Characteristics of Wind–Wave Interaction During an Intense Extratropical Cyclogenesis

From November 2 to 5, 1996, an intense extratropical cyclone was near the National Data Buoy Center buoy 46035 in the Bering Sea. At the storm's extremes, the buoy measured minimum sea-level pressure (= 966.1 mbar), 10 m wind speed (= 28.2 m/s), peak gust (= 38.9 m/s), significant wave height (...

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Bibliographic Details
Published inJournal of coastal research Vol. 23; no. 5; pp. 1287 - 1291
Main Authors Hsu, S. A., Blanchard, Brian W.
Format Journal Article
LanguageEnglish
Published Fort Lauderdale Coastal Education and Research Foundation (CERF) 01.09.2007
Allen Press Inc
Subjects
Bering Sea
Bowen ratio
buoyancy length
Buoys
Cyclogenesis
Cyclones
Drag coefficient
Friction
friction velocity
gust factor
Gusts
Hurricanes
Marine
Meteorology
Ocean currents
Oceanography
RESEARCH PAPERS
roughness parameter
stability
Storms
wave age
Wave height
wave steepness
Waves
Wind
Wind speed
Wind velocity
Bering Sea
IN, Bering Sea
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Summary:From November 2 to 5, 1996, an intense extratropical cyclone was near the National Data Buoy Center buoy 46035 in the Bering Sea. At the storm's extremes, the buoy measured minimum sea-level pressure (= 966.1 mbar), 10 m wind speed (= 28.2 m/s), peak gust (= 38.9 m/s), significant wave height (= 15.4 m), and peak period (= 16.7 s). During this period, 41 hourly observations were recorded when the waves were not fully developed; these records are the subject of our detailed analysis. It is shown that the wind–pressure relation was governed by the cyclostrophic equation; stability was neutral (i.e., the logarithmic wind profile law is useful); the relation between dimensionless wave height and period as normalized by the wind speed and the friction velocity follows the formulas found in the literature. Further determination of the friction velocity using the gust factor concept is successful to incorporate both tropical and extratropical cyclones.
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ISSN:0749-0208
1551-5036
DOI:10.2112/05-0528.1