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Keywords: spectra
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Proceedings Papers

Paper presented at the Offshore Technology Conference, August 16–19, 2021
Paper Number: OTC-31166-MS
... is often true in the case of wave statistics, assumptions have to be made regarding parameters such as spectrum shape or wave spreading. However, using the full description of wave energy spectra, if available, can be a way of reducing uncertainties and removing unnecessary assumptions in such analysis...
Proceedings Papers

Paper presented at the Offshore Technology Conference, August 16–19, 2021
Paper Number: OTC-31049-MS
... at various sites, mostly covering calm weather conditions. upstream oil & gas radar doppler frequency spectra social responsibility detector coastal water fm noise filter offshore technology conference spectrum sustainability internal noise raw data filter footprint time series...
Proceedings Papers

Paper presented at the Offshore Technology Conference, August 16–19, 2021
... sets recorded at various sites, mostly covering calm weather conditions. upstream oil & gas radar doppler frequency spectra sustainable development frequency pulse-doppler radar noise height measurement sustainability internal noise raw data filter footprint time series social...
Proceedings Papers

Paper presented at the Offshore Technology Conference, August 16–19, 2021
Paper Number: OTC-31020-MS
..., reflects a random distribution of mode shapes that depend on the lateral geometry of the forcing, mixed layer depth, and stratification. subsea system amplitude coefficient downward energy propagation spectra propagation upstream oil & gas oscillation current profile inertial frequency...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2017
Paper Number: OTC-27582-MS
... monitoring have been highlighted. The vibrational properties of hydrocarbon molecules were modeled using Density Function Theory and results were correlated with Raman spectra. The speciation of gas mixtures containing C1 C4 hydrocarbons and concentration of vapor phase components were derived from Raman...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2017
Paper Number: OTC-27808-MS
... analyses. Both measured and analytical spectra generally exhibit peaks at similar frequencies. While the first analytical riser mode is clearly identified in the measured data, the analytical blow out preventer (BOP) stack/riser mode is not as evident in the measured data. Further, the measured peak close...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2016
Paper Number: OTC-27039-MS
... spectra for contiguous sea states at a location offshore Brazil, corresponding to a period of approximately 2 years into a number of clusters. We adopt the set comprised of cluster centroids only as representative sea states for efficient characterization of the environment and structural response. We...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2016
Paper Number: OTC-27140-MS
... Abstract The vertical spectral shape suggested by the main offshore codes does not reflect actual earthquake behavior. The problem is exacerbated in time history analysis, as the incorrect spectral shape leads to unrealistic scaling of records. Vertical spectra from codes are compared...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 2015
Paper Number: OTC-25694-MS
... spectral peaks in the CTW period range but they are several days longer than in the observations and too weak on the shelf. WANE underestimates the energy in the CTW frequency range on the shelf by an order of magnitude and shows no CTW frequency peak on the slope. characteristic spectra period...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 2015
Paper Number: OTC-25920-MS
... spectra amplitude spectra interpretation masoomzadeh streamer broadband-processed data reservoir characterization frequency reflection upstream oil & gas broadband processing woodburn offshore technology conference background trend Soubaras , R. , and R. Dowle , 2010...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 2015
Paper Number: OTC-25973-MS
..., to measure surface elevation profiles and the velocity beneath extreme crests. Focused wave groups representing the extreme events were generated at a given point in space and time. The input amplitude spectra for the flap-type wave maker were derived using Tromans’ NewWave theory which corresponds...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2012
Paper Number: OTC-23025-MS
... with a fully coupledconstitutive model. The direct method FE model consisted of a finite mesh ofnonlinear soil, nonlinear soil-pile interaction springs, piles, and tankcomponents. The FE model was shaken with a series of recorded earthquakemotions that were spectrally matched to the design spectra developed...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2012
Paper Number: OTC-23470-MS
... against real data as little published information of this typecurrently exists. wind speed tower base thrust force wave energy frequency range otc 23470 turbine jonkman renewable energy wind turbine concept model test spectra dynamic wind platform frequency sea state upstream oil...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2011
Paper Number: OTC-21610-MS
... to be towards southerly directions. wave energy upstream oil & gas correction cpp site reef amplification storm amplification factor refraction resolution significant wave height hindcast variation bathymetry seastate spectra otc 21610 simulation australia offshore technology...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 3–6, 2010
Paper Number: OTC-20869-MS
... estimation. wave component wave spectra machine learning artificial intelligence gla dowr radar spectra spectrum upstream oil & gas instrument subsea system offshore technology conference buoy fatigue lifetime consumption floating production system significant wave height wave...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 2008
Paper Number: OTC-19583-MS
.... The seismic design criteria included development of site-specific seabed response spectra for different return periods for an initial set of response spectrum analysis followed by the development of acceleration time histories for use in the detailed non-linear soil-structure interaction model. The paper also...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2007
Paper Number: OTC-18933-MS
... configuration obc data air gun array otc 18933 acquisition system frequency source signature source array noise amplitude spectra configuration frequency content low frequency content streamer signature streamer data acoustic blanket reservoir characterization OTC 18933 Meeting...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2007
Paper Number: OTC-18620-MS
... height calculated by standard methods and observed deck damage ere considered. Freak waves due to unusual wave spectra were not observed at sites where individual waves were recorded. Much of the damage occurred on structures with small members so diffraction was not an issue. Calculations of the maximum...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2005
Paper Number: OTC-17740-MS
... and wave hindcast model, whether Ivan generated "freak" conditions that break the NTS/API gust factor relationships and wind spectra characterizations or the Forristall wave height and crest height distributions, and whether Ivan is, from a statistical standpoint, truly an "unexpected" event...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 3–6, 2004
Paper Number: OTC-16582-MS
... turbulences were measured in the basin. The results are presented. Concerning the waves, attention was given to not only the wave spectra but also to the wave group spectra. The Theme Structures were exposed to an API wind spectra. The procedure to adjust the wind spectra is described. The test set-up...

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