地形斜坡对东海黑潮陆架坡折锋稳定性影响研究
发布时间：2018-08-24 18:02
【摘要】：为了研究地形斜坡对东海黑潮陆架坡折锋稳定性的影响,利用简化的线性原始方程,在一定背景流的情况下,主要从增长率、相速度、空间结构和能量方面分析海底地形斜坡变化对坡折锋稳定性的影响。模式结果表明,平底地形时,扰动的强度大且扰动区域广,但有地形斜坡时,扰动区域变窄,强度变弱,地形对坡折锋起稳定性作用。通过能量分析得出东海黑潮陆架坡折锋是正压和斜压的混合不稳定,其中斜压不稳定占主导地位。实验分析得出,地形对东海黑潮陆架坡折锋起稳定作用,斜坡增大,斜压不稳定和正压不稳定均减弱,斜压不稳定减弱更明显。
[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.
【作者单位】： 中国科学院海洋研究所;中国科学院海洋环流与波动重点实验室;中国科学院大学;中国石油大学(华东)理学院;
【基金】：国家自然科学基金重点项目(41430965);国家自然科学基金项目(41506020,41476019,11501571) 中央高校基本科研业务费专项基金费(16CX02011A)~~
【分类号】：P731.27
本文编号：2201606
[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.
【作者单位】： 中国科学院海洋研究所;中国科学院海洋环流与波动重点实验室;中国科学院大学;中国石油大学(华东)理学院;
【基金】：国家自然科学基金重点项目(41430965);国家自然科学基金项目(41506020,41476019,11501571) 中央高校基本科研业务费专项基金费(16CX02011A)~~
【分类号】：P731.27
【相似文献】
相关博士学位论文 前1条
1 陈超;基于过程的沿岸输沙及地形演变平面二维数学模型研究[D];天津大学;2016年
，本文编号：2201606
本文链接：https://www.wllwen.com/kejilunwen/haiyang/2201606.html
