Boils and Turbulence in a Weakly Stratified Shallow Tidal Sea
Boils and Turbulence in a Weakly Stratified Shallow Tidal Sea
复制标题
弱分层浅潮海中的沸腾和湍流
DOI：
10.1175/2008jpo3931.1
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发表时间：
2008
影响因子：
3.5
通讯作者：
W. Smith
中科院分区：
文献类型：
--
作者：
S. Thorpe;J. Green;J. Simpson;T. Osborn;W. Smith
湍流测量是在爱尔兰海东部一个弱但可变分层的潮汐张力区域进行的，使用湍流传感器在快光悠悠（FLY）剖面仪上垂直剖面穿过水柱，在自主水下航行器（AUV） Autosub上水平剖面。在水深约43.5米的测量地点，潮汐流超过1米s - 1，造成从海底延伸到海面的湍流，其周期是以前观测到的潮汐周期的一半。随着潮流速度的增加，FLY和Autosub上的传感器测量到的增强湍流开始的时间是很一致的，它们的平均水平也是如此。海面上的沸点可以通过自主记录反向回声测深仪（ARIES II）进行识别，该仪器是一种双波束向上指向的侧扫声纳，安装在海床上的钻井平台上。沸点的平均水平尺寸约为25米。他们不断地……
Abstract Measurements of turbulence are made in a weakly but variably stratified region of tidal straining in the eastern Irish Sea using turbulence sensors profiling vertically through the water column on the Fast Light Yo-yo (FLY) profiler and horizontally on the Autonomous Underwater Vehicle (AUV) Autosub. The tidal currents exceed 1 m s−1 at the location of the measurements in water of a depth of about 43.5 m, and result in turbulence extending from the seabed to the surface with a cycle period that is half that of the tides, as previously observed. The time of onset of enhanced turbulence that is measured by the sensors on FLY and Autosub as the speed of tidal currents increases are in good agreement, as are their mean levels. Boils on the sea surface are identified using the Autonomously Recording Inverted Echo Sounder, version 2 (ARIES II), a two-beam upward-pointing side-scan sonar mounted on a rig resting on the seabed. The boils have mean horizontal dimensions of about 25 m. They are continually...