Relevant bibliographies by topics / Numerical oceanography

Contents

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

Academic literature on the topic 'Numerical oceanography'

Author: Grafiati
Published: 4 June 2021
Last updated: 13 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Numerical oceanography.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Numerical oceanography"

1

Haine, Thomas W. N., Renske Gelderloos, Miguel A. Jimenez-Urias, et al. "Is Computational Oceanography Coming of Age?" Bulletin of the American Meteorological Society 102, no. 8 (2021): E1481—E1493. http://dx.doi.org/10.1175/bams-d-20-0258.1.

Full text
Abstract:
AbstractComputational oceanography is the study of ocean phenomena by numerical simulation, especially dynamical and physical phenomena. Progress in information technology has driven exponential growth in the number of global ocean observations and the fidelity of numerical simulations of the ocean in the past few decades. The growth has been exponentially faster for ocean simulations, however. We argue that this faster growth is shifting the importance of field measurements and numerical simulations for oceanographic research. It is leading to the maturation of computational oceanography as a branch of marine science on par with observational oceanography. One implication is that ultraresolved ocean simulations are only loosely constrained by observations. Another implication is that barriers to analyzing the output of such simulations should be removed. Although some specific limits and challenges exist, many opportunities are identified for the future of computational oceanography. Most important is the prospect of hybrid computational and observational approaches to advance understanding of the ocean.
APA, Harvard, Vancouver, ISO, and other styles
2

Clancy, R. M., and W. D. Sadler. "The Fleet Numerical Oceanography Center Suite of Oceanographic Models and Products." Weather and Forecasting 7, no. 2 (1992): 307–27. http://dx.doi.org/10.1175/1520-0434(1992)007<0307:tfnocs>2.0.co;2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Nordam, Tor, and Rodrigo Duran. "Numerical integrators for Lagrangian oceanography." Geoscientific Model Development 13, no. 12 (2020): 5935–57. http://dx.doi.org/10.5194/gmd-13-5935-2020.

Full text
Abstract:
Abstract. A common task in Lagrangian oceanography is to calculate a large number of drifter trajectories from a velocity field precalculated with an ocean model. Mathematically, this is simply numerical integration of an ordinary differential equation (ODE), for which a wide range of different methods exist. However, the discrete nature of the modelled ocean currents requires interpolation of the velocity field in both space and time, and the choice of interpolation scheme has implications for the accuracy and efficiency of the different numerical ODE methods. We investigate trajectory calculation in modelled ocean currents with 800 m, 4 km, and 20 km horizontal resolution, in combination with linear, cubic and quintic spline interpolation. We use fixed-step Runge–Kutta integrators of orders 1–4, as well as three variable-step Runge–Kutta methods (Bogacki–Shampine 3(2), Dormand–Prince 5(4) and 8(7)). Additionally, we design and test modified special-purpose variants of the three variable-step integrators, which are better able to handle discontinuous derivatives in an interpolated velocity field. Our results show that the optimal choice of ODE integrator depends on the resolution of the ocean model, the degree of interpolation, and the desired accuracy. For cubic interpolation, the commonly used Dormand–Prince 5(4) is rarely the most efficient choice. We find that in many cases, our special-purpose integrators can improve accuracy by many orders of magnitude over their standard counterparts, with no increase in computational effort. Equivalently, the special-purpose integrators can provide the same accuracy as standard methods at a reduced computational cost. The best results are seen for coarser resolutions (4 and 20 km), thus the special-purpose integrators are particularly advantageous for research using regional to global ocean models to compute large numbers of trajectories. Our results are also applicable to trajectory computations on data from atmospheric models.
APA, Harvard, Vancouver, ISO, and other styles
4

Gordon, Donald C. "Gordon Arthur Riley: The Complete Oceanographer 1911-1985." Proceedings of the Nova Scotian Institute of Science (NSIS) 50, no. 1 (2019): 7. http://dx.doi.org/10.15273/pnsis.v50i1.8864.

Full text
Abstract:
Gordon Riley was an outstanding scientist who played a leading international role in the development of oceanography as a field of scientific study in the mid-twentieth century. His multidisciplinary approach, quantitative skills, imagination and intuition advanced our knowledge and understanding of the ocean enormously. Of his many significant scientific contributions to oceanography, he is best known for his pioneering work in developing simple numerical models for improving the understanding of the dynamics of marine ecosystems with a focus on plankton. He helped transform oceanography from a descriptive to a quantitative science. His early career was spent in the United States at the Bingham Oceanographic Laboratory of Yale University and the Woods Hole Oceanographic Institution. In 1965, at the peak of his career, he immigrated to Canada to become the director of the Institute of Oceanography at Dalhousie University. Under his leadership, the Institute evolved into the Department of Oceanography, which became an internationally recognized centre for marine research and teaching. During this period, he also played a prominent role in the development of the broader Canadian oceanographic community. He served as a wonderful example of how scientific research, teaching and a life should be carried out.
APA, Harvard, Vancouver, ISO, and other styles
5

Putri, Mutiara Rachmat, Iwan P. Anwar, Zetsaona Sihotang, et al. "Observation and numerical modeling of physical oceanography in the Balikpapan Bay, East Kalimantan: Preliminary results." Depik 10, no. 2 (2021): 130–35. http://dx.doi.org/10.13170/depik.10.2.19259.

Full text
Abstract:
The Indonesian government plans to move the capital city from Jakarta to Penajam Paser Utara (PPU) which is the upstream area of Balikpapan Bay, East Kalimantan. There are several activities in the planned new capital city that potentially affect the condition of land and marine ecosystems, including clearing new land for housing and agriculture as well as expanding mining and petroleum areas. Directly or indirectly, these activities could affect the oceanographic conditions of Balikpapan Bay. For this reason, in order to obtain an up-to-date picture of Balikpapan Bay, an oceanographic survey was conducted in early March 2020. In addition, to support the analysis of marine dynamics in these waters and their predictions in the future, numerical simulations of hydrodynamic modeling were also carried out. Oceanographic observations indicate significant water stratification in the area about 20 km from the mouth of the bay. This result is also well illustrated in the hydrodynamic model numerical simulation, where there is a water loop at the confluence between salt and fresh water masses from two rivers 18-20 km from the mouth of Balikpapan Bay. Keywords:The national capital city of IndonesiaBalikpapan BayPhysical oceanography ObservationCoastal and marine Ecosystem
APA, Harvard, Vancouver, ISO, and other styles
6

Biescas, Berta, Barry Ruddick, Jean Kormann, Valentí Sallarès, Mladen R. Nedimović, and Sandro Carniel. "Synthetic Modeling for an Acoustic Exploration System for Physical Oceanography." Journal of Atmospheric and Oceanic Technology 33, no. 1 (2016): 191–200. http://dx.doi.org/10.1175/jtech-d-15-0137.1.

Full text
Abstract:
AbstractMarine multichannel seismic (MCS) data, used to obtain structural reflection images of the earth’s subsurface, can also be used in physical oceanography exploration. This method provides vertical and lateral resolutions of O(10–100) m, covering the existing observational gap in oceanic exploration. All MCS data used so far in physical oceanography studies have been acquired using conventional seismic instrumentation originally designed for geological exploration. This work presents the proof of concept of an alternative MCS system that is better adapted to physical oceanography and has two goals: 1) to have an environmentally low-impact acoustic source to minimize any potential disturbance to marine life and 2) to be light and portable, thus being installed on midsize oceanographic vessels. The synthetic experiments simulate the main variables of the source, shooting, and streamer involved in the MCS technique. The proposed system utilizes a 5-s-long exponential chirp source of 208 dB relative to 1 μPa at 1 m with a frequency content of 20–100 Hz and a relatively short 500-m-long streamer with 100 channels. This study exemplifies through numerical simulations that the 5-s-long chirp source can reduce the peak of the pressure signal by 26 dB with respect to equivalent air gun–based sources by spreading the energy in time, greatly reducing the impact to marine life. Additionally, the proposed system could be transported and installed in midsize oceanographic vessels, opening new horizons in acoustic oceanography research.
APA, Harvard, Vancouver, ISO, and other styles
7

Ziegeler, Sean B., James D. Dykes, and Jay F. Shriver. "Spatial Error Metrics for Oceanographic Model Verification." Journal of Atmospheric and Oceanic Technology 29, no. 2 (2012): 260–66. http://dx.doi.org/10.1175/jtech-d-11-00109.1.

Full text
Abstract:
Abstract A common problem with modern numerical oceanographic models is spatial displacement, including misplacement and misshapenness of ocean circulation features. Traditional error metrics, such as least squares methods, are ineffective in many such cases; for example, only small errors in the location of a frontal pattern are translated to large differences in least squares of intensities. Such problems are common in meteorological forecast verification as well, so the application of spatial error metrics have been a recently popular topic there. Spatial error metrics separate model error into a displacement component and an intensity component, providing a more reliable assessment of model biases and a more descriptive portrayal of numerical model prediction skill. The application of spatial error metrics to oceanographic models has been sparse, and further advances for both meteorology and oceanography exist in the medical imaging field. These advances are presented, along with modifications necessary for oceanographic model output. Standard methods and options for those methods in the literature are explored, and where the best arrangements of options are unclear, comparison studies are conducted. These trials require the reproduction of synthetic displacements in conjunction with synthetic intensity perturbations across 480 Navy Coastal Ocean Model (NCOM) temperature fields from various regions of the globe throughout 2009. Study results revealed the success of certain approaches novel to both meteorology and oceanography, including B-spline transforms and mutual information. That, combined with other common methods, such as quasi-Newton optimization and land masking, could best recover the synthetic displacements under various synthetic intensity changes.
APA, Harvard, Vancouver, ISO, and other styles
8

Pinardi, Nadia, Emin Özsoy, Mohammed Abdul Latif, et al. "Measuring the Sea: Marsili’s Oceanographic Cruise (1679–80) and the Roots of Oceanography." Journal of Physical Oceanography 48, no. 4 (2018): 845–60. http://dx.doi.org/10.1175/jpo-d-17-0168.1.

Full text
Abstract:
ABSTRACTThe first in situ measurements of seawater density that referred to a geographical position at sea and time of the year were carried out by Count Luigi Ferdinando Marsili between 1679 and 1680 in the Adriatic Sea, Aegean Sea, Marmara Sea, and the Bosporus. Not only was this the first investigation with documented oceanographic measurements carried out at stations, but the measurements were described in such an accurate way that the authors were able to reconstruct the observations in modern units. These first measurements concern the “specific gravity” of seawaters (i.e., the ratio between fluid densities). The data reported in the historical oceanographic treatise Osservazioni intorno al Bosforo Tracio (Marsili) allowed the reconstruction of the seawater density at different geographic locations between 1679 and 1680. Marsili’s experimental methodology included the collection of surface and deep water samples, the analysis of the samples with a hydrostatic ampoule, and the use of a reference water to standardize the measurements. A comparison of reconstructed densities with present-day values shows an agreement within 10%–20% uncertainty, owing to various aspects of the measurement methodology that are difficult to reconstruct from the documentary evidence. Marsili also measured the current speed and the depth of the current inversion in the Bosporus, which are consistent with the present-day knowledge. The experimental data collected in the Bosporus enabled Marsili to enunciate a theory on the cause of the two-layer flow at the strait, demonstrated by his laboratory experiment and later confirmed by many analytical and numerical studies.
APA, Harvard, Vancouver, ISO, and other styles
9

Clancy, Michael. "Operational Modeling: Ocean Modeling at the Fleet Numerical Oceanography Center." Oceanography 5, no. 1 (1992): 31–35. http://dx.doi.org/10.5670/oceanog.1992.29.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Nelson, Cynthia A., and W. Tyson Aldinger. "An Overview of Fleet Numerical Oceanography Center Operations and Products." Weather and Forecasting 7, no. 2 (1992): 204–19. http://dx.doi.org/10.1175/1520-0434(1992)007<0204:aoofno>2.0.co;2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Numerical oceanography"

1

Manyilizu, Majuto Clement. "Numerical modelling of the coastal ocean off Tanzania." Master's thesis, University of Cape Town, 2009. http://hdl.handle.net/11427/17968.

Full text
Abstract:
Includes bibliographical references (pages 71-89).<br>In this model study of the coastal ocean off Tanzania, the Regional Ocean Modelling System (ROMS) was employed to model the coastal ocean off Tanzania over the domain of 5°N-15°S and 38-55°E. It was integrated for ten years with monthly mean Comprehensive Ocean and Atmosphere Data Sets (COADS) winds and heat fluxes. Initial and lateral boundary conditions were derived from the World Ocean Atlas. The model was used to simulate the annual cycle, and the sea surface temperature (SST) output compared with the Tropical Rainfall Measuring Mission (TRMM) Microwave Imager (TMI) sea surface temperature (SST) measurements for the same region. Although broadly comparable, the model SST was generally warmer than that of TMI data. The high SSTs in the Tanzanian coastal waters (greater than 28°C) occur from December to May while SSTs of less than 28°C occur during the rest of the year. The East African Coastal Current (EACC) experiences its lowest spatial and temporal average speeds (about 0.4ms- 1) in February and its maximum speed (1.7 ms⁻¹) in July. Speeds of greater than 1 ms⁻¹ occur during both transition seasons north of 6°S. The meridional wind stresses appear to be positively correlated with the EACC(r>0.6) in all locations and they are statistically significant (p<0.05). The annual cycle of the model flow in the southern Tanzanian waters seems to be positively correlated with the flow to the north of Madagascar (r=0.57 and p=O.O5). The flow in these regions changes in phase with each other from October to April and June to July with minimum speeds in November. For the other months, the flow in these regions is out of phase with each other. The model currents off southern Tanzania attain their maximum speeds in August when the South West monsoon is fully developed while the flow north of Madagascar attains its maximum speed in September when the South West monsoon fades. However, the flow in the southern Tanzanian waters is more affected by the reversal of winds over the tropical western Indian Ocean (r=0.69, p=0.01) than that north of Madagascar (r=0.51, p=0.09). This difference results in a larger annual speed range in the flow off southern Tanzania (about 0.4 ms⁻¹ ) than that to the north of Madagascar (about 0.3ms⁻¹). The ROMS model realistically simulates the annual cycle of the sea surface temperature and heat flux, the East African Coastal Current and the annual cycle of the flow entering the coastal ocean off the southern part of Tanzania. However, studies which integrate the large scale domain and regional coupled ocean-atmosphere interactions are needed to better understand of the East African climate and ocean variability. Such model results combined with suitable remote sensing and in situ observations will help improve understanding of the circulation and properties of the coastal ocean off Tanzania.
APA, Harvard, Vancouver, ISO, and other styles
2

Booth, Charles W. Gutsch Barbara J. "Military applications of intranet technology : Fleet Numerical Meteorology and Oceanography Center /." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1997. http://handle.dtic.mil/100.2/ADA337406.

Full text
Abstract:
Thesis (M.S. in Information Technology Management) Naval Postgraduate School, Sept. 1997.<br>Thesis advisors, James C. Emery, Frank L. Barrett. Includes bibliographical references (p. 145-146). Also available online.
APA, Harvard, Vancouver, ISO, and other styles
3

Booth, Charles W., and Barbara J. Gutsch. "Military applications of intranet technology: Fleet Numerical Meteorology and Oceanography Center." Thesis, Monterey, California. Naval Postgraduate School, 1997. http://hdl.handle.net/10945/8677.

Full text
Abstract:
Approved for public release; distribution is unlimited<br>Intranets are rapidly becoming a corporate internal information- sharing medium. Intranet technology is the same robust, proven, industry standard technology that is used on the Internet. The technical aspects of implementing the technology are simple. The organization and management aspects are significant and are key to its successful implementation. This internal use of Internet technology is easy, inexpensive, and has produced savings and benefits for corporate organizations. This thesis reviews corporate and government intranets and examines the feasibility of implementing this technology and benefiting from it, in a military organization. Specific applicability of Intranet technology was examined at Fleet Numerical Oceanographic and Meteorology Center, while maintaining the vision of its applicability to other military organizations. Fleet Numerical Oceanographic and Meteorology Center has the requisite technical and organizational infrastructure necessary to successfully implement Intranet technology. The management and technical skill sets necessary to successfully implement this technology at any military command operating a computer network should be available, or easily trained. Fleet Numerical Oceanographic and Meteorology Center and the U.S. Military should establish the organizational plans and infrastructure to implement and exploit this empowering information sharing medium.
APA, Harvard, Vancouver, ISO, and other styles
4

Bruner, Barry L. "A numerical study of baroclinic circulation in Monterey Bay." Thesis, Monterey, Calif. : Naval Postgraduate School, 1988. http://bosun.nps.edu/uhtbin/hyperion-image.exe/88Mar_Bruner.pdf.

Full text
Abstract:
Thesis (M.S. in Meteorology and Oceanography)--Naval Postgraduate School, March 1988.<br>Thesis Advisor(s): Smith, D.C. "March 1988." Includes bibliographical references (p. 37-38). Also available online.
APA, Harvard, Vancouver, ISO, and other styles
5

Timmermans, Ben. "Uncertainty in numerical wind-wave models." Thesis, University of Southampton, 2015. https://eprints.soton.ac.uk/378996/.

Full text
Abstract:
The modelling of ocean waves is now carried out routinely at meteorological centres around the world. However, little is know about the source of the uncertainty in the predictions of waves produced, and sources can be numerous depending on the specific application. Historically it was felt that the dominant source of uncertainty originated from incomplete knowledge and expression of forcing winds. However more recent studies have focused on the underlying physical processes and their representations, with some authors questioning whether the limitation of the current modelling approach has been reached. Recently, methods for the statistical analysis of complex computer models, including models such as those used for wave prediction, have been developed. In this thesis these methods are applied to perform the first ever uncertainty analysis of a wave model. These new methods are applied to the state of the art wave model Wavewatch IIIr. This thesis principally explores the effect of tuning parameter uncertainty relating to the “Tolman and Chalikov” input and dissipation parameterisation, the discrete interaction approximation scheme for nonlinear wave-wave interactions and uncertainty about wind forcing, on wave simulation output, in a range of idealised cases, and realistically on Lake Michigan. The effectiveness of the statistical methods is first demonstrated in simple cases, before analysis is performed for progressively more complex simulations. In each case, uncertainty measures are computed with respect to simulation output in terms of summary wave statistics, typically including significant wave height and peak period. The analysis reveals nonlinear response and the relative importance of the various input, which in turn shows the active physical processes, and where the greatest sources of uncertainty lie. Both uncertainty about wind forcing and the process of nonlinear wave-wave interactions are found to be dominant in all cases, although energy dissipation is important in growing sea states. Finally, observational wave height data is used to perform a parameter calibration for simulations of stormy conditions on Lake Michigan, leading to improved performance.
APA, Harvard, Vancouver, ISO, and other styles
6

Carson, Nuala. "Numerical modelling of landfast sea ice." Thesis, University of Liverpool, 2014. http://livrepository.liverpool.ac.uk/18773/.

Full text
Abstract:
Landfast sea ice is a recurring seasonal feature along many coastlines in the polar regions. It is characterised by a lack of horizontal motion, for at least 20 days, and its attachment to the coast or seabed. It can form as a result of restrictive geometry, such as channels or embayments, or through the grounding of thick ice ridges which add lateral stability to the ice cover. Due to its stationary and persistent nature, landfast ice fundamentally modifies the exchange of heat and momentum between the atmosphere and ocean, compared with more mobile pack ice. The current generation of sea ice models is not capable of reproducing certain aspects of landfast ice formation and breakup. In this work two landfast ice parameterisations were developed, which describe the formation and breakup of landfast ice through the grounding of thick ice ridges. The parameterisations assume the sub-grid scale distribution of ice draft and ocean depth, the two parameters important in determining the occurrence of grounded ridges. The sub-grid scale distribution of grounded ice is firstly defined by assuming that ice draft and ocean depth are independent. This parameterisation allowed ice of any thickness to occur and ground at any depth. Advancing from this the sub-grid scale distribution of the grounded ice was restricted in an effort to make it more realistic. Based on Arctic ice scour observations ice was prevented from grounding in regions where the draft thickness was much larger than the ocean depth. Both parameterisations were incorporated into a commonly used sea ice model, the Los Alamos Sea Ice Model (CICE), to which a multi-category ocean depth distribution from high resolution global bathymetry data (ETOPO1) was included. The parameterisations were tested in global standalone format (i.e. no active ocean) with realistic atmospheric forcing. Both parameterisations were found to improve the spatial distribution and the seasonal cycle of landfast ice compared to the control (i.e. no landfast ice parameterisation) in the Arctic and Antarctic. However, the grounded ridges produced by the parameterisations were very stable, and tended to become multiyear leading to the production of multiyear landfast ice, which was particularly widespread in the Antarctic. It was found that tides have a significant impact on both grounded and landfast ice. In some polar locations tides were found to increase the occurrence of landfast ice, by increasing the production of thick ridges which were able to ground. Conversely, in some regions, tides were found to decrease the occurrence of landfast ice, as strong tidal and residual currents increased the mobility of the grounded ridges and landfast ice. This thesis finishes by considering whether a sea ice model could be used to further our understanding of the physical landfast ice system. Analytically derived characteristic numbers, which describe the ability of landfast ice to form, were found to fully describe the formation of landfast ice within the sea ice model CICE during idealised 1D scenarios. For these scenarios the key parameters controlling ice motion were found to be the external forcing component, the width of the ice cover, the internal ice strength, and the thickness of the ice. However, an exact characteristic variable able to describe the occurrence of landfast ice in an idealised 2D scenario could not be found analytically, nor could it be inferred numerically, and this remains an area for further research. This thesis examines different methods of modelling landfast sea ice and provides the sea ice modelling community with a means to parametrise landfast ice formation as a result of grounded ridges without having to work at very fine resolution, as this is computationally inefficient.
APA, Harvard, Vancouver, ISO, and other styles
7

Veitch, Jennifer Anne. "Equilibrium dynamics of the Benguela system : a numerical modelling approach." Doctoral thesis, University of Cape Town, 2009. http://hdl.handle.net/11427/12153.

Full text
Abstract:
Includes abstract.<br>Includes bibliographical references (p. 237-255).<br>The Regional Ocean Modelling System (ROMS) is used to systematically investigate equilibrium conditions and seasonal variations of the Benguela system, including both the large-scale flow regime as well as the coastal upswelling regime. A shelf-edge poleward flow exists in the northern Benguela region and is driven primarily by the wind-stress curl via the Sverdup relation. As such, it is strongly seasonal and is most intense during spring and summer when the wind-stress curl is most negative. The poleward flow deepens as it moves southward and between 25-27° much of it veers offshore due to the nature of of the wind-stress curl. In the mean state, the Benguela Current is characterized by two streams: the more inshore stream is topographically controlled and follows the run of the shelf-edge. The offshore stream is driven by nonlinear reactions of passing Aghulas rings and eddies and does not have a striking seasonal signal. The model simulates all seven of the major upswelling cells within its domain.
APA, Harvard, Vancouver, ISO, and other styles
8

MacKinnon, Douglas J. "A communication link software model for Fleet Numerical Meteorology and Oceanography Center." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2000. http://handle.dtic.mil/100.2/ADA384723.

Full text
Abstract:
Thesis (M.S. in Information Technology Management) Naval Postgraduate School, Dec. 2000.<br>Thesis advisor(s): Osmundson, John S. "December 2000." Includes bibliographical references (p. 29). Also available in print.
APA, Harvard, Vancouver, ISO, and other styles
9

Murton, Gary John. "Wave overtopping : a comparison of physical and numerical studies." Thesis, University of Plymouth, 1991. http://hdl.handle.net/10026.1/2361.

Full text
Abstract:
The overtopping of low-crested breakwater is investigated by means of hydraulic and mathematical models. A conventional laboratory wavemaker with a wedge-type paddle is converted into an absorbing wavemaker so that it can be used to investigate accurately wave overtopping of reflective coastal structures. The absorption system is achieved by use of a feedback loop added to the control circuit. The design criteria and implementation of the circuit are presented in detail. Enhanced control software is used to generate different 'random' sea states with the same statistical properties. The absorption system is validated by an extensive series of tests made possible by the development of automated data acquisition and analysis software. Particular attention is given to the derivation of incident and reflected wave spectra. The results show over 90% success in reducing reflected waves. It is also possible to establish stable standing wave patterns over a wide frequency range. The results show significant improvement over similar existing wavemakers and in effect create an open-ended channel in the sense that the test structure hardly influences incident wave conditions. A closely controlled series of overtopping tests was carried out using the absorption system to prevent any re-reflections. Equipment and software were designed to quantify the overtopping rates for the structures used. The design and implementation of all aspects of the tests is fully described. Overtopping tests were carried out on breakwaters with smooth 1: 1 and 1: 2 seaward slopes. The results are tabulated and plotted in a dimensionless form which permits comparison with earlier work carried out at Hydraulics Research Ltd. The range of available data is extended and the new data for fully-developed sea states shown to be compatible with a linear extrapolation of the earlier results. It is believed that the earlier results were obtained using fully developed sea states but this is not known for certain. The importance of rigorously defining and publishing both test conditions and analysis techniques is highlighted. In the numerical study the 1-D mass and continuity equations were solved by a hybrid finite element/finite difference scheme. Whilst a good comparison is achieved between the physical and numerical tests for breakwater slopes of 1: 2 and less, realistic results are not achieved for steeper slopes. The reasons for this are discussed and the results presented. Both sets of model tests add valuable data to an area presently lacking detailed information.
APA, Harvard, Vancouver, ISO, and other styles
10

Shen, Jian. "Boundary Layer Structure in Homogeneous Tidal Flows: A Theoretical and Numerical Study." W&M ScholarWorks, 1993. https://scholarworks.wm.edu/etd/1539617653.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Numerical oceanography"

1

1938-, Murty T. S., ed. Numerical modeling of ocean dynamics. World Scientific, 1993.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

J, O'Brien James, and North Atlantic Treaty Organization. Scientific Affairs Division., eds. Advanced physical oceanographic numerical modelling. D. Reidel Pub. Co., 1986.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Bruner, Barry L. A numerical study of baroclinic circulation in Monterey Bay. Naval Postgraduate School, 1988.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Kantha, L. H. Numerical models of oceans and oceanic processes. Academic, 2000.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Davis, George P. A numerical study of eddy interactions with a barotropic oceanic jet. Naval Postgraduate School, 1988.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Huddleston, Ray T. A numerical study of eddy steering by background flows. Naval Postgraduate School, 1990.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

Aubrey, David G. Kings Bay / Cumberland Sound, Georgia. Part II: Numerical modeling. Woods Hole Oceanographic Institution, 1987.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Aubrey, David G. Kings Bay / Cumberland Sound, Georgia. Part II: Numerical modeling. Woods Hole Oceanographic Institution, 1987.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

Walker, James C. G. Numerical adventures with geochemical cycles. Oxford University Press, 1991.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Booth, Charles W. Military applications of intranet technology: Fleet Numerical Meteorology and Oceanography Center. Naval Postgraduate School, 1997.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Numerical oceanography"

1

Bruner de Miranda, Luiz, Fernando Pinheiro Andutta, Björn Kjerfve, and Belmiro Mendes de Castro Filho. "Numerical Hydrodynamic Modelling." In Fundamentals of Estuarine Physical Oceanography. Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-3041-3_12.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Legendre, Louis, Carol D. Collins, Clarice M. Yentsch, et al. "Numerical Ecology: Developments for Biological Oceanography and Limnology." In Develoments in Numerical Ecology. Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-70880-0_16.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Prakash, T. N., L. Sheela Nair, and T. S. Shahul Hameed. "Numerical Modelling of Coastal Processes of Kavaratti Island." In Geomorphology and Physical Oceanography of the Lakshadweep Coral Islands in the Indian Ocean. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-12367-7_4.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Macías, J., C. Parés, and M. J. Castro. "Numerical simulation in oceanography. applications to the Alboran Sea and the Strait of Gibraltar." In Ocean Circulation and Pollution Control — A Mathematical and Numerical Investigation. Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-642-18780-3_5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Dijkstra, Henk A. "Numerical Techniques." In Atmospheric and Oceanographic Sciences Library. Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-015-9450-9_4.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Schwiderski, Ernst W. "Worldwide Ocean Tide Modelling." In Advanced Physical Oceanographic Numerical Modelling. Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-017-0627-8_20.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Davies, A. M. "Mathematical Formulation of a Spectral Tidal Model." In Advanced Physical Oceanographic Numerical Modelling. Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-017-0627-8_21.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Davies, A. M. "Mathematical Formulation of a Spectral Circulation Model." In Advanced Physical Oceanographic Numerical Modelling. Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-017-0627-8_22.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Røed, L. P., and C. K. Cooper. "Open Boundary Conditions in Numerical Ocean Models." In Advanced Physical Oceanographic Numerical Modelling. Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-017-0627-8_23.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Anderson, David L. T., and Andrew M. Moore. "Data Assimilation." In Advanced Physical Oceanographic Numerical Modelling. Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-017-0627-8_24.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Numerical oceanography"

1

Pollak, Kenneth D., and R. Michael Clancy. "Developments in High Performance Computing at Fleet Numerical Meteorology and Oceanography Center." In Proceedings of the Ninth ECMWF Workshop on the Use of High Performance Computing in Meteorology. WORLD SCIENTIFIC, 2001. http://dx.doi.org/10.1142/9789812799685_0028.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Bergamasco, Andrea, Francesco M. Falcieri, Jeffrey W. Book, et al. "Exploring the shelf-slope dynamics in the Adriatic Sea using numerical models and seismic oceanography (SO)." In ICA 2013 Montreal. ASA, 2013. http://dx.doi.org/10.1121/1.4799347.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Sasa, Kenji, Daisuke Terada, Shigeaki Shiotani, Nobukazu Wakabayashi, and Teruo Ohsawa. "Current Situation and Difficulty of Wave Forecast From Viewpoint of Ship Management." In ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/omae2013-10257.

Full text
Abstract:
Numerical forecasts of weather and oceanography are increasingly common in the field of ship operations due to advances in computer science. However, in some situations, the accuracy of forecasts is too unreliable to ensure safe operations. In the current study, a nationwide questionnaire is used to determine the effectiveness of wave forecasts in enhancing navigation safety. Data analysis is also shown for two cases of failed forecasts in low-pressure weather systems near Japan in the winter. Finally, recommendations are made for improving wave forecasts from the viewpoint of ship operations.
APA, Harvard, Vancouver, ISO, and other styles
4

Blondel, Elise, Guillaume Ducrozet, Fe´licien Bonnefoy, and Pierre Ferrant. "Deterministic Reconstruction and Prediction of a Non-Linear Wave Field Using Probe Data." In ASME 2008 27th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2008. http://dx.doi.org/10.1115/omae2008-57558.

Full text
Abstract:
The accurate simulation of non-linear sea states evolution over long time periods represents a great challenge, with number of applications in oceanography, marine engineering, security of people or marine transportation, etc... The aim of this study is to develop an efficient deterministic prediction model for irregular wave fields based on the exploitation of wave elevation time series given by one or more probes. We use the High-Order-Spectral model (HOS) to simulate numerically the wave field evolution, in order to take the non-linear effects up to a desired order into account. In this paper, we report on the development of an effective reconstruction scheme, for two dimensional wave fields and using one wave record, that allows us to get proper initial conditions for numerical simulations and nonlinear wave fields forecast.
APA, Harvard, Vancouver, ISO, and other styles
5

Bitner-Gregersen, Elzbieta M., and Odin Gramstad. "Comparison of Temporal and Spatial Statistics of Nonlinear Waves." In ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/omae2019-95357.

Full text
Abstract:
Abstract In the past, it was most common to derive wave parameters and their statistics from time series of wave elevation. The duration of the wave records has been usually restricted to 20 or 30 minutes. Recently, increasing attention has started to be given to spatial wave data and wave statistics, particularly due to introduction in oceanography of stereo camera systems for collecting space–time ensemble of sea surface elevation. Using numerical linear, 2nd and 3rd order simulations this study compares temporal and spatial statistics of wave parameters. The 3rd order wave data are simulated by a numerical solver based on the Higher Order Spectral Method (HOSM) which includes the leading order nonlinear dynamical effects, accounting for the effect of modulational instability. The Pierson-Moskowitz and the JONSWAP spectrum with different gamma parameters are used in the analysis. Sea states with wave steepness where rogue waves were recorded in nature are considered. Consequences of using temporal contra spatial statistics are discussed in perspective of marine structures’ design. Functional dependency between wave parameters characterizing occurrence of rogue waves in unidirectional wave field is proposed.
APA, Harvard, Vancouver, ISO, and other styles
6

Cies´likiewicz, Witold, and Ove T. Gudmestad. "System Identification Techniques for Prediction of Fluid Accelerations Under Irregular Waves Based on Free-Surface Elevation Measurements." In ASME 2002 21st International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2002. http://dx.doi.org/10.1115/omae2002-28408.

Full text
Abstract:
A parametric model linking the free-surface elevations with the fluid acceleration field under an irregular wave is developed. In order to estimate the parameters of the model, system identification procedures are applied based on data recorded in a wave tank. The free-surface time series are taken as input data and the output data are components of the particle acceleration vector. The particle acceleration time series were obtained by taking the numerical derivative of the measured orbital velocity time series. A simple algorithm of numerical diffrentiation is proposed. This algorithm gives very accurate values of the particle acceleration and is quite straightforward as the derivative is computed directly in time domain. A linear time-invariant model with the static nonlinearities incorporated at the input side is assumed. This paper demonstrates the results of modelling the horizontal component of the particle acceleration in comparison with the time series calculated from wave kinematics data taken in a wave flume during an earlier experiment using Laser Doppler Velocimetry. The modelled particle acceleration time series compare well with those calculated from the observed velocity time series. This proves the effectiveness of the applied approach. The system identification techniques allow for preparing the model which constructs the wave kinematics (both velocities and accelerations) using the measured time series of only the free-surface elevation. This feature of the proposed approach may be very useful in maritime engineering and oceanography.
APA, Harvard, Vancouver, ISO, and other styles
7

Dias, Frédéric, Joseph Brennan, Sonia Ponce de León, Colm Clancy, and John Dudley. "Local Analysis of Wave Fields Produced From Hindcasted Rogue Wave Sea States." In ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/omae2015-41458.

Full text
Abstract:
Global-scale wave climate models, such as WAVEWATCH III, are widely used in oceanography to hindcast the sea state that occurred in a particular geographic area at a particular time. These models are applied in rogue-wave science for characterizing the sea states associated with observations of rogue waves (e.g., the well known “Draupner” [1] or “Andrea” [2] waves). While spectral models are generally successful in providing realistic representations of the sea state and are able to handle a large number of physical factors, they are also based on a very coarse grained representation of the wave field and therefore unsuitable for a detailed resolution of the wave field and refined wave-height statistics. On the other hand, local wave models based on first-principle fluid dynamics equations (such as the Higher Order Spectral Method) are able to represent wave fields in detail, but in general they are hard to interface with the full complexity of real-world sea conditions. This paper displays our efforts in coupling these two types of models in order to enhance our understanding of past extreme events and provide scope for rogue wave risk evaluation. In particular, high resolution numerical simulations of a wave field similar to the “Andrea” wave one are performed, allowing for accurate analysis of the event.
APA, Harvard, Vancouver, ISO, and other styles
8

Serpa, Patrick, Leila Weitzel, and Leandro Calado. "Iintegration of numerical oceanographic modeling systems via web services." In 2018 13th Iberian Conference on Information Systems and Technologies (CISTI). IEEE, 2018. http://dx.doi.org/10.23919/cisti.2018.8399201.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Suzuki, Hiroyoshi, Tomoya Inoue, Yoshitaka Watanabe, Hiroshi Yoshida, Risa Kitamoto, and Atsushi Yamamichi. "Experimental and Numerical Study on Propulsive Performance of AUV." In ASME 2010 29th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/omae2010-20498.

Full text
Abstract:
Recently, several underwater vehicles (UVs) including autonomous underwater vehicles (AUVs) and remotely operated vehicles (ROVs) have been developed. The purpose that such UVs are applied is various and the required performance for the UVs are also various. For example, they are oceanographic survey with long-distance cruising, plankton investigatory with high maneuverability and so on. Therefore, suitable UV for the mission is should be designed. In the above examples, UV that has the low resistance form is suitable for long-distance cruising; UV with low added mass form is suitable for plankton investigatory. Form the above viewpoint; we began working on a project to improve the UV’s hull form. Firstly, we focus on the resistance performance of UV within the resistance performance and maneuverability of UV. Using experimental and numerical methods, the relationship between the resistance performance and the UV’s hull form are investigated. In this paper, the part of the above results is introduced.
APA, Harvard, Vancouver, ISO, and other styles
10

Portillo, Juan C. C., Joao C. C. Henriques, Luis M. C. Gato, Rui P. F. Gomes, and Antonio F. O. Falcão. "Performance Assessment of a Floating Coaxial Ducted OWC Wave Energy Converter for Oceanographic Purposes." In ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/omae2015-41975.

Full text
Abstract:
This paper presents a numerical study on a floating coaxial ducted OWC wave energy converter equipped with a biradial air turbine to meet the requirements of an oceanographic sensor-buoy. The study used representative sea states of the Monterey Bay, California, USA. The geometry of the coaxial ducted OWC was hydrodynamically optimized using a frequency domain approach considering a linear air turbine. Afterwards, a time domain analysis was carried out for the system equipped with a biradial turbine. The turbine rotor diameter and the optimum generator’s control curves were determined, based on results for representative sea states. Results show that mean power output fulfills the requirement for oceanographic applications (300–500W) using a turbine rotor diameter of 0.25 m. Furthermore, the system’s performance is strongly influenced by the inertia of the turbine and the generator rated power. These results confirmed the suitability of using the coaxial ducted OWC as a self-sustainable oceanographic sensor-buoy.
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Numerical oceanography"

1

Rogers, W. E., David Wang, Larry Hsu, Paul Wittmann, and Michael Clancy. Evaluations of Global Wind Prediction at Fleet Numerical Meteorology and Oceanography Center: from the Perspective of a Wave Modeler. Defense Technical Information Center, 2004. http://dx.doi.org/10.21236/ada430059.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Preller, R. The NORDA/FNOC (Naval Ocean Research and Development Activity's/Fleet Numerical Oceanography Center) Polar Ice Prediction System (PIPS) - Arctic: A Technical Description. Defense Technical Information Center, 1985. http://dx.doi.org/10.21236/ada156332.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Gobat, Jason I., and Mark A. Grosenbaugh. WHOI Cable v2.0: Time Domain Numerical Simulation of Moored and Towed Oceanographic Systems. Defense Technical Information Center, 2000. http://dx.doi.org/10.21236/ada383978.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Numerical oceanography' for particular source types:
Journal articles Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography