Wind Effect on Flexural-Gravity Waves

The first navigators to encounter the Arctic and Antartic ice margins rapidly became aware the penetration of ocean waves into ice-fields. These waves are termed as flexural-gravity waves (or coupled ice-ocean waves) whose dispersion and energy decay are determined by the character of the ice as wel...

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Bibliographic Details
Main Author: Chu, P. C.
Other Authors: NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF OCEANOGRAPHY
Format: Text
Language:English
Published: 1991
Subjects:
Snow
Ice and Permafrost
*ICE
*GRAVITY WAVES
*ARCTIC REGIONS
*OCEAN WAVES
FLEXURAL PROPERTIES
COMPRESSIVE PROPERTIES
VARIABLE PRESSURE
NAVIGATORS
PENETRATION
GROUP VELOCITY
WATER
BAROMETRIC PRESSURE
*ICE FIELDS
Arctic
Christensen
antartic*
Ice
permafrost
Online Access:http://www.dtic.mil/docs/citations/ADA530522
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA530522
Description
Summary:The first navigators to encounter the Arctic and Antartic ice margins rapidly became aware the penetration of ocean waves into ice-fields. These waves are termed as flexural-gravity waves (or coupled ice-ocean waves) whose dispersion and energy decay are determined by the character of the ice as well as the water beneath. The ultimate energy source for the flexural-gravity wave is the atmospheric pressure fluctuations generated by winds. However, this wind effect has not been included into the flexural-gravity wave theories (e.g., Squire, 1984; Wadhams et al, 1986; Liu and Mollo-Christensen, 1988). The main purpose of this paper is to show the importance of wind forcing on the flexural-gravity waves. Similar to ice compressive stress, the major wind effect on the flexural-gravity wave is to reduce the group velocity. In the area of low compress stress, the wave energy accumulation occurs in the area of high wind forcing. Eighth Conference on Atmospheric and Oceanic Waves and Stability, 14-18 Oct 1991, Denver, CO, American Meteorological Society, 265-268

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