【摘要】：為了研究地形斜坡對(duì)東海黑潮陸架坡折鋒穩(wěn)定性的影響,利用簡(jiǎn)化的線性原始方程,在一定背景流的情況下,主要從增長(zhǎng)率、相速度、空間結(jié)構(gòu)和能量方面分析海底地形斜坡變化對(duì)坡折鋒穩(wěn)定性的影響。模式結(jié)果表明,平底地形時(shí),擾動(dòng)的強(qiáng)度大且擾動(dòng)區(qū)域廣,但有地形斜坡時(shí),擾動(dòng)區(qū)域變窄,強(qiáng)度變?nèi)?地形對(duì)坡折鋒起穩(wěn)定性作用。通過(guò)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(dǎo)地位。實(shí)驗(yàn)分析得出,地形對(duì)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(guó)科學(xué)院海洋研究所;中國(guó)科學(xué)院海洋環(huán)流與波動(dòng)重點(diǎn)實(shí)驗(yàn)室;中國(guó)科學(xué)院大學(xué);中國(guó)石油大學(xué)(華東)理學(xué)院;
【基金】：國(guó)家自然科學(xué)基金重點(diǎn)項(xiàng)目(41430965);國(guó)家自然科學(xué)基金項(xiàng)目(41506020,41476019,11501571) 中央高�；究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)基金費(fèi)(16CX02011A)~~
【分類號(hào)】：P731.27

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