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Remote sensing of ocean internal waves: An overview

机译:海洋内波遥感:概述

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摘要

Oceanic internal waves can form at the interface (pycnocline) between layers of different water density and propagate long distances along the pycnocline. Internal waves on continental shelves are important because they can attain large amplitudes and affect acoustic wave propagation, submarine navigation, nutrient mixing in the euphotic zone, sediment resuspension, cross-shore pollutant transport, coastal engineering, and oil exploration. Internal waves induce local currents that modulate surface wavelets and slicks, causing patterns of alternating brighter and darker bands to appear on the surface. The surface patterns can be mapped by satellites using synthetic aperture radar (SAR) or visible imagers. The objectives of this article are to discuss methods for remotely studying and mapping ocean internal waves and to present examples illustrating the application of satellite remote sensing.
机译:海洋内部波可以在不同水密度的水层之间的界面(比高ocline)处形成,并沿比高ococline传播很长的距离。大陆架上的内波很重要,因为它们可以达到很大的振幅并影响声波传播,海底航行,在富营养区的养分混合,沉积物重悬,跨岸污染物运输,海岸工程和石油勘探。内部波会感应局部电流,这些电流会调制表面小波和浮油,从而在表面上出现亮带和暗带交替出现的模式。可以使用人造孔径雷达(SAR)或可见光成像仪通过卫星绘制表面图案。本文的目的是讨论远程研究和绘制海洋内部波的方法,并提供示例说明卫星遥感的应用。

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