【摘要】：為了研究地形斜坡對東海黑潮陸架坡折鋒穩(wěn)定性的影響,利用簡化的線性原始方程,在一定背景流的情況下,主要從增長率、相速度、空間結構和能量方面分析海底地形斜坡變化對坡折鋒穩(wěn)定性的影響。模式結果表明,平底地形時,擾動的強度大且擾動區(qū)域廣,但有地形斜坡時,擾動區(qū)域變窄,強度變弱,地形對坡折鋒起穩(wěn)定性作用。通過能量分析得出東海黑潮陸架坡折鋒是正壓和斜壓的混合不穩(wěn)定,其中斜壓不穩(wěn)定占主導地位。實驗分析得出,地形對東海黑潮陸架坡折鋒起穩(wěn)定作用,斜坡增大,斜壓不穩(wěn)定和正壓不穩(wěn)定均減弱,斜壓不穩(wěn)定減弱更明顯。
[Abstract]:In order to study the influence of topographic slopes on the slope stability of the Kuroshio shelf in the East China Sea, the simplified linear primitive equation is used to analyze the growth rate and phase velocity under certain background flow. The influence of slope variation on slope stability is analyzed in terms of spatial structure and energy. The model results show that the disturbance intensity is large and the disturbance area is wide in flat bottom terrain, but the disturbance area becomes narrower and weaker when there is terrain slope, and the terrain plays a stabilizing role on the slope break front. The energy analysis shows that the slope break front of the Kuroshio continental shelf in the East China Sea is a mixture of baroclinic and baroclinic instability in which baroclinic instability dominates. The experimental results show that the topography plays a stabilizing role on the slope break of the Kuroshio shelf in the East China Sea, the slope increases, the baroclinic instability and baroclinic instability weaken, and the baroclinic instability weakens more obviously.
【作者單位】： 中國科學院海洋研究所;中國科學院海洋環(huán)流與波動重點實驗室;中國科學院大學;中國石油大學(華東)理學院;
【基金】：國家自然科學基金重點項目(41430965);國家自然科學基金項目(41506020,41476019,11501571) 中央高�；究蒲袠I(yè)務費專項基金費(16CX02011A)~~
【分類號】：P731.27

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本文編號：2201606