Relevant bibliographies by topics / Bathymetric measurements

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Bathymetric measurements'

Author: Grafiati
Published: 3 June 2025
Last updated: 23 June 2025

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Journal articles on the topic "Bathymetric measurements"

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Ochałek, Agnieszka, Tomasz Lipecki, Wojciech Jaśkowski, and Mateusz Jabłoński. "Modeling and Analysis of Integrated Bathymetric and Geodetic Data for Inventory Surveys of Mining Water Reservoirs." E3S Web of Conferences 35 (2018): 04005. http://dx.doi.org/10.1051/e3sconf/20183504005.

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The significant part of the hydrography is bathymetry, which is the empirical part of it. Bathymetry is the study of underwater depth of waterways and reservoirs, and graphic presentation of measured data in form of bathymetric maps, cross-sections and three-dimensional bottom models. The bathymetric measurements are based on using Global Positioning System and devices for hydrographic measurements – an echo sounder and a side sonar scanner. In this research authors focused on introducing the case of obtaining and processing the bathymetrical data, building numerical bottom models of two post-mining reclaimed water reservoirs: Dwudniaki Lake in Wierzchosławice and flooded quarry in Zabierzów. The report includes also analysing data from still operating mining water reservoirs located in Poland to depict how bathymetry can be used in mining industry. The significant issue is an integration of bathymetrical data and geodetic data from tachymetry, terrestrial laser scanning measurements.
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Wang, Yitong, Ziyi Lu, Dihao Ma, and Zixin Yang. "The study of the direction of navigation of ships in a particular sea area." Highlights in Science, Engineering and Technology 82 (January 26, 2024): 77–84. http://dx.doi.org/10.54097/fq9fg659.

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Multibeam bathymetric system is a further development of single-beam bathymetric system, which can send and receive hundreds of beams at the same time during the working process, and carry out full-coverage bathymetric strip measurements in the smooth sea area on the seabed. In this paper, we model the coverage width and the overlap rate to further reduce the errors occurring in the measurement process, and at the same time, we design a scheme for the given data and constraints to solve the practical problems. The process analysis facilitates the practical application of multibeam bathymetry system, improves the problems of failing to achieve the full coverage of the sea area and the high overlap rate, and provides a new idea for the seabed detection of multibeam bathymetry.
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Herrmann, Joan, Lori A. Magruder, Jonathan Markel, and Christopher E. Parrish. "Assessing the Ability to Quantify Bathymetric Change over Time Using Solely Satellite-Based Measurements." Remote Sensing 14, no. 5 (2022): 1232. http://dx.doi.org/10.3390/rs14051232.

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Coastal regions are undergoing rapid change, due to natural and anthropogenic forcings. A current constraint in understanding and modeling these changes is the lack of multi-temporal bathymetric data, or recursive observations. Often, it is difficult to obtain the repeat observations needed to quantify bathymetric change over time or events. However, the recent availability of ICESat-2 bathymetric lidar creates the option to map coastal bathymetry from solely space-based measurements via satellite-derived bathymetry with multispectral imagery (IS-2/SDB). This compositional space-based bathymetric mapping technique can assess temporal change along the coasts without other remote sensing or in situ data. However, questions exist as to the accuracy of the technique relative to both quantitative uncertainties and the ability to resolve the spatial patterns of erosion and deposition in the nearshore environment, indicative of geomorphologic change. This paper addresses the concept using data from the Florida panhandle (Northern Gulf of Mexico) collected by Sentinel-2 and ICESat-2 at two epochs to assess the feasibility of using IS-2/SDB for bathymetric change detection at scientifically relevant scales, spatial resolutions and accuracies. The comparison of the satellite-only result is compared to airborne data collected at similar epochs to reveal both quantitatively and qualitatively the utility of this technique.
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Md. Mahabub Alam and Md Nuruzzaman. "Comparative analysis of interpolation methods commonly used in bathymetric data generation." World Journal of Advanced Research and Reviews 25, no. 3 (2025): 2018–29. https://doi.org/10.30574/wjarr.2025.25.3.0835.

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This research paper aims to provide a comparative analysis of interpolation methods for estimating bathymetric data. Accurate measurement of bathymetry is crucial for a variety of applications, including navigation, oceanography, and coastal management. However, due to the high cost and difficulty of acquiring bathymetric data, gaps in measurements are common. Interpolation methods are widely used to fill these gaps and estimate the depths of water at unsampled locations. In this study, we analyze the most commonly used interpolation methods, including linear, inverse distance weighting, kriging, triangulated irregular network, moving least squares, piecewise cubic Hermite interpolating polynomial, and spline interpolation. We compare and evaluate the performance of these methods using both simulated and real-world datasets. Additionally, we provide a systematic analysis of the strengths and weaknesses of each method in terms of their accuracy in estimating bathymetry. The goal of this paper is to offer a comprehensive overview of interpolation methods for bathymetric data and to assist researchers and practitioners in selecting the most suitable method for a given task and dataset.
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Mukhamedina, A. Ye, D. K. Abiyeva, and K. M. Kulebayev. "Assessment of the potential use of ICESat-2 data for bathymetric mapping of small lakes of Kazakhstan." Geography and water resources, no. 2 (June 30, 2022): 43–49. http://dx.doi.org/10.55764/2957-9856/2022-2-43-49.12.

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Lake bathymetry is of great importance for water resources management and hydrological modeling. Bathymetric mapping of lakes was predominantly conducted with the use of highly-priced methods such as airborne lidars, active imaging sonars, multibeam echosounders. With the advancements in GIS and emergence of remotely sensed data new approaches for bathymetry extraction were developed. However, despite a high motivation to obtain bathymetric information for small lakes from remotely sensed data, there is a lack of reliable methods that can be implemented under various climate conditions and on a wide scale. In this paper several remote-sensing-based methods for bathymetry mapping of small lakes are discussed. The new Ice, Cloud, and land Elevation Satellite-2 (ICESat-2) data was used to extract bathymetric information on three small lakes of Kazakhstan. The assessment of ICESat-2 for lake bathymetry extraction was conducted using field measurements as the validation data.
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Zhu, Siyu, Baojian Liu, Wei Wan, et al. "A New Digital Lake Bathymetry Model Using the Step-Wise Water Recession Method to Generate 3D Lake Bathymetric Maps Based on DEMs." Water 11, no. 6 (2019): 1151. http://dx.doi.org/10.3390/w11061151.

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The availability of lake bathymetry maps is imperative for estimating lake water volumes and their variability, which is a sensitive indicator of climate. It is difficult, if not impossible, to obtain bathymetric measurements from all of the thousands of lakes across the globe due to costly labor and/or harsh topographic regions. In this study, we develop a new digital lake bathymetry model (DLBM) using the step-wise water recession method (WRM) to generate 3-dimensional lake bathymetric maps based on the digital elevation model (DEM) alone, with two assumptions: (1) typically, the lake’s bathymetry is formed and shaped by geological processes similar to those that shaped the surrounding landmasses, and (2) the agent rate of water (the thickness of the sedimentary deposit proportional to the lake water depth) is uniform. Lake Ontario and Lake Namco are used as examples to demonstrate the development, calibration, and refinement of the model. Compared to some other methods, the estimated 3D bathymetric maps using the proposed DLBM could overcome the discontinuity problem to adopt the complex topography of lake boundaries. This study provides a mathematically robust yet cost-effective approach for estimating lake volumes and their changes in regions lacking field measurements of bathymetry, for example, the remote Tibetan Plateau, which contains thousands of lakes.
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Bures, Ludek, Petra Sychova, Petr Maca, Radek Roub, and Stepan Marval. "River Bathymetry Model Based on Floodplain Topography." Water 11, no. 6 (2019): 1287. http://dx.doi.org/10.3390/w11061287.

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An appropriate digital elevation model (DEM) is required for purposes of hydrodynamic modelling of floods. Such a DEM describes a river’s bathymetry (bed topography) as well as its surrounding area. Extensive measurements for creating accurate bathymetry are time-consuming and expensive. Mathematical modelling can provide an alternative way for representing river bathymetry. This study explores new possibilities in mathematical depiction of river bathymetry. A new bathymetric model (Bathy-supp) is proposed, and the model’s ability to represent actual bathymetry is assessed. Three statistical methods for the determination of model parameters were evaluated. The best results were achieved by the random forest (RF) method. A two-dimensional (2D) hydrodynamic model was used to evaluate the influence of the Bathy-supp model on the hydrodynamic modelling results. Also presented is a comparison of the proposed model with another state-of-the-art bathymetric model. The study was carried out on a reach of the Otava River in the Czech Republic. The results show that the proposed model’s ability to represent river bathymetry exceeds that of his current competitor. Use of the bathymetric model may have a significant impact on improving the hydrodynamic model results.
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Palaseanu-Lovejoy, Monica, Oleg Alexandrov, Jeff Danielson, and Curt Storlazzi. "SaTSeaD: Satellite Triangulated Sea Depth Open-Source Bathymetry Module for NASA Ames Stereo Pipeline." Remote Sensing 15, no. 16 (2023): 3950. http://dx.doi.org/10.3390/rs15163950.

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We developed the first-ever bathymetric module for the NASA Ames Stereo Pipeline (ASP) open-source topographic software called Satellite Triangulated Sea Depth, or SaTSeaD, to derive nearshore bathymetry from stereo imagery. Correct bathymetry measurements depend on water surface elevation, and whereas previous methods considered the water surface horizontal, our bathymetric module accounts for the curvature of the Earth in the imagery. The process is semiautomatic, reliable, and repeatable, independent of any external bathymetry data eliminating user bias in selecting bathymetry calibration points, and it can generate a fully integrated and seamless topo-bathymetry digital elevation model (TBDEM) in the same coordinate system, comparable with the band-ratio method irrespective of the regression method used for the band-ratio algorithm. The ASP output can be improved by applying a camera bundle adjustment to minimize reprojection errors and by alignment to a more accurate topographic (above water) surface without any bathymetric input since the derived TBDEM is a rigid surface. These procedures can decrease bathymetry root mean square errors from 30 to 80 percent, depending on environmental conditions, the quality of satellite imagery, and the spectral band used (e.g., blue, green, or panchromatic).
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Yang, Jian, Yue Ma, Huiying Zheng, Yuanfei Gu, Hui Zhou, and Song Li. "Analysis and Correction of Water Forward-Scattering-Induced Bathymetric Bias for Spaceborne Photon-Counting Lidar." Remote Sensing 15, no. 4 (2023): 931. http://dx.doi.org/10.3390/rs15040931.

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The new spaceborne photon-counting lidar, i.e., ICESat-2, has shown great advantages in obtaining nearshore bathymetry at a global scale. The forward-scattering effect in the water column is one of the main error sources in airborne lidar bathymetry (ALB). However, the magnitude of the bathymetric bias for spaceborne lidars and how can we effectively correct this bias have not been evaluated and are very worthy of investigation. In this study, the forward-scattering effect on spaceborne photon-counting lidar bathymetry is quantitatively modeled and analyzed based on the semi-analytic Monte Carlo simulation method. Meanwhile, an empirical formula for correcting forward-scattering-induced bathymetric bias specific to ICESat-2 is derived. When the water depth exceeds 20 m, this bias cannot be neglected for ICESat-2 even in clear open ocean waters. In two study areas with local in situ measurements (St. Thomas and Hawaii), the bathymetric bias of ICESat-2 in deep waters (>20 m) is corrected from exceeding 50 cm to less than 13 cm using the proposed empirical formula. This study is valuable to evaluate and correct the forward-scattering-induced bias for the existing ICESat-2 and is also fundamental to optimizing the hardware parameters of a possible future photon-counting bathymetric lidar.
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Specht, Cezary, Emilian Świtalski, and Mariusz Specht. "Application of an Autonomous/Unmanned Survey Vessel (ASV/USV) in Bathymetric Measurements." Polish Maritime Research 24, no. 3 (2017): 36–44. http://dx.doi.org/10.1515/pomr-2017-0088.

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AbstractThe accuracy of bathymetric maps, especially in the coastal zone, is very important from the point of view of safety of navigation and transport. Due to the continuous change in shape of the seabed, these maps are fast becoming outdated for precise navigation. Therefore, it is necessary to perform periodical bathymetric measurements to keep them updated on a current basis. At present, none of the institutions in Poland (maritime offices, Hydrographic Office of the Polish Navy) which are responsible for implementation of this type of measurements has at their disposal a hydrographic vessel capable of carrying out measurements for shallow waters (at depths below 1 m). This results in emergence of large areas for which no measurement data have been obtained and, consequently, the maps in the coastal zones are rather unreliable.The article presents the concept of bathymetric measurements for shallow waters with the use of an autonomous, unmanned survey vessel (ASV/USV). For this purpose, the authors modernized a typical ASV/USV unit with standard radio remote control system to the fully autonomous mode. As part of the modernization, the route planning software was created. The developed software works based on, alternatively, GNSS measurements of the coastline, or satellite images. The system was supplemented by an own autopilot (adapted for flying drones). Moreover, the method of controlling electric motors was changed thanks to the use of own electronic circuit.The modernized ASV/USV measuring system was verified by performing bathymetric measurements of the retention reservoir in Gdansk, Poland. Then, the obtained measurement data were used to create a digital bottom model and a bathymetric map of the reservoir.
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Dissertations / Theses on the topic "Bathymetric measurements"

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Liedtke, Eric Arthur. "Effects from uncertainties in bathymetric measurements and variability in topography on computed stability of offshore slopes in deep water /." Full text (PDF) from UMI/Dissertation Abstracts International, 2001. http://wwwlib.umi.com/cr/utexas/fullcit?p3008380.

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Carmody, James Daniel Physical Environmental &amp Mathematical Sciences Australian Defence Force Academy UNSW. "Deriving bathymetry from multispectral and hyperspectral imagery." Awarded by:University of New South Wales - Australian Defence Force Academy. School of Physical, Environmental and Mathematical Sciences, 2007. http://handle.unsw.edu.au/1959.4/38654.

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Knowledge of water depth is a crucial for planning military amphibious operations. Bathymetry from remote sensing with multispectral or hyperspectral imagery provides an opportunity to acquire water depth data faster than traditional hydrographic survey methods without the need to deploy a hydrographic survey vessel. It also provides a means of collecting bathymetric data covertly. This research explores two techniques for deriving bathymetry and assesses them for use by those involved in providing support to military operations. To support this aim a fieldwork campaign was undertaken in May, 2000, in northern Queensland. The fieldwork collected various inherent and apparent water optical properties and was concurrent with airborne hyperspectral imagery collection, space-based multispectral imagery collection and a hydrographic survey. The water optical properties were used to characterise the water and to understand how they affect deriving bathymetry from imagery. The hydrographic data was used to assess the performance of the bathymetric techniques. Two methods for deriving bathymetry were trialled. One uses a ratio of subsurface irradiance reflectance at two wavelengths and then tunes the result with known water depths. The other inverts the radiative transfer equation utilising the optical properties of the water to derive water depth. Both techniques derived water depth down to approximately six to seven metres. At that point the Cowley Beach waters became optically deep. Sensitivity analysis of the inversion method found that it was most sensitive to errors in vertical attenuation Kd and to errors in transforming the imagery into subsurface irradiance reflectance, R(0-) units. Both techniques require a priori knowledge to derive depth and a more sophisticated approach would be required to determine water depth without prior knowledge of the area of interest. This research demonstrates that water depth can be accurately mapped with optical techniques in less than ideal optical conditions. It also demonstrates that the collection of inherent and apparent optical properties is important for validating remotely sensed imagery.
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Sproule, David Surveying &amp Spatial Information Systems Faculty of Engineering UNSW. "Prediction of offshore gravity from bathymetry." Awarded by:University of New South Wales. School of Surveying and Spatial Information Systems, 2005. http://handle.unsw.edu.au/1959.4/22481.

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The definition of the shape of the geoid is a fundamental objective of geodesy, since it allows for the conversion between orthometric and ellipsoidal height systems. The geoid can be computed from gravity values measured over the surface of the earth, and considerable effort continues to achieve a global coverage of gravity values. One technique that has been very successful in recent years in providing gravity coverage in areas which previously have been too difficult to access is airborne gravimetry. This technique has proved very useful in covering near offshore regions, for example. The coastal regions of Australia are recognised as locations where airborne gravimetry has the potential to fill in missing gravity data. A pilot survey using an airborne gravity meter was undertaken off the north east coast of Australia. In areas that remain unsurveyed it is sometimes useful to fill in the missing gravity data values with predicted gravity values. Previous research has examined the possibility of predicting gravity values from other observed quantities. The best success has been achieved by using the gravity effect calculated from bathymetric information. Often the corresponding isostatic compensation is computed, and the combined bathymetric-isostatic gravity effect is used. However, the type and extent of compensation that exists in any particular region mostly remains unknown. Theoretical considerations indicate that the short wavelength part of the gravity field may be adequately modelled by the gravity effect of the bathymetry alone, without reference to an assumed compensation mechanism. With this in mind, a prediction scheme has been developed which utilises the short wavelength gravity field information implied by the bathymetry, combined with the long wavelength gravity field information from existing observed gravity. This scheme allows the prediction of ???fill-in??? gravity values in areas with limited observed gravity. The prediction technique was used on a test set of data off the east coast of Greenland. The prediction technique was seen to outperform a simple interpolation of gravity values by approximately ten percent. Geoid computations performed with the predicted gravity values indicate that the prediction technique can provide significant improvements in computed geoids.
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Hell, Benjamin. "Mapping bathymetry : From measurement to applications." Doctoral thesis, Stockholms universitet, Institutionen för geologiska vetenskaper, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-57291.

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Surface elevation is likely the most fundamental property of our planet. In contrast to land topography, bathymetry, its underwater equivalent, remains uncertain in many parts of the World ocean. Bathymetry is relevant for a wide range of research topics and for a variety of societal needs. Examples, where knowing the exact water depth or the morphology of the seafloor is vital include marine geology, physical oceanography, the propagation of tsunamis and documenting marine habitats. Decisions made at administrative level based on bathymetric data include safety of maritime navigation, spatial planning along the coast, environmental protection and the exploration of the marine resources. This thesis covers different aspects of ocean mapping from the collection of echo sounding data to the application of Digital Bathymetric Models (DBMs) in Quaternary marine geology and physical oceanography. Methods related to DBM compilation are developed, namely a flexible handling and storage solution for heterogeneous sounding data and a method for the interpolation of such data onto a regular lattice. The use of bathymetric data is analyzed in detail for the Baltic Sea. With the wide range of applications found, the needs of the users are varying. However, most applications would benefit from better depth data than what is presently available. Based on glaciogenic landforms found in the Arctic Ocean seafloor morphology, a possible scenario for Quaternary Arctic Ocean glaciation is developed. Our findings suggest large ice shelves around parts of the Arctic Ocean during Marine Isotope Stage 6, 130–200 ka. Steered by bathymetry, deep water from the Amerasian Basin of the Arctic Ocean flows over the central Lomonosov Ridge into the Eurasian Basin. This water mass is traced on its continuing way towards Greenland and the Fram Strait. At the Morris Jesup Rise, bathymetry plays an important role in the partial re-circulation of the water into the Amerasian Basin.<br><p>At the time of the doctoral defense, the following papers were unpublished and had a status as follows: Paper 2: Manuscript. Paper 3: Submitted.</p>
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Cossio, Tristan. "Prediction of topographic and bathymetric measurement performance of airborne low-SNR lidar systems." [Gainesville, Fla.] : University of Florida, 2009. http://purl.fcla.edu/fcla/etd/UFE0024246.

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Johnson, Charley R. "Migration of Dredged Material Mounds: Predictions Based on Field Measurements of Waves, Currents, and Suspended Sediments, Brunswick, GA." Thesis, Available online, Georgia Institute of Technology, 2005, 2005. http://etd.gatech.edu/theses/available/etd-04082005-145658/unrestricted/johnson%5Fcharley%5Fr%5F200505%5Fmast.pdf.

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Thesis (M. S.)--Civil and Environmental Engineering, Georgia Institute of Technology, 2005.<br>F. Michael Saunders, Ph.D., Committee Member ; Kevin Haas, Ph.D., Committee Member ; Paul A. Work, Ph.D., Committee Chair. Includes bibliographical references.
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Kuo, Xuan-Chi, and 郭軒圻. "Bathymetry Measurement Using Modified Sounding weigh." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/6g8j32.

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碩士<br>國立臺北科技大學<br>土木工程系土木與防災碩士班<br>105<br>In hydrographic analysis, the data of water depth during rainstorms is a very important parameter. In the past, people used sounding weight to measure water depth; however, this conventional method is time consuming, labor density and high risk, also the rapid river caused the sounding weight cannot sink vertically, directly to the bottom of the water, that it can’t measure the correct water depth. In the report of All flood process automated depth Observing System Planning mechanical systems, the 4th river management office adopted mechanical drop modified sounding weight to improve shortcomings, shortage of manpower and dangerous, and the modified sounding weight overcomes the problem that the sounding weight can’t sink quickly. In this study,three-dimensional computational fluid hydrodynamics software,FIUENT,is adopted to simulate and analysis flow field.The model applies the finite volume discrete control equation and the SIMPLE method coupled velocity and pressure to satisfy the mass conservation and momentum conservation.The first simulation present flow field,distance and force taken difference between the modified sounding weight sink into water in free fall and the convetional sounding weight sink into water in constant speed.The second simulation present time difference between modified sounding weight sink into water and convetional sounding weight sink into water in free fall.From the above simulation,the modified sounding weight can effectively improve the convetional sounding weight shortcomings.Finally,using the new instrument and convetional sounding weight measurement results as verification data in the report of All flood process automated depth Observing System Planning and building.The result prove the new instrument measurement can be used.
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C��t��, Jessica Magee. "The measurement of nearshore bathymetry on intermediate and dissipative beaches." Thesis, 1999. http://hdl.handle.net/1957/33658.

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In 1996, Beach et al. first proposed the idea of mounting an echo-sounder on a Waverunner to measure nearshore beach profiles. This thesis discusses the Coastal Profiling System, an extension of the original work, which has been utilized to measure nearshore bathymetry at selected sites along the coasts of North Carolina, Oregon, and Washington. Position of the Coastal Profiling System is accurately measured five times per second using a differential global positioning system (DGPS), while depth below the hull is measured by an acoustic echo-sounder. Surveys can be conducted in waves up to 3 m and in depths of 1-15 m. The effects of waves, tides, and set-up are eliminated by the co-collection of position and depth data. In October 1997, extensive testing of the system took place at the SandyDuck '97 field experiment in Duck, NC. Nearshore bathymetric surveys were taken simultaneously by the Coastal Research Amphibious Buggy (CRAB) and the Coastal Profiling System (CPS). Comparison of the CPS with CRAB measurements interpolated to the same locations showed a mean bias of 4.6 cm too shallow in the vertical and standard deviations about the bias of 5.5 cm. The largest differences occur over the steeply sloping flanks of sand bars. The bias statistic, of central interest to these tests, is confused by the potential of boat tilt and by possible errors in the CRAB data itself. In July & August 1998, the system was tested as a tool for long-term coastal monitoring by the Southwest Washington Coastal Erosion Study in a regional morphology monitoring program (Ruggiero et al., 1997). A 2-3 km section in approximately the center of each of the four sub-cells of the Columbia River littoral cell, and an anomalous fifth site, was surveyed to map the morphology of each region. Alongshore-averaged profiles were decomposed into underlying AX[superscript m] profiles and deviations from this equilibrium profile. The mean of the exponents was close to 2/3 with m=0.70, but ranged between sites from 0.56 to 0.79. Shape parameters between 0.027 and 0.038 were estimated. Nearshore slopes (0-1 km cross-shore) were calculated from the exponential profile in the dissipative range with a minimum of 0.0067 and a maximum of 0.0089. However, no correlation was seen between the shape parameters and the 1 km nearshore slopes. An analysis of the deviations of the alongshore-averaged profiles from the equilibrium profile provided an objective method to determine sand bar positions from zero-down-crossings. Each site was characterized by a minimum of two sand bars in 2-6.5 m (NAVD 88) depths with heights of 0.2-2 m, lengths of 164-949 m and volumes of 48-534 m��/m. An additional bar in the swash zone between the +1 m elevation and 1 m depth contour was resolved in some cross-shore profiles. The crest of the bar largest in height was located at 3-4.5 NAVD 88 m at four of the five sites suggesting the profiles vary on similar cross-shore length scales amongst the sub-cells. A series of surveys in April, June, and October 1998 at the northern most site in Ocean City, WA demonstrated onshore bar migration and seaward accretion of the foreshore. This seasonal response was further quantified between August and October at Fort Canby. Three nearshore profiles surveyed by Willard Bascom et al. (1954) in the 1940s were reoccupied to compare the shape of the morphology 50 years ago to present. These profiles demonstrate accretion of approximately 2 m elevation gains in the nearshore and 26-165 m of shoreline change. Although the Coastal Profiling System is a highly accurate, mobile and efficient method to obtain nearshore profiles, several improvements have been suggested. Future modifications to the system should include an increase in the precision of the echo-sounder measurements, higher sampling rates, and improvement of the user interface. Additional components may include an onboard navigation system, a thermister to measure temperature and salinity, and a motion sensor to measure roll and pitch of the vehicle.<br>Graduation date: 1999
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蕭國寬. "The Study of Bathymetrical Resolution and Accuracy by Single-beam Echo-sounding Measurement." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/11342688111333808118.

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Stockdon, Hilary F. "Estimation of wave phase speed and nearshore bathymetry using video techniques." Thesis, 1997. http://hdl.handle.net/1957/28100.

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Books on the topic "Bathymetric measurements"

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Krimmel, Robert M. Photogrammetric data set, 1957-2000, and bathymetric measurements for Columbia Glacier, Alaska. U.S. Geological Survey, 2001.

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M, Krimmel Robert. Photogrammetric data set, 1957-2000, and bathymetric measurements for Columbia Glacier, Alaska. U.S. Geological Survey, 2001.

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Coast Survey Development Laboratory (U.S.), ed. Tidal Constituent And Residual Interpolation (TCARI): A new method for the tidal correction of bathymetric data. 2nd ed. U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Ocean Service, Office of Coast Survey, Coast Survey Development Laboratory, 2004.

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Brazil/U.S. Workshop on Physical Oceanography (1987 Ocean Process Analysis Laboratory). Brazil/U.S. Workshop on Physical Oceanography Held on 3-6 August 1987. Ocean Process Analysis Laboratory, Institute for the Study of Earth, Oceans and Space, University of New Hampshire, 1987.

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Photogrammetric Data Set, 1957-2000, and Bathymetric Measurements for Columbia Glacier, Alaska, U.S. Geological Survey, Water-Resources Investigations Report 01-4089, (CD-ROM). s.n., 2001.

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Côté, Jessica Magee. The measurement of nearshore bathymetry on intermediate and dissipative beaches. 1999.

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Stockdon, Hilary F. Estimation of wave phase speed and nearshore bathymetry using video techniques. 1997.

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Book chapters on the topic "Bathymetric measurements"

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Nakagawa, Yasuyuki, Taichi Kosako, Hiroyuki Hayashi, and Tomohiro Watanabe. "Sedimentary Process in Navigation Channel in an Estuarine Port, - A Case Study from the Port of Niigata, Japan." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-6138-0_114.

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AbstractThe present study focused on the siltation process at the navigation channel in the Port of Niigata, Japan. A part of the port is located at the mouth of the Shinano River, which is the longest one in the country. Due to the discharged sediments through the river and their deposition in the port area, frequent dredging works are required for the safety navigations in the waterway and turning basins. The purpose of the present study is to get a better understanding of the specific features of the sedimentary process in the target area for the consideration of any appropriate countermeasures for the optimization of the dredging works. In the present study, we especially focus on the sedimentation processes around the dredged navigation channel, which need frequent dredging to keep the planned depth from −5.5 to −12 m, under the complicated estuarine hydraulic conditions and several field measurements have been carried out, including current measurements, bathymetric surveys by acoustic soundings with a narrow multibeam sonar system.
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Karadöller, Beril, Caner İmren, and Zeynep Koçel-Erdem. "The Exploration of the Coasts of Perinthos: What Does the Multibeam Bathymetry Survey Tell us?" In Monitoring of Mediterranean Coastal Areas: Problems and Measurement Techniques. Firenze University Press, 2024. https://doi.org/10.36253/979-12-215-0556-6.54.

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The ancient city of Perinthos (Marmaraereglisi/Tekirdag/Istanbul), where researched with a systematic multidisciplinary archaeological project were initiated by the Ministry of Culture and Tourism in 2021, has the potential to accommodate both marine and land-based multidiscipline studies in a comprehensive approach. To investigate the traces of archaeological remains, an integrated geophysical survey was designed. As part of the project, a comprehensive multi-beam bathymetry study was carried out in the city's offshore zones, while geophysical studies were carried out on land. The bathymetry study aims to model and investigate the detailed seafloor morphology of the coast of the Perinthos. The seafloor morphology modelled using high-precision data gave us a unique opportunity to investigate the mysteries of the ancient city of Perinthos. Multi-beam bathymetry data in over 1000 hectare acquired with 400 and 700 kHz central frequency sensors. Throughout the data processing procedure, the ¨International Hydrographic Organization Standards for Hydrographic Survey¨ were adhered to. Finally, morphological imagery of the seafloor was obtained. The resolution of these images, varies between 10 cm and 1 meter depending on the depth. This study is a significant contribution to the high-resolution identification of ancient cultural heritage through the multi-beam bathymetry in marine archaeological sites.
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Julianto, Jimmy, and Alpian Nur. "Analysis and Bathymetric Measurement of Benanga Dam in Lempake, Samarinda City." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2025. https://doi.org/10.1007/978-981-96-5654-7_82.

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Hessner, K. G., J. C. Nieto-Borge, and P. S. Bell. "Nautical Radar Measurements in Europe: Applications of WaMos II as a Sensor for Sea State, Current and Bathymetry." In Remote Sensing of the European Seas. Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-6772-3_33.

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Duffy, Garret P., and John E. Hughes Clarke. "Measurement of Bedload Transport in a Coastal Sea Using Repeat Swath Bathymetry Surveys: Assessing Bedload Formulae Using Sand Dune Migration." In Sediments, Morphology and Sedimentary Processes on Continental Shelves. John Wiley & Sons, Ltd, 2013. http://dx.doi.org/10.1002/9781118311172.ch12.

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Jing, Ye, Xueting Lei, Jie Qin, Teng Wu, and Elikplim Agbemafle. "On Characterizing Flow Resistance in a Tidal Reach." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-6138-0_134.

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AbstractThe tidal reaches are characterized by unsteady and non-uniform flow (UNF), which is significantly different from the commonly assumed steady and uniform flow (SUF) in hydraulics. The SUF shows invariant temporal and spatial flow characteristics, and thus flow acceleration is absent in a prismatic channel. However, for the UNF, the variation of flow velocity and depth in both temporal and spatial scales causes the loss of flow energy, and thus increases the flow resistance. In order to clarify the variation of flow resistance and its influencing factors in tidal reaches, this study investigates the flow resistance characteristics under UNF conditions. In this study, a typical tidal section of the Lower Yangtze River (LYR) – Kouanzhi Waterway (KW) – was selected as the study area, where the temporal variation of water surface along the river course at different tide levels, the bathymetry of multiple cross-sections, the distribution of cross-sectional flow velocity and its temporal variation were measured in detail. Based on these field measurement data, the contribution terms to the energy slope were calculated and evaluated, by decomposing the momentum equation. The calculated contributing terms include water surface gradient, local acceleration, and convective acceleration. The results showed that the local acceleration and convective acceleration have a substantial impact on the energy slope during specific time periods, which was found to be more significant than the findings in previous studies. The results show that the local acceleration term is more significant than the convective acceleration term except when the water surface slope is close to zero, and its contribution is significant throughout the flood tide and the initial ebb tide periods. The above research results are of great significance for the investigation of flow resistance mechanisms and numerical simulations in tidal rivers.
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Hallström, Elisabet Anne Marie, Ole B. Andersen, Xiaoli Deng, and Richard Coleman. "Bathymetry Estimation from ICESat-2 in a Region Swamped by Mud: A Case Story from Moreton Bay." In International Association of Geodesy Symposia. Springer Berlin Heidelberg, 2024. http://dx.doi.org/10.1007/1345_2024_274.

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AbstractThe bathymetry of coastal bay environments, such as Moreton Bay near Brisbane in eastern Australia, is constantly reworked because of changes in energy dispersal and related sediment transport pathways. Updated and accurate bathymetric models are a crucial component for scientific, environmental, and ship safety studies.NASA’s Ice, Cloud, and Land Elevation Satellite-2 (ICESat-2) is equipped with a laser detecting system (green light) that penetrates the air-water interface. Under optimal conditions, it can provide shallow water bathymetry (depths &lt;40 m). We attempted to use ICESat-2 measurements to study bathymetry and possible bathymetry changes from repeated tracks across Moreton Bay. We found that the water turbidity in Moreton Bay varies with time. More than half of the water area is affected by suspended sediment, which makes ICESat-2 difficult to obtain bathymetric measurements. In other areas, repeated ICESat-2 tracks performed consistently on the 1-meter level. This means that ICESat-2 can be used to update existing bathymetry in the region. We also devised a method to determine bathymetry in the shallower parts of the zone affected by mud.
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Monahan, David. "Interpretation of Bathymetry." In Continental Shelf Limits. Oxford University Press, 2000. http://dx.doi.org/10.1093/oso/9780195117820.003.0016.

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The two previous chapters described how depth measurements are made and elaborated on the accuracy and strengths of each type of data. Clearly, it would be wonderful if the entire world ocean were covered with multibeam data, but at the present time, there is only limited coverage; only a few ships are equipped with multibeam, and their speed remains slow. Therefore, we must use the other, older types of data available to us. States wishing to prepare a claim under the Convention may be able to follow up interpretations of older data with multibeam surveys aimed at the most important targets identified from analyzing the earlier data. This chapter is aimed at those wishing to produce new bathymetric maps by converting various types of data into information about the shape of the seafloor. The chapter discusses maps, in particular the elements of maps and mapping that apply to bathymetry. It explains the differences between navigation charts and bathymetry maps and describes how to prepare a bathymetry map. A great deal of the evidence assembled for any claim under the Convention will be portrayed on maps. Although maps are part of most people's life experience and are included in the training of hydrographers and earth scientists, it is a good idea to review some of the fundamentals of maps and mapping to ensure that those viewing the maps are aware of the limitations and strengths of this particular medium. Bathymetric maps and navigation charts—indeed, all maps—are caricatures. A chart distorts reality, just as the cartoonist distorts the facial features of some well-known personality. Yet the intent is always clear: The viewer knows who or what is being portrayed despite or perhaps because of the distortion. But to do this well calls for a careful distortion of just the right features. A good caricature has an uncanny precision behind the distortion; so it is with a chart. Put more scientifically, a map or chart comprises a summation of a large number of measurements carefully filtered and designed to give its main user an unambiguous image of the situation it portrays. This section describes the design process and the filters applied.
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Clarke, John Hughes. "Present-Day Methods of Depth Measurement." In Continental Shelf Limits. Oxford University Press, 2000. http://dx.doi.org/10.1093/oso/9780195117820.003.0015.

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Bathymetric data are needed to derive the morphological criteria that define the extent of the juridical continental shelf. Two features in particular, the '"foot of slope" and the 2500-m contour, must be defined. The previous chapter considered historical methods of determining bathymetry. This chapter will cover the present day methods that can be used to better meet the need for accurate bathymetry. In order to satisfy the demands of UNCLOS, bathymetric data are required in depths ranging from about 200 m to more than 5000 m. Shallower depths, while useful for demonstrating the morphology of the physical continental shelf, do not bear any relevance to the delineation of juridical continental shelf boundaries, other than where they are required to establish the baseline. Alternate methods to derive bathymetry other than using sound are available. Those involving airborne electromagnetic methods (e.g., electromagnetic induction, red-green lasers, and inversion of sea surface radar images) are not capable of determining depths much in excess of 40 m. The only other method potentially useful for deriving deeper water bathymetry is through inversion of sea surface altimetry obtained from satellites. This will be discussed at the end of this chapter. The optimal method thus remains acoustic. The traditional approach has been to use single-beam echo sounders (see previous chapter). This chapter discusses the more modern '"swath" sonar techniques, which are becoming widely used. The great majority of historic bathymetry has been collected using the single-beam sounding approach. As discussed in chapter 9, this method has a number of limitations, three of the most critical of which are i. incomplete coverage; ii. uncertainty about the exact location of the first arrival of the acoustic pulse; and iii. distortion of short-wavelength topography. In order to achieve more complete coverage, better echo location, and higher spatial resolution, methods were devised to project acoustic energy both within narrower solid angles (figure 10.1) and while deriving this information over angular sectors extending further out from the side of the survey vessel. All the methods commonly applied involved scanning the seabed orthogonal to the ship heading. Sequential scans, accumulated as the ship progresses, form a corridor (or swath) of seabed information (figure 10.2).
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"Benthic Habitats and the Effects of Fishing." In Benthic Habitats and the Effects of Fishing, edited by T. D. Clayton, J. C. Brock, and C. W. Wright. American Fisheries Society, 2005. http://dx.doi.org/10.47886/9781888569605.ch21.

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For ecologists and managers of seagrass systems, the spatial context provided by remote sensing has proven to be an important complement to in situ assessments and measurements. The spatial extent of seagrass beds has been mapped most commonly with conventional aerial photography. Additional remote mapping and monitoring tools applied to seagrass studies include optical satellite sensors, airborne multispectral scanners, underwater video cameras, and towed sonar systems. An additional tool that shows much promise is airborne, waveform-resolving lidar (light detection and ranging). Now used routinely for high-resolution bathymetric and topographic surveys, lidar systems operate by emitting a laser pulse, then measuring its two-way travel time from the plane to reflecting surface(s) below, then back to the detector co-located with the laser transmitter. Using a novel, waveformresolving lidar system developed at NASA — the Experimental Advanced Airborne Research Lidar (EAARL) — we are investigating the possibility of using the additional information contained in the returned laser pulse (waveform) for the purposes of benthic habitat mapping. Preliminary analyses indicate that seagrass beds can potentially be delineated on the basis of apparent bathymetry, returned waveform shape and amplitude, and (horizontal) spatial texture. A complete set of georectified digital camera imagery is also collected during each EAARL overflight and can aid in mapping efforts. Illustrative examples are shown from seagrass beds in the turbid waters of Tampa Bay and the relatively clear waters of the Florida Keys.
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Conference papers on the topic "Bathymetric measurements"

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Kallenback, Brandon M., Steve L. Shea, Jintai Li, Joseph A. Shaw, and Michael R. Roddewig. "Processing dual-polarization lidar data with the wavelet transform for bathymetric measurements." In Laser Radar Technology and Applications XXX, edited by Monte D. Turner, Gary W. Kamerman, and Lori A. Magruder. SPIE, 2025. https://doi.org/10.1117/12.3057584.

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Bekova, Radoslava, and Bogdan Prodanov. "SPATIO-TEMPORAL ANALYSIS OF EUTROPHICATION AND HABITAT LOSS IN COAS3TAL LAKES: A CASE STUDY FROM THE KAMCHIYA-SHKORPILOVTSI SECTOR, BULGARIAN BLACK SEA COAST." In 24th SGEM International Multidisciplinary Scientific GeoConference 2024. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024/5.1/s20.32.

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The study presents the first comprehensive spatio-temporal analysis of eutrophication and the consequent loss of sensitive aquatic habitats in the transitional water bodies along the Kamchiya-Shkorpilovtsi sector of the Bulgarian Black Sea coast. The research focuses on the Maznia Azmak Lake, an old Kamchiya riverbed integral to the Kamchia Nature Reserve and two Natura 2000 protected areas. The primary objective was to assess the scale and rate of eutrophication and its impact on aquatic habitats, employing modern methodologies such as drone surveys, high-precision GPS geodetic measurements, and bathymetric investigations. Data was gathered from 2019 to 2023, including key physicochemical parameters (pH, dissolved oxygen, conductivity, temperature, chemical oxygen demand (COD), biological oxygen demand (BOD), total nitrogen, and phosphorus). Results indicate that Maznia Azmak Lake exhibited stable pH levels (7.8-8.3) and increasing conductivity (up to 964 ?S/cm), with dissolved oxygen levels varying significantly (4.8-9.3 mg/l). The lake's COD and BOD values suggested moderate organic pollution, with nutrient levels remaining low. Seasonal salinity variations were observed, correlating with low summer water levels and sea wave activity. The macrophyte analysis revealed a heterogeneous mix of species with minimal helophyte dominance. Popovo Blato Lake demonstrated low dissolved oxygen levels and high conductivity (peaking at 992 ?S/cm), with COD reaching 40.6 ml O2/l in September 2023, indicating severe organic pollution. Conversely, Petrovo Blato Lake had variable dissolved oxygen and high conductivity, with low nutrient levels, though occasional COD and BOD peaks suggested episodic pollution events. The mouth of the Fandakliyska River, showing stable pH and conductivity, had relatively higher dissolved oxygen levels, pointing to better overall water quality compared to the lakes. This area's episodic pollution events were reflected in variable COD and BOD values. The results underscore the critical need for ongoing monitoring and targeted interventions to mitigate pollution and preserve these vulnerable aquatic habitats. This pioneering study contributes valuable baseline data and insights into the eutrophication processes affecting the Bulgarian Black Sea coast, emphasizing the importance of preserving these ecosystems for their biodiversity and ecological services.
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He, Liang, gao shang, and Kai Guo. "The application and effectiveness evaluation of tilt optimization in multibeam measurement systems for extremely shallow water bathymetric surveys." In Sixth International Conference on Geoscience and Remote Sensing Mapping (GRSM 2024), edited by Zhiliang Qin, Jun Chen, and Huaichun Wu. SPIE, 2025. https://doi.org/10.1117/12.3057655.

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Clark, R. K., Temple H. Fay, H. V. Miller, and Charles L. Walker. "Thematic mapper band selection for bathymetric measurements." In Orlando '90, 16-20 April, edited by Richard W. Spinrad. SPIE, 1990. http://dx.doi.org/10.1117/12.21477.

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Supekar, Neha, Madhavi Dewalkar, Ashwini Deshpande, and Sriram Peddada. "Satellite Derived Bathymetry in Hard-To-Reach Areas: Leveraging ICESat-2 and Sentinel-2 with ML and DL Techniques." In SPE Conference at Oman Petroleum & Energy Show. SPE, 2025. https://doi.org/10.2118/225205-ms.

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Abstract Satellite-Derived Bathymetry (SDB) is crucial for mapping underwater topography in regions where traditional bathymetric surveys are challenging due to logistical, environmental, or financial constraints. It provides a cost-effective and scalable solution for monitoring coastal and shallow water environments, supporting applications in marine navigation, coastal management, and environmental conservation. By leveraging remote sensing, SDB enables frequent and wide-area depth estimation without the need for direct in-situ measurements. This paper presents a novel approach that integrates Sentinel-2 multispectral imagery with ICESat-2 photon lidar data, utilizing Machine Learning (ML) and Deep Learning (DL) models to estimate water depths in regions where in-situ measurements are impractical. Our methodology enhances depth estimation accuracy and provides a scalable alternative to conventional techniques. The approach involves processing ICESat-2 photon data to separate signal photons from noise, apply bathymetric corrections, and accurately distinguish sea surface and seafloor photons. Simultaneously, cloud-free Sentinel-2 imagery is preprocessed with sunglint correction before being aligned with ICESat-2-derived depths. These fused datasets train ML and DL models—including Random Forest (RF), Support Vector Machine (SVM), Convolutional Neural Networks (CNN), and ResNet—to predict bathymetry with improved precision. Comparative analysis of ML and DL techniques showed that Sentinel-2 bands 2, 3, 4, and 8 (10 m resolution) were optimal for bathymetric studies. RF and SVM captured non-linear relationships between surface reflectance and depth effectively, giving RMSE values as 1.20 and 1.32 respectively. CNN and ResNet outperformed traditional ML models by leveraging spatial pattern recognition achieving RMSE values 1.18 and 0.81Thus, the quantitative analysis based on the performance metrics (RMSE, MAE, R²) proved CNN and ResNet as the most accurate for depth estimation. The proposed approach provides a scalable, cost-effective method for bathymetric mapping in remote areas, especially in hard-to-reach areas, benefiting marine surveyors, construction industries, and environmental scientists.
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Radhakrishnan Pillai, S., and Hyun Seok Oh. "A new estimation technique for near-shore bathymetric measurements." In 1999 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings. ICASSP99 (Cat. No.99CH36258). IEEE, 1999. http://dx.doi.org/10.1109/icassp.1999.761345.

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Rzhanov, Y., G. R. Cutter, and L. A. Mayer. "Seafloor segmentation based on bathymetric measurements from multibeam echosounder data." In Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings. IEEE, 2003. http://dx.doi.org/10.1109/isspa.2003.1224756.

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Shetty, Devdas, Rakshith Kotian, Steevan Loyd Sequeira, Pavithra N. R., Umesh Pruthviraj, and K. V. Gangadharan. "An Economical Approach Towards Bathymetric Mapping of Shallow Water Basins Using Unmanned Surface Vessel." In ASME 2022 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/imece2022-97015.

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Abstract In recent years, the use of unmanned vehicles has advanced because of a growing number of civil applications such as firefighting or non-military security work, such as surveillance of pipelines etc. The application of these technologies with decreased cost and size has received attention in both civil and military applications. Recent advances in sensors, modeling and simulation and availability of open-source software and hardware for data integration has created an environment of remotely monitoring that was not possible a few years ago. This paper examines a niche cost-effective, portable Unmanned Surface Vessel that has been designed to capture the bathymetric profile of shallow water basins using single beam echosounder. Bathymetry is the measurement of the depth of water in oceans, rivers, or lakes. Bathymetric maps look a lot like topographic maps, which use lines to show the shape and elevation of land features. Today, echo sounders are used to make bathymetric measurements. Global shallow water bathymetry maps offer critical information to inform activities such as scientific research, environment protection, and marine transportation. Accurate mapping of shallow bathymetry is critical for understanding and characterizing coastal environments providing a foundation for measuring underwater light density, mapping and monitoring and planning marine operations and transportation. Methods for estimating shallow water bathymetry have suffered from a variety of trade-offs and limitations. Conventional methods such as shipborne sounding or airborne LiDAR have limited spatial coverage. The unit described in this paper has been designed and has been trained to acquire data in a predefined set path, minimizing the human intervention and the associated errors. A successful trial run was done for mapping the bed profile of the river basin in India. The vessel has been upskilled for capturing sonar data sets, with water quality parameters and soil samples using an automated auger. The vessel functions using the combined various open-source software and hardware tools for data assimilation, while the captured data sets are real-time transferred using IOT to Ground Controlled Station. The tropical river basin chosen is a part of Netravati River located in Dakshina Kannada District, Karnataka, India. This area is a part of the monsoon belt, and the Netravati riverbed is subjected to heavy sand deposition during a part of the year. The data on the excessive sand deposition is of immense value to the district and state administration. This study has been carried out at a frequency of 30 days and is provided as an input during non-monsoon period for district administration for outlining removal of excessive sand deposition monitoring of water quality in the estuarine ecosystem. The work done is a one-of-a-kind pilot study developed in-house using the recent advances seen in the world of open-source platforms. This paper demonstrates a unique application that is of value to the state administration in decision making and in addition contributes to environmental monitoring of the riverbed.
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Ivchenko, Dariya, Olga Alokhina, and Mykola Korus. "Lake Water Volume Calculation Using Bathymetric Survey, RS and GIS." In International Young Scientists Conference on Materials Science and Surface Engineering. Karpenko Physico-Mechanical Institute of the NAS of Ukraine, 2023. http://dx.doi.org/10.15407/msse2023.248.

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Estimates of lake volume and other morphometric parameters are needed to understand the role of water bodies in territorial resilience to climate change. Modern GIS methods for calculating lake volume improve on more dated technologies, but most of them do require detailed bathymetric data. In this research we describe a method to estimate lake volume with a set of data that consists of a bathymetric survey measurements, a GIS modeling and layer of Svitiaz Lake shoreline derived from remote sensing data.
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Seto, M. L., and A. Crawford. "Autonomous shallow water bathymetric measurements for environmental assessment and safe navigation using USVs." In OCEANS 2015 - MTS/IEEE Washington. IEEE, 2015. http://dx.doi.org/10.23919/oceans.2015.7404407.

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Reports on the topic "Bathymetric measurements"

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Bruder, Brittany L., Katherine L. Brodie, Tyler J. Hesser, Nicholas J. Spore, Matthew W. Farthing, and Alexander D. Renaud. guiBath y : A Graphical User Interface to Estimate Nearshore Bathymetry from Hovering Unmanned Aerial System Imagery. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/39700.

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This US Army Engineer Research and Development Center, Coastal and Hydraulics Laboratory, technical report details guiBathy, a graphical user interface to estimate nearshore bathymetry from imagery collected via a hovering Unmanned Aerial System (UAS). guiBathy provides an end-to-end solution for non-subject-matter-experts to utilize commercia-off-the-shelf UAS to collect quantitative imagery of the nearshore by packaging robust photogrammetric and signal-processing algorithms into an easy-to-use software interface. This report begins by providing brief background on coastal imaging and the photogrammetry and bathymetric inversion algorithms guiBathy utilizes, as well as UAS data collection requirements. The report then describes guiBathy software specifications, features, and workflow. Example guiBathy applications conclude the report with UAS bathymetry measurements taken during the 2020 Atlantic Hurricane Season, which compare favorably (root mean square error = 0.44 to 0.72 m; bias = -0.35 to -0.11 m) with in situ survey measurements. guiBathy is a standalone executable software for Windows 10 platforms and will be freely available at www.github.com/erdc.
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Bain, Rachel, Richard Styles, and Jared Lopes. Ship-induced waves at Tybee Island, Georgia. Engineer Research and Development Center (U.S.), 2022. http://dx.doi.org/10.21079/11681/46140.

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Commercial vessels transiting the Savannah entrance channel intermittently generate large wake events at Tybee Island, Georgia, creating a potential hazard for beachgoers. However, not all commercial vessels generate large wakes, and the relationship between vessel dimensions, operating conditions, wake height, and drawdown magnitude is unclear. This study evaluates bathymetric data, high-frequency wave and vessel wake measurements, and broadcast vessel identification over a 4-month period with the goal of providing a quantitative characterization of vessel wake conditions at Tybee Island. Data from 1,386 cargo vessel passages and 202 tanker passages indicate that vessel dimensions (length and beam) are positively correlated with drawdown magnitude and secondary wake height, although large vessels do not consistently generate large wakes. Container ships, which tended to travel faster than tankers, corresponded to the largest wakes in the dataset. A further hypothesis is that tidally modulated energy dissipation may favor smaller vessel wake uprush at low tide and larger uprush at high tide, but this idea cannot be confirmed without additional measurements to quantify nonlinear wave propagation on the beach face. Based on the collected data, the study concludes with four recommendations for reducing risk to beachgoers.
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McFall, Brian, and Guido Wolters. Investigation into laboratory bathymetric measurement techniques. Engineer Research and Development Center (U.S.), 2020. http://dx.doi.org/10.21079/11681/36038.

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Bell, Gary, David Abraham, Nathan Clifton, and Lamkin Kenneth. Wabash and Ohio River confluence hydraulic and sediment transport model investigation : a report for US Army Corps of Engineers, Louisville District. Engineer Research and Development Center (U.S.), 2022. http://dx.doi.org/10.21079/11681/43441.

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Avulsions of the Wabash River in 2008 through 2011 at its confluence with the Ohio River resulted in significant shoaling in the Ohio River. This caused a re-alignment of the navigation channel and the need for frequent dredging. A two-dimensional numerical hydrodynamic model, Adaptive Hydraulics (AdH), was developed to simulate base (existing) conditions and then altered to simulate multiple alternative scenarios to address these sediment issues. The study was conducted in two phases, Phase 1 in 2013 – 2015 and Phase 2 in 2018 – 2020. Field data were collected and consisted of multi-beam bathymetric elevations, bed sediment samples, suspended sediment samples, and discharge and velocity measurements. The model hydrodynamic and sediment transport computations adequately replicated the water surface slope, flow splits, bed sediment gradations, and suspended sediment concentrations when compared with field data. Thus, it was shown to be dependable as a predictive tool. The alternative that produced the most desirable results included a combination of three level-crested emergent dikes on Wabash Island and four submerged dikes on the Illinois shore with a level crest from the bank to the tip of the dike. The selected alternative produced an improved sailing line while maintaining authorized channel depths.
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Bak, A. Spicer, Patrick Durkin, Brittany Bruder, Matthew Saenz, Michael Forte, and Katherine Brodie. Amphibious uncrewed ground vehicle for coastal surfzone survey. Engineer Research and Development Center (U.S.), 2024. http://dx.doi.org/10.21079/11681/48130.

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The capability of a commercial off-the-shelf amphibious bottom crawling robot is explored for surveying seamless topography and bathymetry across the beachface, surfzone, and very nearshore. A real-time-kinematic (RTK) antenna on a mast was added to the robotic platform, a Bayonet-350 (previously the C2i SeaOx). Data collected from the robot were compared with those collected by the Coastal Research Amphibious Buggy (CRAB) and the Lighter Amphibious Resupply Cargo (LARC), unique amphibious vessels capable of collecting seamless topography and bathymetry in use for decades at the US Army Engineer Research and Development Center’s Field Research Facility (FRF). Data were compared on five different days in a range of wave conditions (Hs &lt; 1 m in 8-m depth) resulting in a root-mean square difference of 8.7 cm and bias of 2 cm for 24 different cross-shore profile comparisons. Additionally, a repeatability test was performed to assess measurement uncertainty. The repeatability test indicated a total vertical uncertainty (TVU) of 5.8 cm, with the highest spatial error at the shoreline.
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Oltman-Shay, Joan. A Beach Probing System (BPS) for Determining Surf Zone Bathymetry, Currents, and Wave Heights from Measurements Offshore. Defense Technical Information Center, 1999. http://dx.doi.org/10.21236/ada630444.

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Photogrammetric Data Set, 1957-2000, and Bathymetric Measurements for Columbia Glacier, Alaska. US Geological Survey, 2001. http://dx.doi.org/10.3133/wri20014089.

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