Academic literature on the topic 'Offshore in-situ measurements'

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Journal articles on the topic "Offshore in-situ measurements"

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Girleanu, Alina, Florin Onea, and Eugen Rusu. "Assessment of the Wind Energy Potential along the Romanian Coastal Zone." Inventions 6, no. 2 (2021): 41. http://dx.doi.org/10.3390/inventions6020041.

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The present work aims to provide a comprehensive picture of the wind energy potential that characterizes the Romanian coastal environment using in situ measurements and reanalysis of wind data (ERA5) that cover a 42–year time interval (1979–2020). A total of 16 reference points (both land and offshore) equally distributed along the Romanian sector are used to evaluate the local wind energy potential, targeting in this way several sites where a renewable wind project could be established. Compared to the in situ measurements (land points), the ERA5 dataset underestimates the wind speed by at le
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Jangir, Pramod Kumar, Kevin C. Ewans, and Ian R. Young. "On the Functionality of Radar and Laser Ocean Wave Sensors." Journal of Marine Science and Engineering 10, no. 9 (2022): 1260. http://dx.doi.org/10.3390/jmse10091260.

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Ocean wave design criteria are required for the design of offshore platforms and floating systems, which are derived using in situ measurements. However, there is uncertainty regarding the performance of the instruments used for the in situ measurements. The main instruments used by the offshore industry are the Datawell Directional Waverider buoy and Rosemount WaveRadar, with Laser instruments also having been used for specific studies. Recent reports indicate measurements from these three instruments differ in the order of 10% but given the quite disparate nature of the measurements made by
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Remmers, Tiny, Fiona Cawkwell, Cian Desmond, Jimmy Murphy, and Eirini Politi. "The Potential of Advanced Scatterometer (ASCAT) 12.5 km Coastal Observations for Offshore Wind Farm Site Selection in Irish Waters." Energies 12, no. 2 (2019): 206. http://dx.doi.org/10.3390/en12020206.

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The offshore wind industry has seen unprecedented growth over the last few years. In line with this growth, there has been a push towards more exposed sites, farther from shore, in deeper water with consequent increased investor risk. There is therefore a growing need for accurate, reliable, met-ocean data to identify suitable sites, and from which to base preliminary design and investment decisions. This study investigates the potential of hyper-temporal satellite remote sensing Advanced Scatterometer (ASCAT) data in generating information necessary for the optimal site selection of offshore
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Sultan, Nabil, and Sara Lafuerza. "In situ equilibrium pore-water pressures derived from partial piezoprobe dissipation tests in marine sediments." Canadian Geotechnical Journal 50, no. 12 (2013): 1294–305. http://dx.doi.org/10.1139/cgj-2013-0062.

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Excess pore-water pressure has a significant effect on submarine slope stability and sediment deformation, and therefore its in situ equilibrium measurement is crucial in carrying out accurate slope stability assessments and accurately deriving geotechnical design parameters. In situ equilibrium pore-water pressure is usually obtained from pore pressure decay during piezocone tests. However, submarine shelves and slopes are often characterized by the existence of low-permeability (fine-grained) sediments involving long dissipation tests that are an important issue for offshore operational cost
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Mizuta, Darien Danielle, and Gary H. Wikfors. "Depth Selection and In Situ Validation for Offshore Mussel Aquaculture in Northeast United States Federal Waters." Journal of Marine Science and Engineering 7, no. 9 (2019): 293. http://dx.doi.org/10.3390/jmse7090293.

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As mariculture progresses offshore in the US Exclusive Economic Zone, technical and ecological challenges need to be overcome, such as the choice of suitable sites that favor the production of target species. The offshore culture of blue mussels, Mytilus edulis, is performed with submerged longlines and mussels need to withstand more motion than on coastal sites. Temperature affects the ability of the byssus to adhere to farming rope, while chlorophyll concentration provides an estimation of food availability. Together, these are important factors in predicting the suitability of offshore muss
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Hudec, Bojan, Karla Ribičić, Sanja Martinez, and Ivana Šoić. "Quantitative Coating Quality Assessment on an Offshore Platform." Materials Performance 61, no. 1 (2022): 52–56. https://doi.org/10.5006/mp2022_61_1-52.

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Early signs of coating degradation were investigated by impedance measurements at 40 locations on a docked, jacketed offshore platform 1.5 and 2 years after full coating renewal. The platform coatings were evaluated in comparison to 38 reference samples with partial and complete coating systems that were aged at the shoreline for 1.5 years and subsequently tested in the laboratory in dry and wet states. The quantitative coating quality approach based on log Z measurements at 0.1 Hz and subsequent statistical analysis has provided means to quantitatively assess coating degradation in situ and i
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Saviano, Simona, Anastasia Angela Biancardi, Florian Kokoszka, et al. "HF Radar Wind Direction: Multiannual Analysis Using Model and HF Network." Remote Sensing 15, no. 12 (2023): 2991. http://dx.doi.org/10.3390/rs15122991.

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HF radar systems have the potential to measure the wind direction, in addition to surface currents and wave fields. However, studies on HF radar for wind direction determination are rare in the scientific literature. Starting with the results presented in Saviano et al. (2021), we here expand on the reliability of the multiannual wind direction data retrieved over two periods, from May 2008 to December 2010 and from January to December 2012, by a network of three SeaSonde high-frequency (HF) radars operating in the Gulf of Naples (Central Tyrrhenian Sea, Western Mediterranean Sea). This study
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Zhang, Hong, Xiaolei Liu, Anduo Chen, Weijia Li, Yang Lu, and Xingsen Guo. "Design and Application of an In Situ Test Device for Rheological Characteristic Measurements of Liquefied Submarine Sediments." Journal of Marine Science and Engineering 9, no. 6 (2021): 639. http://dx.doi.org/10.3390/jmse9060639.

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Liquefied submarine sediments can easily lead to submarine landslides and turbidity currents, and cause serious damage to offshore engineering facilities. Understanding the rheological characteristics of liquefied sediments is critical for improving our knowledge of the prevention of submarine geo-hazards and the evolution of submarine topography. In this study, an in situ test device was developed to measure the rheological properties of liquefied sediments. The test principle is the shear column theory. The device was tested in the subaqueous Yellow River delta, and the test results indicate
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Ji, Weidong, Rongfu Li, Wenfei Xue, et al. "Evaluation of ERA5 wind parameter with in-situ data offshore China." PLOS One 20, no. 5 (2025): e0317751. https://doi.org/10.1371/journal.pone.0317751.

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There are abundant wind energy resources along the coast of China. Understanding spatial-temporal characteristics of wind speed is significant in meteorology, coastal engineering design and maritime industries. Reliable wind products such as reanalysis data, coupled with accurate wind speed measurements, are essential for elucidating the primary characteristics of the wind field. In this study, we evaluated hourly 10 m and 100 m wind speed data from the fifth-generation ECMWF atmospheric reanalysis (ERA5) by comparing it with direct wind measurements obtained from 19 wind tower located across
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Calore, Daniele, and Nicola Fraticelli. "State of the Art Offshore In Situ Monitoring of Microplastic." Microplastics 1, no. 4 (2022): 640–50. http://dx.doi.org/10.3390/microplastics1040044.

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Microplastics make up a significant amount of the overall quantity of plastic debris that is present in seawater. However, their detection and monitoring at sea is cost-inefficient and challenging; typically, it consists of water sampling with special manta nets, followed by long (i.e., weeks) laboratory analysis to obtain valid results. The analysis of the state-of-the-art technologies capable of monitoring/detecting microplastics in the sea (typically in coastal areas) presented in this paper shows that there are currently no specific tools to obtain quick measurements. The classic multipara
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Dissertations / Theses on the topic "Offshore in-situ measurements"

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Strömstedt, Erland. "Submerged Transmission in Wave Energy Converters : Full Scale In-Situ Experimental Measurements." Doctoral thesis, Uppsala universitet, Elektricitetslära, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-179740.

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Different wave power technologies are in development around the world in different stages of prototype testing. So far only a few devices have been deployed offshore at full scale for extended periods of time. Little data is published about how these different devices perform. This thesis presents results from experiments with the full-scale offshore wave energy converters at the Lysekil research site on the Swedish west coast. The theories, experiments, measurements, performance evaluations and developments of the submerged transmission in the direct driven permanent magnet linear generator a
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Marcille, Robin. "Learning-based forecasting of metocean variables : a path to maintenance operations optimization for offshore wind energy." Electronic Thesis or Diss., Ecole nationale supérieure Mines-Télécom Atlantique Bretagne Pays de la Loire, 2024. http://www.theses.fr/2024IMTA0416.

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Les opérations de maintenance de l’éolien en mer sont sensibles aux incertitudes des prévision météo-océaniques. Les modèles de prévision numérique sont limités par leur coût de calcul pour l’estimation des incertitudes, ce qui pousse au développement de méthodes basées sur l’apprentissage profond. L’importance des mesures in-situ en mer est mis en exergue par les résultats de cette thèse. Une méthode basée sur le clustering non supervisé de données de modèle numérique est proposée pour la définition d’un réseau de capteurs optimal pour la reconstruction de la ressource en vent. Des méthodes d
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Laya, Enrique J. "Système de surveillance pour la détection du dommage de fatigue cumulée dans les structures offshore en acier." Châtenay-Malabry, Ecole centrale de Paris, 1987. http://www.theses.fr/1987ECAP0048.

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Pour vérifier le comportement des liaisons tubulaires soudées, étude d'un système de mesure en temps réel des déformations sur la section nominale des tubes arrivant aux noeuds ; technologiquement le système est conçu à partir des matériels existants.
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Books on the topic "Offshore in-situ measurements"

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Mardell, G. T., and J. Galloway. An Intercomparison of Dual H.F. Long Range Radar Data with in Situ Current Measurements (Offshore Technology Report). Stationery Office Books, 1989.

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Book chapters on the topic "Offshore in-situ measurements"

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Silva, Armand J. "Comparison of in Situ and Ship-Board Vane Measurements on a Deep-Sea Clay." In Offshore Site Investigation. Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-011-7358-2_14.

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Stuyts, Bruno, Wout Weijtjens, Carlos Sastra Jurado, and Christof Devriendt. "Improved Monopile-Soil Interaction Modeling through In Situ Monitoring." In State-of-the-Art of Mathematical Modelling, Dynamics, and Control of Wind Turbines Engineering [Working Title]. IntechOpen, 2024. http://dx.doi.org/10.5772/intechopen.1006730.

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The performance of offshore wind turbines is strongly influenced by the structural dynamics of the overall support structure. In situ measurements of the natural frequency of monopile-supported wind turbine structures have highlighted a mismatch between the as-designed and as-built natural frequencies of these structures. This design inaccuracy can be attributed to the lateral stiffness provided by the subsoil. Accurate characterization of the lateral support provided by the soil is further complicated by the non-linear and cyclic behavior of soil. Recent research on monopile soil-structure in
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Wu, Caihong, Chunxi Zhuang, and Xu Zhang. "Application of Dipole Acoustic Logging in Wave Velocity Testing in Soft Formation in Offshore Areas." In Advances in Transdisciplinary Engineering. IOS Press, 2024. https://doi.org/10.3233/atde241157.

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Wave velocity measurement is one of the frequently-used and indispensable in-situ test in offshore wind power engineering investigation. The test results can be used to calculate the dynamic parameters of the soil and to evaluate the engineering geological characteristics of the site. Influenced by the severe environment in the ocean, the traditional continental wave velocity measurement is greatly restricted, and it is necessary to carry out a comparative study on the in-situ wave velocity test method in offshore. Relying on Jiangsu Dafeng offshore wind power project, through the field applic
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Coop M.R., Fahey M., and Consoli N.C. "The interpretation of conventional and non-conventional laboratory tests for challenging geotechnical problems." In Deformation Characteristics of Geomaterials. IOS Press, 2011. https://doi.org/10.3233/978-1-60750-822-9-84.

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This overview paper discusses the use of laboratory testing in conjunction with in situ determination of reference parameters as a step forward to have consistent analyses of the behaviour of geotechnical constructions. In the first part of the paper, the key role of those reference properties, such as the elastic stiffness values obtained in field conditions at repose stress state, is highlighted. By comparing these values with those determined in laboratory reconditioned samples, their “undisturbed” conditions are evaluated and the reliability of advanced laboratory techn
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Conference papers on the topic "Offshore in-situ measurements"

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Strømmen, R. D., H. Osvoll, and W. Keim. "Computermodeling and In-Situ Current Density Measurements Prove a Need for Revision of Offshore CP Design Criteria." In CORROSION 1986. NACE International, 1986. https://doi.org/10.5006/c1986-86297.

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Abstract During recent years there has been a trend towards development and application of current density monitoring equipment in combination with potential measurements on the North Sea structures. In the same period there has also been a strong development of numerical methods for computer modeling of offshore cathodic protection systems. This paper presents results obtained with such modern techniques in monitoring of North Sea platforms. In particular the results demonstrates that the current density requirements for CP in the North Sea are considerably lower than normally anticipated. It
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Wang, Y., J. A. Wharton, J. Downes, and R. A. Shenoi. "Marine Structural Integrity Subject to Mechano-electrochemical Induced Corrosion." In CORROSION 2017. NACE International, 2017. https://doi.org/10.5006/c2017-09656.

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Abstract Carbon steel marine platforms, including ships and offshore structures, are at high risk of corrosion due to the combination of aggressive seawater environment, corrosive cargoes and constantly changing loading conditions. In particular, the combined influence of mechanical and electrochemical effects (which is often termed mechano-electrochemistry) has gained increasing attention over the last decade. Although various experiments, along with theoretical/empirical expressions, have been proposed to establish the relationship between stress/strain and the corrosion behavior, there are
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Asher, J., T. W. Conlon, B. C. Tofield, S. Sugden, and P. F. Lawrence. "Experience of Plant Corrosion Monitoring by Thin Layer Activation." In CORROSION 1986. NACE International, 1986. https://doi.org/10.5006/c1986-86131.

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Abstract A new technique for plant corrosion monitoring, Thin Layer Activation (TLA), is described. Specific trials have been carried out to develop TLA for corrosion monitoring (CM) in the offshore oil industry. Two development trials are described. In the first, standard weight-loss coupons, augmented by TLA, were installed in production wellheads and retrieved for laboratory analysis of corrosion by activity measurements; the second was a trial, on a water treatment plant, of a TLA corrosion monitor instrument system where in situ results are compared with other CM instruments operating on
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Ballard, Jean-Christophe, and Richard Jewell. "Observations of pipe-soil response from in-situ measurements." In Offshore Technology Conference. Offshore Technology Conference, 2013. http://dx.doi.org/10.4043/24154-ms.

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Jing, Xu-Dong, Alisdair Gillespie, and B. M. Trewin. "Resistivity Index From Non-Equilibrium Measurements Using Detailed In-Situ Saturation Monitoring." In Offshore Europe. Society of Petroleum Engineers, 1993. http://dx.doi.org/10.2118/26798-ms.

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Naylor, P., N. C. Sargent, A. P. Tilsed, and M. D. Frorup. "Oil Relative Permeability for Gravity Drainage Based on In-Situ Saturation Measurements." In Offshore Europe. Society of Petroleum Engineers, 1991. http://dx.doi.org/10.2118/23101-ms.

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Sharma, Neha, Jill S. Storie, Kelsey M. Obenour, Michael J. Leber, and Ashwanth Srinivasan. "Loop Current Hyperactivity: Analysis of In Situ Measurements in the Gulf of Mexico." In Offshore Technology Conference. Offshore Technology Conference, 2016. http://dx.doi.org/10.4043/27229-ms.

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Taboada, Victor Manuel, Shuang Cindy Cao, Diego Cruz roque, and Procoro Barrera Nabor. "Assessing Small-Strain Shear Modulus Based On In Situ Seismic Measurements in Bay of Campeche Sand." In Offshore Technology Conference. OTC, 2023. http://dx.doi.org/10.4043/32583-ms.

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Abstract A database with in situ measurements of shear wave velocity (VS), cone tip resistance (qc), and basic soil properties of sand has been established from fifteen offshore geotechnical investigations performed in the Bay of Campeche. VS values were obtained from P-S logging. The database was tailored to develop empirical correlations for small-strain shear modulus (Gmax) based on qc (or relative density), void ratio, and effective stress. Three empirical correlations were developed to determine Gmax based on: 1) void ratio, effective vertical stress, and coefficient of lateral earth pres
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Tjelta, T. I., A. W. W. Tieges, F. P. Smits, J. M. Geise, and T. A. Lunne. "In-Situ Density Measurements by Nuclear Backscatter for an Offshore Soil Investigation." In Offshore Technology Conference. Offshore Technology Conference, 1985. http://dx.doi.org/10.4043/4917-ms.

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Teufel, L. W. "In Situ Stress Measurements In Inclined Holes In The North Sea: Application To Water Flooding And Enhanced Oil Recovery." In Offshore Europe. Society of Petroleum Engineers, 1985. http://dx.doi.org/10.2118/13986-ms.

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