Estimation of wind drift current in the Soya Strait

Estimation of wind drift current in the Soya Strait
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宗谷海峡风漂移流的估算

DOI:
10.1007/s10872-015-0333-1
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发表时间:
2016
期刊:
J. Oceanogr
影响因子:
--
通讯作者:
and Y. Yoshikawa,
and Y. Yoshikawa,
中科院分区:
--
文献类型:
--
作者:
Zhang;W.;N. Ebuchi;Y. Fukamachi;and Y. Yoshikawa,

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2003年,在索亚(拉贝鲁斯)海峡周围部署了三个高频海洋雷达,以监测索亚暖流。高频雷达观测到的表层海流中含有风漂移分量,为了估计内部SWC,必须去除风漂移分量。风漂移参数,速度因子和转向角来自高频雷达测量的表面电流,由底部安装的声学多普勒流速剖面仪(ADCP)测量的垂直电流剖面,和风数据从日本气象厅(JMA)运行的数值天气分析系统从2006年10月1日至2008年7月24日。整个数据集(不包括2007年8月)的整体平均转向角和速度因子估计分别为28°和0.66%。没有显着的季节性变化是明显的风漂移参数。在去除风漂移估计从风与整体平均漂移参数,沿岸流速和海平面之间的日本海和鄂霍次克海的差异的相关系数从0.791提高到0.825。结果表明,冬季风海流的大小可达内海流大小的45%,夏季约为20%,表明风海流估算在该地区的重要性。
Three high-frequency (HF) ocean radars were deployed around the Soya (La Pérouse) Strait in 2003 to monitor the Soya Warm Current (SWC). Surface current observed by the HF radars contains a wind drift component, which must be removed in order to estimate the interior SWC. The wind drift parameters, speed factor and turning angle were derived from the surface current measured by the HF radars, the vertical current profile measured by a bottom-mounted acoustic Doppler current profiler (ADCP), and wind data from the numerical weather analysis system operated by the Japan Meteorological Agency (JMA) from October 1, 2006 to July 24, 2008. The ensemble-mean turning angle and speed factor from the entire dataset (excluding August 2007) were estimated to be 28° and 0.66 %, respectively. No significant seasonal variations were discernible in the wind drift parameters. After removal of the wind drift current estimated from the wind with the ensemble-mean drift parameters, the correlation coefficient between the along-shore current speed and sea level difference between the Sea of Japan and Sea of Okhotsk improved from 0.791 to 0.825. It was revealed that the magnitude of wind drift current reaches 45 % of that of the interior current in winter and approximately 20 % in summer, indicating the importance of wind drift current estimation in this region.
地表热通量日循环对风驱动流的影响
DOI: 10.1007/s10872-015-0328-y
发表时间: 2016
影响因子: 2.3
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DOI: --
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