發(fā)布時間：2018-05-02 13:46

  本文選題：舟山近海海域 + 海表溫度　； 參考：《上海海洋大學學報》2016年01期

【摘要】：利用2002-2013年期間的衛(wèi)星遙感海表溫度(SST)數(shù)據(jù)分析了舟山海域夏季上升流的時空特征,并結(jié)合同時期的海面風場數(shù)據(jù)探討了風對該海域夏季上升流的影響。對多年夏季月平均的SST進行經(jīng)驗正交函數(shù)(EOF)分解結(jié)果表明,7月份前兩個模態(tài)方差貢獻率分別為71.66%、16.55%,8月份前兩個模態(tài)方差貢獻率分別為87.03%和7.30%,并均通過了顯著性檢驗,舟山近海海域的上升流存在較為明顯的年際變化。相關分析顯示,經(jīng)向風速和SST異常存在顯著的負相關關系,即夏季盛行的西南風有利于上升流的發(fā)展。并且,艾克曼(Ekman)體積輸運計算結(jié)果表明,舟山海域7、8月份風生上升流的量級分別為3.0×10~(-5)m/s和1.5×10~(-5)m/s,7月上升流顯著強于8月,這與8月份觀測到的海表顯著低溫異常相關。
[Abstract]:Based on the satellite remote sensing sea surface temperature (SST) data from 2002 to 2013, the spatial and temporal characteristics of summer upwelling in Zhoushan sea area are analyzed, and the influence of the monsoon on the summer upwelling in Zhoushan sea area is discussed with the sea surface wind field data of the same period. The empirical orthogonal function (EOF) decomposition of the monthly average SST in summer shows that the contribution rates of the first two modes in July are 71.66 and 16.555.The contribution rates of the first two modes in August are 87.03% and 7.30%, respectively, and they have passed the significance test. There is obvious interannual variation of the upwelling in the coastal waters of Zhoushan. Correlation analysis shows that there is a significant negative correlation between meridional wind speed and SST anomaly, that is, the prevailing southwest wind in summer is conducive to the development of upwelling. Moreover, the calculation results of Ekman volume transport in Zhoushan sea area show that the order of wind upwelling in July and August is 3.0 脳 10~(-5)m/s and 1.5 脳 10 ~ (-5) m / s, respectively, and the upwelling in July is stronger than that in August, which is related to the apparent low temperature anomaly observed in August.
【作者單位】： 上海海洋大學海洋科學學院;上海海洋大學大洋漁業(yè)資源可持續(xù)利用省部共建教育部重點實驗室;
【基金】：上海市科委重點支撐項目(13230502000) 國家海洋局溢油鑒別與損害評估技術重點實驗室資助項目(D-8005-14-8003) 上海海洋大學博士科研啟動基金項目(A2-0302-14-300071)
【分類號】：P732.6
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本文編號：1834198