Secretary of the Navy Professor of Oceanography
The principal research effort has been towards understanding the high-frequency tail of the surface gravity wave spectrum, lengths of 2 cm to 60 cm; these a principally responsible for wind drag on water. Analysis was based on a unique data set from geophones and hydrophones at 5 1/2 km depth midway...
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| Format: | Text |
| Language: | English |
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2011
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| Online Access: | http://www.dtic.mil/docs/citations/ADA542691 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA542691 |
| Summary: | The principal research effort has been towards understanding the high-frequency tail of the surface gravity wave spectrum, lengths of 2 cm to 60 cm; these a principally responsible for wind drag on water. Analysis was based on a unique data set from geophones and hydrophones at 5 1/2 km depth midway between California and Hawaii. The measured spectral intensity around 10 Hz gives a more accurate measure of local winds than the standard satellite scatterometry. A spectral gap at the 30 Hz gravity to capillary transition offers new opportunities for spectral monitoring. We are making progress towards understanding the generation processes A continuing effort towards the acoustic monitoring of ocean processes has been directed at the polar ocean cavities sandwiched between the floating ice sheet and the sea floor. We are exploring a possible tomography experiment in the Ross Sea with the goal of better predicting polar ice melting processes and the associated global rise in sea level. |
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