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Artykuły w czasopismach na temat „Offshore in-situ measurements”

Autor: Grafiati
Data publikacji: 30 listopada 2024
Data aktualizacji: 31 lipca 2025

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1

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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2

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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7

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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8

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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9

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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10

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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11

Platis, Andreas, Marie Hundhausen, Astrid Lampert, Stefan Emeis, and Jens Bange. "The Role of Atmospheric Stability and Turbulence in Offshore Wind-Farm Wakes in the German Bight." Boundary-Layer Meteorology 182, no. 3 (2021): 441–69. http://dx.doi.org/10.1007/s10546-021-00668-4.

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AbstractAirborne meteorological in situ measurements as well as stationary measurements at the offshore masts FINO1 and FINO3 in the German Bight are evaluated in order to examine the hypothesis that the wake dissipation downstream of large offshore wind farms depends on atmospheric stability. A long-term study of the mast data for the years 2016 and 2017 demonstrates a clear dependence of stability on the wind direction. Stable conditions are predominantly expected during southerly winds coming from the land. The analysis of various stability and turbulence criteria shows that the lapse rate
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12

Volker, P. J. H., J. Badger, A. N. Hahmann, and S. Ott. "The Explicit Wake Parametrisation V1.0: a wind farm parametrisation in the mesoscale model WRF." Geoscientific Model Development Discussions 8, no. 4 (2015): 3481–522. http://dx.doi.org/10.5194/gmdd-8-3481-2015.

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Abstract. We describe the theoretical basis, implementation and validation of a new parametrisation that accounts for the effect of large offshore wind farms on the atmosphere and can be used in mesoscale and large-scale atmospheric models. This new parametrisation, referred to as the Explicit Wake Parametrisation (EWP), uses classical wake theory to describe the unresolved wake expansion. The EWP scheme is validated against filtered in situ measurements from two meteorological masts situated a few kilometres away from the Danish offshore wind farm Horns Rev I. The simulated velocity deficit i
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13

Volker, P. J. H., J. Badger, A. N. Hahmann, and S. Ott. "The Explicit Wake Parametrisation V1.0: a wind farm parametrisation in the mesoscale model WRF." Geoscientific Model Development 8, no. 11 (2015): 3715–31. http://dx.doi.org/10.5194/gmd-8-3715-2015.

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Abstract. We describe the theoretical basis, implementation, and validation of a new parametrisation that accounts for the effect of large offshore wind farms on the atmosphere and can be used in mesoscale and large-scale atmospheric models. This new parametrisation, referred to as the Explicit Wake Parametrisation (EWP), uses classical wake theory to describe the unresolved wake expansion. The EWP scheme is validated for a neutral atmospheric boundary layer against filtered in situ measurements from two meteorological masts situated a few kilometres away from the Danish offshore wind farm Hor
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14

Gandoin, Rémi, and Jorge Garza. "Underestimation of strong wind speeds offshore in ERA5: evidence, discussion and correction." Wind Energy Science 9, no. 8 (2024): 1727–45. http://dx.doi.org/10.5194/wes-9-1727-2024.

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Abstract. Offshore wind power plants have become an important element of the European electrical grid. Studies of metocean site conditions (wind, sea state, currents, water levels) form a key input to the design of these large infrastructure projects. Such studies rely heavily on reanalysis datasets which provide decades-long model time series over large areas. In turn, these time series are used for assessing wind, water levels and wave conditions and are thereby key inputs to design activities such as calculations of fatigue loads and extreme loads and platform elevations. In this article, w
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15

Kardakaris, Kimon, Ifigeneia Boufidi, and Takvor Soukissian. "Offshore Wind and Wave Energy Complementarity in the Greek Seas Based on ERA5 Data." Atmosphere 12, no. 10 (2021): 1360. http://dx.doi.org/10.3390/atmos12101360.

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In this work, 20 years (2000–2019) of ERA5 wave and wind data are analyzed and evaluated for the Greek Seas by means of in-situ measurements derived from the POSEIDON marine monitoring system. Four different statistical measures were used at six locations, where in-situ wind and wave measurements are available from oceanographic buoys. Furthermore, the ERA5 wind and wave datasets were utilized for the estimation of the available wind and wave energy potential for the Greek Seas, as well as for the assessment of complementarity and synergy between the two resources. In this respect, an event-ba
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16

Han, Wei-Chung, Yi-Wei Lu, and Sheng-Chung Lo. "Seismic prediction of soil distribution for the Chang-Bin offshore wind farm in the Taiwan Strait." Interpretation 8, no. 4 (2020): T727—T737. http://dx.doi.org/10.1190/int-2020-0020.1.

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Direct soil measurements are limited to borehole locations and are therefore sparse in the oceans. To effectively characterize the soil distributions for the Chang-Bin offshore wind farm, which is an area with the greatest wind energy potential in the Taiwan Strait, we have developed a workflow to predict the soil distribution in the subsurface based on integrated analysis of seismic data and borehole data. First, we characterize the key seismic units and their seismic response in order to understand the regional stratigraphy. Then, we correlate the soil types to each stratigraphic unit as the
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17

Khachatrian, Eduard, Patricia Asemann, Lihong Zhou, Yngve Birkelund, Igor Esau, and Benjamin Ricaud. "Exploring the Potential of Sentinel-1 Ocean Wind Field Product for Near-Surface Offshore Wind Assessment in the Norwegian Arctic." Atmosphere 15, no. 2 (2024): 146. http://dx.doi.org/10.3390/atmos15020146.

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The exploitation of offshore wind resources is a crucial step towards a clean energy future. It requires an advanced approach for high-resolution wind resource evaluations. We explored the suitability of the Sentinel-1 Level-2 OCN ocean wind field (OWI) product for offshore wind resource assessments. The SAR data were compared to in situ observations and three reanalysis products: the global reanalysis ERA5 and two regional reanalyses CARRA and NORA3. This case study matches 238 scenes from 2022 for the Goliat station, an oil platform located 85 km northwest of Hammerfest in the Barents Sea, w
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18

Yildirir, Victoria, Eugen Rusu, and Florin Onea. "Wind Energy Assessments in the Northern Romanian Coastal Environment Based on 20 Years of Data Coming from Different Sources." Sustainability 14, no. 7 (2022): 4249. http://dx.doi.org/10.3390/su14074249.

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Based on the fact that the wind speed tends to increase as we go from onshore to offshore, the aim of this work is to perform an analysis of a Romanian coastal sector located near the Danube Delta. Over the course of 20 years (2001–2020), in situ observations and reanalysis data (ERA5 and MERRA-2) of the local wind conditions were evaluated from a meteorological and renewable point of view. This evaluation includes two onshore sites (Galati and Tulcea), one site located near the shoreline (Sulina) and also two offshore sites defined at 64 and 126 km from the coastline. From the comparison with
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19

Lampert, Astrid, Konrad Bärfuss, Andreas Platis, et al. "In situ airborne measurements of atmospheric and sea surface parameters related to offshore wind parks in the German Bight." Earth System Science Data 12, no. 2 (2020): 935–46. http://dx.doi.org/10.5194/essd-12-935-2020.

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Abstract. Between 6 September 2016 and 15 October 2017, meteorological measurement flights were conducted above the German Bight in the framework of the project WIPAFF (Wind Park Far Field). The scope of the measurements was to study long-range wakes with an extent larger than 10 km behind entire wind parks, and to investigate the interaction of wind parks and the marine atmospheric boundary layer. The research aircraft Dornier 128 of the Technische Universität (TU) Braunschweig performed in total 41 measurement flights during different seasons and different stability conditions. The instrumen
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20

Li, Xinba, Panagiotis Mitsopoulos, Yue Yin, and Malaquias Peña. "SARAL-AltiKa Wind and Significant Wave Height for Offshore Wind Energy Applications in the New England Region." Remote Sensing 13, no. 1 (2020): 57. http://dx.doi.org/10.3390/rs13010057.

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The SARAL-AltiKa dataset was evaluated for refined offshore wind energy resources assessment and potential metocean monitoring capability in the Southern New England region. Surface wind speed and Significant Wave Height (Hs) products were assessed with corresponding variables from buoy observations for 2014–2019. To increase the sample size, this study analyzed and applied an approach to collect data around the reference buoys beyond the satellite footprint at the expense of a bias increment. The study corroborated the accuracy of the SARAL-AltiKa measurements for the offshore area of interes
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Dudley, John W., Arjan van der Linden, and Kok Gin Mah. "Predicting Accelerating Subsidence Above The Highly Compacting Luconia Carbonate Reservoirs, Offshore Sarawak Malaysia." SPE Reservoir Evaluation & Engineering 12, no. 01 (2009): 104–15. http://dx.doi.org/10.2118/109190-pa.

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Summary Sarawak Shell Berhad has a number of offshore gas fields that produce from the Luconia carbonate formation, which can exhibit high-compressibility pore-collapse deformation. Recent accelerated subsidence has been observed at several of these fields, which extrapolates to final subsidence values well above previous estimates. This paper describes a geomechanical study involving core work to determine if the Luconia formation compressibility is sensitive to brine flow from the rising aquifer and a 3D geomechanical finite-element model developed to predict future subsidence and lateral mo
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22

Henkel, Maximilian, Wout Weijtjens, and Christof Devriendt. "Fatigue Stress Estimation for Submerged and Sub-Soil Welds of Offshore Wind Turbines on Monopiles Using Modal Expansion." Energies 14, no. 22 (2021): 7576. http://dx.doi.org/10.3390/en14227576.

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The design of monopile foundations for offshore wind turbines is most often driven by fatigue. With the foundation price contributing to the total price of a turbine structure by more than 30%, wind farm operators seek to gain knowledge about the amount of consumed fatigue. Monitoring concepts are developed to uncover structural reserves coming from conservative designs in order to prolong the lifetime of a turbine. Amongst promising concepts is a wide array of methods using in-situ measurement data and extrapolating these results to desired locations below water surface and even seabed using
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Shimizu, T., Y. Yamamoto, and N. Tenma. "Methane-Hydrate-Formation Processes in Methane/Water Bubbly Flows." SPE Journal 22, no. 03 (2016): 746–55. http://dx.doi.org/10.2118/176156-pa.

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Summary Offshore natural-gas production from methane-hydrate (MH) reservoirs has received considerable attention. In this study, the offshore production method is briefly described, followed by the flow loop experiments performed to investigate the formation processes of MH in methane-in-water bubbly flows. Transient processes of phase transformation are characterized by phase paths, flow morphologies, pump heads, and in-situ particle-size measurements. It is realized that an MH slurry is generated by MH shells covering unconverted bubbles, whereas it can be transformed into a colloidal flow w
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24

Colgan, William, Agnes Wansing, Kenneth Mankoff, et al. "Greenland Geothermal Heat Flow Database and Map (Version 1)." Earth System Science Data 14, no. 5 (2022): 2209–38. http://dx.doi.org/10.5194/essd-14-2209-2022.

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Abstract. We compile and analyze all available geothermal heat flow measurements collected in and around Greenland into a new database of 419 sites and generate an accompanying spatial map. This database includes 290 sites previously reported by the International Heat Flow Commission (IHFC), for which we now standardize measurement and metadata quality. This database also includes 129 new sites, which have not been previously reported by the IHFC. These new sites consist of 88 offshore measurements and 41 onshore measurements, of which 24 are subglacial. We employ machine learning to synthesiz
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Woo, Hye-Jin, and Kyung-Ae Park. "Inter-Comparisons of Daily Sea Surface Temperatures and In-Situ Temperatures in the Coastal Regions." Remote Sensing 12, no. 10 (2020): 1592. http://dx.doi.org/10.3390/rs12101592.

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In this study, seven, global, blended, sea surface temperature (SST) analyses, including Operational SST and Sea Ice Analysis (OSTIA), Canadian Meteorological Centre (CMC) analysis, Optimum Interpolation SST (OISST), Remote Sensing System (REMSS) analysis, Multi-scale Ultra-high Resolution SST (MURSST), Merged Satellite and In situ Data Global Daily SST (MGDSST), and Geo-Polar Blended SST (Blended SST) were conducted. In-situ temperature measurements were used for the years 2014–2018, from 35 narrowly-spaced buoys distributed along the Korean Peninsula coast, to investigate how well the SST an
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Isaac, George A., Terry Bullock, Jennifer Beale, and Steven Beale. "Characterizing and Predicting Marine Fog Offshore Newfoundland and Labrador." Weather and Forecasting 35, no. 2 (2020): 347–65. http://dx.doi.org/10.1175/waf-d-19-0085.1.

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Abstract As several review papers have concluded, marine fog is imperfectly characterized, and quantitative visibility forecasts are difficult to produce accurately. Some unique measurements have been made offshore Newfoundland and Labrador of the climatology of occurrence and the microphysical characteristics of marine, or open-ocean, fog. Based on measurements made at an offshore installation over 21 years, the percent of time with visibilities less than 0.5 n mi or approximately 1 km (1 n mi ≈ 1.85 km) reaches 45% in July, with a low of about 5% during the winter. The occurrence of fog is m
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27

Di, Sheng Jie, Ming Yuan Wang, Zhi Gang Shan, and Hai Bo Jia. "Soil Liquefaction Evaluation of Offshore Site Based on In Situ Shear Wave Velocity Measurements." Applied Mechanics and Materials 405-408 (September 2013): 470–73. http://dx.doi.org/10.4028/www.scientific.net/amm.405-408.470.

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A procedure for evaluating liquefaction resistance of soils based on the shear wave velocity measurements is outlined in the paper. The procedure follows the general formal of the Seed-Idriss simplified procedure. In addition, it was developed following suggestions from industry, researchers, and practitioners. The procedure correctly predicts moderate to high liquefaction potential for over 95% of the liquefaction case histories. The case study for the site of offshore wind farm in Jiangsu province is provided to illustrate the application of the proposed procedure. The feature of the soils a
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Versteijlen, W. G., K. N. van Dalen, A. V. Metrikine, and L. Hamre. "Assessing the small-strain soil stiffness for offshore wind turbines based on in situ seismic measurements." Journal of Physics: Conference Series 524 (June 16, 2014): 012088. http://dx.doi.org/10.1088/1742-6596/524/1/012088.

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Afolabi, Lateef Adesola, Sara Russo, Carlo Lo Re, et al. "Underestimation of Wave Energy from ERA5 Datasets: Back Analysis and Calibration in the Central Tyrrhenian Sea." Energies 18, no. 1 (2024): 3. https://doi.org/10.3390/en18010003.

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Characterizing wave climate is crucial for coastal and offshore engineering applications. Reanalysis models, such as ERA5, are increasingly used due to their efficiency and lower costs compared to in situ measurements. However, their accuracy has not been thoroughly examined. This study addresses this gap by calibrating wave data from the ERA5 dataset with the available years of measurements from wave buoys in the Central Mediterranean Sea, specifically near Ponza, Cetraro, and Civitavecchia. A calibration approach was developed to adjust ERA5 wave data by aligning the model predictions closel
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Ye, Haijun, Junmin Li, Bo Li, et al. "Evaluation of CFOSAT Scatterometer Wind Data in Global Oceans." Remote Sensing 13, no. 10 (2021): 1926. http://dx.doi.org/10.3390/rs13101926.

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The China-France Oceanography SATellite (CFOSAT), launched on 29 October 2018, is a joint mission developed by China and France. To evaluate the CFOSAT wind product, L2B swath data with a spatial resolution of 25 × 25 km were compared with in situ measurements between December 2018 and December 2020. The in situ measurements were collected from 217 buoys. All buoy winds were adjusted to 10 m height using a simple logarithmic correction method. The temporal and spatial separations between the CFOSAT and in situ measurements were restricted to less than 30 min and 0.25°. The results indicate tha
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Delauney, L., C. Compère, and M. Lehaitre. "Biofouling protection for marine environmental sensors." Ocean Science 6, no. 2 (2010): 503–11. http://dx.doi.org/10.5194/os-6-503-2010.

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Abstract. These days, many marine autonomous environment monitoring networks are set up in the world. These systems take advantage of existing superstructures such as offshore platforms, lightships, piers, breakwaters or are placed on specially designed buoys or underwater oceanographic structures. These systems commonly use various sensors to measure parameters such as dissolved oxygen, turbidity, conductivity, pH or fluorescence. Emphasis has to be put on the long term quality of measurements, yet sensors may face very short-term biofouling effects. Biofouling can disrupt the quality of the
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Delauney, L., C. Compère, and M. Lehaitre. "Biofouling protection for marine environmental sensors." Ocean Science Discussions 6, no. 3 (2009): 2993–3018. http://dx.doi.org/10.5194/osd-6-2993-2009.

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Abstract. These days, many marine autonomous environment monitoring networks are set up in the world. These systems take advantage of existing superstructures such as offshore platforms, lightships, piers, breakwaters or are placed on specially designed buoys or underwater oceanographic structures. These systems commonly use various sensors to measure parameters such as dissolved oxygen, turbidity, conductivity, pH or fluorescence. Emphasis has to be put on the long term quality of measurements, yet sensors may face very short-term biofouling effects. Biofouling can disrupt the quality of the
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Macini, Paolo, and Ezio Mesini. "Measuring Reservoir Compaction Through Radioactive Marker Technique." Journal of Energy Resources Technology 124, no. 4 (2002): 269–75. http://dx.doi.org/10.1115/1.1506700.

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Radioactive Marker Technique (RMT), an in-situ method to measure reservoir rock compaction and to evaluate uniaxial compressibility coefficients Cm, is examined here. Recent field applications seems to confirm that RMT-derived Cm’s match with sufficient precision with those calculated from land subsidence observed over the field by means of geodetic surveys, but are not always in good agreement with those derived from lab measurements. In particular, here is reported an application of RMT in the Italian Adriatic offshore, which highlights the discrepancies of Cm’s measurements from lab and RMT
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Hauge, Vera Louise, and Odd Kolbjørnsen. "Bayesian inversion of gravimetric data and assessment of CO2 dissolution in the Utsira Formation." Interpretation 3, no. 2 (2015): SP1—SP10. http://dx.doi.org/10.1190/int-2014-0193.1.

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Offshore gravimetric monitoring has been introduced as a complement to seismic monitoring of fields with moving fluids. The Sleipner field in the North Sea is a fully operational carbon capture and storage facility, where [Formula: see text] is injected for storage. Gravimetric measurements are one of the geophysical monitoring methods applied, and the data have been used to estimate the in situ density and dissolution of the [Formula: see text]. We defined a Bayesian inversion of gravimetric data, and we used this to analyze gravimetric data at Sleipner field. In our approach, we included spa
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35

Hatfield, Daniel, Charlotte Bay Hasager, and Ioanna Karagali. "Vertical extrapolation of Advanced Scatterometer (ASCAT) ocean surface winds using machine-learning techniques." Wind Energy Science 8, no. 4 (2023): 621–37. http://dx.doi.org/10.5194/wes-8-621-2023.

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Abstract. The increasing demand for wind energy offshore requires more hub-height-relevant wind information, while larger wind turbine sizes require measurements at greater heights. In situ measurements are harder to acquire at higher atmospheric levels; meanwhile the emergence of machine-learning applications has led to several studies demonstrating the improvement in accuracy for vertical wind extrapolation over conventional power-law and logarithmic-profile methods. Satellite wind retrievals supply multiple daily wind observations offshore, however only at 10 m height. The goal of this stud
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Armstrong, M. A., M. Ravasio, W. G. Versteijlen, D. J. Verschuur, A. V. Metrikine, and K. N. van Dalen. "Seismic inversion of soil damping and stiffness using multichannel analysis of surface wave measurements in the marine environment." Geophysical Journal International 221, no. 2 (2020): 1439–49. http://dx.doi.org/10.1093/gji/ggaa080.

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SUMMARY Determination of soil material damping is known to be difficult and uncertain, especially in the offshore environment. Using an advanced inversion methodology based on multichannel spectral analysis, Scholte and Love wave measurements are used to characterize subsea soil from a North Sea site. After normalization, a determinant-based objective function is used in a genetic algorithm optimization to estimate the soil shear modulus. The inverted shear-modulus profile is comparable to previously published results for the same data, although a higher degree of certainty is achieved in the
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France, James L., Prudence Bateson, Pamela Dominutti, et al. "Facility level measurement of offshore oil and gas installations from a medium-sized airborne platform: method development for quantification and source identification of methane emissions." Atmospheric Measurement Techniques 14, no. 1 (2021): 71–88. http://dx.doi.org/10.5194/amt-14-71-2021.

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Abstract. Emissions of methane (CH4) from offshore oil and gas installations are poorly ground-truthed, and quantification relies heavily on the use of emission factors and activity data. As part of the United Nations Climate & Clean Air Coalition (UN CCAC) objective to study and reduce short-lived climate pollutants (SLCPs), a Twin Otter aircraft was used to survey CH4 emissions from UK and Dutch offshore oil and gas installations. The aims of the surveys were to (i) identify installations that are significant CH4 emitters, (ii) separate installation emissions from other emissions usi
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38

Sun, Miaojun, Zhigang Shan, Wei Wang, et al. "Development of an Underwater Adaptive Penetration System for In Situ Monitoring of Marine Engineering Geology." Sensors 24, no. 17 (2024): 5563. http://dx.doi.org/10.3390/s24175563.

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In recent years, offshore wind farms have frequently encountered engineering geological disasters such as seabed liquefaction and scouring. Consequently, in situ monitoring has become essential for the safe siting, construction, and operation of these installations. Current technologies are hampered by limitations in single-parameter monitoring and insufficient probe-penetration depth, hindering comprehensive multi-parameter dynamic monitoring of seabed sediments. To address these challenges, we propose a foldable multi-sensor probe and establish an underwater adaptive continuous penetration s
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39

Filipot, J. F., P. Guimaraes, F. Leckler, et al. "La Jument lighthouse: a real-scale laboratory for the study of giant waves and their loading on marine structures." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 377, no. 2155 (2019): 20190008. http://dx.doi.org/10.1098/rsta.2019.0008.

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This paper presents results from an experiment designed to improve the understanding of the relationship between extreme breaking waves and their mechanical loading on heritage offshore lighthouses. The experiment, conducted at La Jument, an iconic French offshore lighthouse, featured several records of wave, current and structure accelerations acquired during severe storm conditions, with individual waves as high as 24 m. Data analysis focuses on a storm event marked by a strong peak in the horizontal accelerations measured inside La Jument. Thanks to stereo-video wave measurements synchroniz
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40

Cervelli, G., A. Basit, L. Gambarelli, et al. "Unlocking the potential of offshore wind energy through an AI approach based on satellite insights." QualEnergia Science, no. 1 (2025): 97. https://doi.org/10.63111/qes-2025.1.0012.

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The Mediterranean Sea holds strategic potential for offshore wind energy essential to decarbonization. However, exploiting this potential requires high-quality, long-term metocean data to support wind farm planning, installation, and operation. The Mediterranean’s distinctive geography, including its islands, archipelagos, and jagged coastlines, complicates the acquisition of accurate metocean information. While in-situ sensors provide high-accuracy data, they lack sufficient spatial and temporal coverage, and traditional numerical models often lack the resolution needed for detailed environme
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Stuyts, Bruno, Wout Weijtjens, Carlos Sastre Jurado, Christof Devriendt, and Anis Kheffache. "A Critical Review of Cone Penetration Test-Based Correlations for Estimating Small-Strain Shear Modulus in North Sea Soils." Geotechnics 4, no. 2 (2024): 604–35. http://dx.doi.org/10.3390/geotechnics4020033.

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The geotechnical characterisation of offshore wind farm sites requires measurement or estimation of the small-strain shear stiffness Gmax of the subsoil. This parameter can be derived from shear wave velocity Vs measurements if the bulk density of the soil is known. Since direct measurements of Vs are generally not available at all foundation locations in a wind farm, correlations with cone penetration test (CPT) results are often used to determine location-specific stiffness parameters for foundation design. Existing correlations have mostly been calibrated to onshore datasets which may not c
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42

Schmidt, Mark, Peter Linke, and Daniel Esser. "Recent Development in IR Sensor Technology for Monitoring Subsea Methane Discharge." Marine Technology Society Journal 47, no. 3 (2013): 27–36. http://dx.doi.org/10.4031/mtsj.47.3.8.

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AbstractRecently developed methane sensors, based on infrared (IR) absorption technology, were successfully utilized for subsea methane release measurements. Long-term investigation of methane emissions (fluid flux determination) from natural methane seeps in the Hikurangi Margin offshore New Zealand were performed by using seafloor lander technology. Small centimeter-sized seep areas could be sampled at the seafloor by video-guided lander deployment. In situ sensor measurements of dissolved methane in seawater could be correlated with methane concentrations measured in discrete water samples
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43

Wang, Bin, Shan Gao, Yan Qu, Haoyang Yin, and Zhenju Chuang. "Mechanism of Phase-Locked Ice Crushing against Offshore Structures." Journal of Marine Science and Engineering 11, no. 4 (2023): 868. http://dx.doi.org/10.3390/jmse11040868.

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This paper addresses a detailed analysis of the ice–structure interaction process of the phase-locked ice crushing (PLC) against offshore structures. Directly measured ice load, structure response data, and in situ observation from the field measurements on the Molikpaq lighthouse and jacket platform were used in the study. This paper summarizes a new ductile damage-collapse (DDC) failure mechanism for the PLC process. The DDC mechanism shows that the ice failure is a discrete ductile crushing process rather than a ductile–brittle transition process. The analysis identifies that the ice has a
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44

SOUKISSIAN, T. H., and A. M. PROSPATHOPOULOS. "The Errors-in-Variables approach for the validation of the WAM wave model in the Aegean Sea." Mediterranean Marine Science 7, no. 1 (2006): 47. http://dx.doi.org/10.12681/mms.177.

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In previous studies, wave fi elds from the 3rd-generation wave model WAM-Cycle 4 have been validated by using in situ buoy measurements in the Aegean Sea within the framework of the POSEIDON project; however, limitations of the data sets, concerning mainly the short distance of the buoys from the shore and the short length of the data, render those validation studies incomplete. In this work, signifi cant wave height forecasts obtained from WAM-Cycle 4 wave model are validated by means of TOPEX/Poseidon (T/P) data in specifi c offshore locations in the central part of the North Aegean Sea. The
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45

Xu, Jingwei, Huanping Wu, Xiefei Zhi, et al. "Validation of Multisource Altimeter SWH Measurements for Climate Data Analysis in China’s Offshore Waters." Remote Sensing 16, no. 12 (2024): 2162. http://dx.doi.org/10.3390/rs16122162.

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Climate data derived from long-term, multisource altimeter significant wave height (SWH) measurements are more valuable than those obtained from a single altimeter source. Such data facilitate exploration of long-term air–sea momentum transfer and more comprehensive investigation of weather system dynamics processes over the ocean. Despite the deployment of the first satellite in the Chinese Haiyang-2 (HY-2) series more than 12 years ago, validation and integration of SWH data from China’s offshore waters, derived using Chinese altimeters, have been limited. This study constructed a high-resol
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46

Morgan, Eugene C., Maarten Vanneste, Isabelle Lecomte, Laurie G. Baise, Oddvar Longva, and Brian McAdoo. "Estimation of free gas saturation from seismic reflection surveys by the genetic algorithm inversion of a P-wave attenuation model." GEOPHYSICS 77, no. 4 (2012): R175—R187. http://dx.doi.org/10.1190/geo2011-0291.1.

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Many previously proposed methods of estimating free gas saturation from seismic survey data rely on calibration to invasively collected, in situ measurements. Typically, such in situ measurements are used to parameterize or calibrate rock-physics models, which can then be applied to seismic data to achieve saturation estimates. We tested a technique for achieving estimates of the spatial distribution of gas saturation solely from shipboard seismic surveys. We estimated the quality factor from seismic reflection surveys using the spectral ratio method, and then inverted a mesoscopic-scale P-wav
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Saffer, D. M., P. B. Flemings, D. Boutt, et al. "In situ stress and pore pressure in the Kumano Forearc Basin, offshore SW Honshu from downhole measurements during riser drilling." Geochemistry, Geophysics, Geosystems 14, no. 5 (2013): 1454–70. http://dx.doi.org/10.1002/ggge.20051.

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Taboada Urtuzuástegui, Víctor Manuel, Francisco Alonso Flores-López, Diego Cruz Roque, et al. "DYNAMIC PROPERTIES OF SAND FOR EARTHQUAKE RESPONSE ANALYSIS IN THE BAY OF CAMPECHE." Revista de Ingeniería Sísmica, no. 109 (December 30, 2022): 69–91. http://dx.doi.org/10.18867/ris.109.615.

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The Bay of Campeche is located in a region of moderate to high seismic activity related to the active triple junction between the North American, Caribbean, and Cocos plate boundaries. Therefore, the fixed offshore platforms and subsea structures in the Bay of Campeche must be designed against earthquake loading. A database was developed of classification and index properties tests, in situ measurements of shear wave velocity (Vs) using downhole P-S suspension seismic velocity logging, in situ piezocone penetration tests, resonant column tests to characterize the shear modulus and material dam
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Taboada Urtuzuástegui, Víctor Manuel, Shuang Cindy Cao, Diego Cruz Roque, et al. "DYNAMIC PROPERTIES OF CLAY FOR EARTHQUAKE RESPONSE ANALYSIS IN THE BAY OF CAMPECHE." Revista de Ingeniería Sísmica, no. 109 (December 30, 2022): 47–68. http://dx.doi.org/10.18867/ris.109.596.

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The Bay of Campeche is located in a region of moderate to high seismic activity related to the active triple junction between the North American, Caribbean, and Cocos plate boundaries. Therefore, the fixed offshore platforms and subsea structures in the Bay of Campeche must be designed against earthquake loading. A database was developed of classification and index properties tests, in situ measurements of shear wave velocity using downhole P-S suspension seismic velocity logging, in situ piezocone penetration tests, resonant column tests to characterize the shear modulus and material damping
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Osadchiev, Alexander, Roman Sedakov, Alexandra Gordey, and Alexandra Barymova. "Internal Waves as a Source of Concentric Rings within Small River Plumes." Remote Sensing 13, no. 21 (2021): 4275. http://dx.doi.org/10.3390/rs13214275.

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This study is focused on concentric rings, which are regularly observed by remote sensing of small river plumes located in different regions worldwide. We report new aerial observations of these features obtained by quadcopters and supported by synchronous in situ measurements, which were collected during the recent field survey at the Bzyb river plume in the eastern part of the Black Sea. Joint analysis of remote sensing imagery and in situ data suggest that the observed concentric rings are surface manifestations of high-frequency internal waves generated in the vicinity of the river mouth.
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