SAR observing large-scale nonlinear internal waves in the White Sea
SAR observing large-scale nonlinear internal waves in the White Sea
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DOI：
10.1016/j.rse.2014.02.017
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发表时间：
2014-05
影响因子：
13.5
通讯作者：
I. Kozlov;D. Romanenkov;A. Zimin;B. Chapron
中科院分区：
文献类型：
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作者：
I. Kozlov;D. Romanenkov;A. Zimin;B. Chapron
2007年至2011年夏季（5月至9月）期间，Envisat卫星搭载的高级合成孔径雷达（ASAR）在白色海上空采集的合成孔径雷达（SAR）图像汇编存档首次详细分析了白色海内波（IWs）的二维模式。毫无疑问，IW活动的主要区域是西南部的Gorlo海峡（GS）。从这个地区出现的IW包经常被观察到达到波峰长度可达200公里，并从其起源地传播数百公里。模型结果证实，大规模的IWs可以产生每个潮汐周期，并能够跨越整个海洋。正如所建议的，这些包的来源是由强烈的动力学的锋区的潮汐周期在当地复杂的底部。进一步揭示，这些大规模的IW级联成强烈的大振幅短IW包变浅的白色海陆架，显着影响垂直湍流交换和整体水文。
The compiled archive of synthetic aperture radar (SAR) images acquired by the Advanced SAR (ASAR) onboard the Envisat satellite over the White Sea during the extended summer periods (May–September) between 2007 and 2011, provides the first detailed analysis of 2-D patterns of internal waves (IWs) in the White Sea. Unambiguously, the primary region of IW activity is the southwestern (SW) Gorlo Strait (GS). IW packets emerging from this area are regularly observed to reach crest lengths up to 200 km, and also to propagate a few hundred kilometers from their origin. Model results confirm that large-scale IWs can be generated every tidal cycle and are able to cross the entire sea. As suggested, the source of these packets is governed by the intense dynamics of the frontal zone in the tidal cycle over local complex bottom. As further revealed, these large-scale IWs cascade into intense large-amplitude short IW packets on the shoaling White Sea shelf, significantly impacting vertical turbulent exchange and the overall hydrology.