Surface Wave Statistics and Spectra During High Sea State Conditions in the North Atlantic.
Surface wave data collected using an airborne laser profilometer during high sea state conditions are analyzed to produce statistical cumulants up to the fifth order and power spectra. Theoretically, the third cumulant, skewness, is directly proportional to the wind-wave significant slope. This rela...
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ftdtic:ADA109832 2023-05-15T17:31:18+02:00 Surface Wave Statistics and Spectra During High Sea State Conditions in the North Atlantic. McClain,C R Chen,D T Hart,W D NAVAL RESEARCH LAB WASHINGTON DC 1981-12-30 text/html http://www.dtic.mil/docs/citations/ADA109832 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA109832 en eng http://www.dtic.mil/docs/citations/ADA109832 APPROVED FOR PUBLIC RELEASE DTIC AND NTIS Physical and Dynamic Oceanography Lasers and Masers Fluid Mechanics *OCEAN WAVES SURFACE WAVES AIRBORNE WIND POWER SPECTRA LASERS PROFILOMETERS OCEANOGRAPHIC DATA MATHEMATICAL PREDICTION RADIO ALTIMETERS SLOPE DATA ACQUISITION SKEWNESS SEA STATES NORTH ATLANTIC OCEAN HEIGHT FINDING Laser profilometers Wind waves Wave spectra High sea states Swells(Marine) PE61153N PE62759N WU0928 Text 1981 ftdtic 2016-02-20T21:15:58Z Surface wave data collected using an airborne laser profilometer during high sea state conditions are analyzed to produce statistical cumulants up to the fifth order and power spectra. Theoretically, the third cumulant, skewness, is directly proportional to the wind-wave significant slope. This relationship is supported by wind-wave tank data, but little field data of this kind is available in the literature. Also, it has been suggested that if skewness can be derived from radar altimeter data, the significant slope would be computed and together with another altimeter product, the rms wave height, the wave spectra can be estimated using the Wallops Spectral Model (WSM). The results of this study indicate that the skewness relationship is valid for wind-wave dominated seas but as the swell contribution to rms wave height increases, the combined wave field skewness monotonically decreases below the predicted value. The WSM yields excellent reproductions of the wind-wave spectra even in multiple-peaked seas providing that the model inputs are properly determined for the wind-wave subfield. Finally the altimeter-WSM scheme should work reasonably well when the seas are wind-wave dominated provided that the altimeter can accurately measure skewness. More research on intermediate and swell dominated conditions is recommended. (Author) Text North Atlantic Defense Technical Information Center: DTIC Technical Reports database |
institution |
Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Physical and Dynamic Oceanography Lasers and Masers Fluid Mechanics *OCEAN WAVES SURFACE WAVES AIRBORNE WIND POWER SPECTRA LASERS PROFILOMETERS OCEANOGRAPHIC DATA MATHEMATICAL PREDICTION RADIO ALTIMETERS SLOPE DATA ACQUISITION SKEWNESS SEA STATES NORTH ATLANTIC OCEAN HEIGHT FINDING Laser profilometers Wind waves Wave spectra High sea states Swells(Marine) PE61153N PE62759N WU0928 |
spellingShingle |
Physical and Dynamic Oceanography Lasers and Masers Fluid Mechanics *OCEAN WAVES SURFACE WAVES AIRBORNE WIND POWER SPECTRA LASERS PROFILOMETERS OCEANOGRAPHIC DATA MATHEMATICAL PREDICTION RADIO ALTIMETERS SLOPE DATA ACQUISITION SKEWNESS SEA STATES NORTH ATLANTIC OCEAN HEIGHT FINDING Laser profilometers Wind waves Wave spectra High sea states Swells(Marine) PE61153N PE62759N WU0928 McClain,C R Chen,D T Hart,W D Surface Wave Statistics and Spectra During High Sea State Conditions in the North Atlantic. |
topic_facet |
Physical and Dynamic Oceanography Lasers and Masers Fluid Mechanics *OCEAN WAVES SURFACE WAVES AIRBORNE WIND POWER SPECTRA LASERS PROFILOMETERS OCEANOGRAPHIC DATA MATHEMATICAL PREDICTION RADIO ALTIMETERS SLOPE DATA ACQUISITION SKEWNESS SEA STATES NORTH ATLANTIC OCEAN HEIGHT FINDING Laser profilometers Wind waves Wave spectra High sea states Swells(Marine) PE61153N PE62759N WU0928 |
description |
Surface wave data collected using an airborne laser profilometer during high sea state conditions are analyzed to produce statistical cumulants up to the fifth order and power spectra. Theoretically, the third cumulant, skewness, is directly proportional to the wind-wave significant slope. This relationship is supported by wind-wave tank data, but little field data of this kind is available in the literature. Also, it has been suggested that if skewness can be derived from radar altimeter data, the significant slope would be computed and together with another altimeter product, the rms wave height, the wave spectra can be estimated using the Wallops Spectral Model (WSM). The results of this study indicate that the skewness relationship is valid for wind-wave dominated seas but as the swell contribution to rms wave height increases, the combined wave field skewness monotonically decreases below the predicted value. The WSM yields excellent reproductions of the wind-wave spectra even in multiple-peaked seas providing that the model inputs are properly determined for the wind-wave subfield. Finally the altimeter-WSM scheme should work reasonably well when the seas are wind-wave dominated provided that the altimeter can accurately measure skewness. More research on intermediate and swell dominated conditions is recommended. (Author) |
author2 |
NAVAL RESEARCH LAB WASHINGTON DC |
format |
Text |
author |
McClain,C R Chen,D T Hart,W D |
author_facet |
McClain,C R Chen,D T Hart,W D |
author_sort |
McClain,C R |
title |
Surface Wave Statistics and Spectra During High Sea State Conditions in the North Atlantic. |
title_short |
Surface Wave Statistics and Spectra During High Sea State Conditions in the North Atlantic. |
title_full |
Surface Wave Statistics and Spectra During High Sea State Conditions in the North Atlantic. |
title_fullStr |
Surface Wave Statistics and Spectra During High Sea State Conditions in the North Atlantic. |
title_full_unstemmed |
Surface Wave Statistics and Spectra During High Sea State Conditions in the North Atlantic. |
title_sort |
surface wave statistics and spectra during high sea state conditions in the north atlantic. |
publishDate |
1981 |
url |
http://www.dtic.mil/docs/citations/ADA109832 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA109832 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA109832 |
op_rights |
APPROVED FOR PUBLIC RELEASE |
_version_ |
1766128809879273472 |