报告人：谢皆烁副研究员（中科院南海海洋研究所）
时 间：2019年12月11日上午10：00-11:00
地点：华南数学应用与交叉研究中心学术报告厅111
题目：Studies of internal solitary wave interactions with mesoscale eddies in the northeastern South China Sea
摘要：
With the combined analysis of synthetic aperture radar image and satellite altimeter data collected in the northern SCS, we find one kind of unusual refraction phenomenon of internal solitary wave (ISW) with long front caused by the oceanic mesoscale eddy. Motivated by these satellite observations, we carry out numerical experiments using the fully nonhydrostatic and nonlinear MIT General Circulation Model (MITgcm) to investigate the three-dimensional (3D) evolution of large-amplitude ISW affected by an isolated cyclonic or anti-cyclonic eddy. The results show that the ISW front is refracted greatly by oceanic eddies. The ISW energy along the front will be scattered from (focused onto) the wave fragment where a convex (concave) pattern is formed, and the previously accumulated energy in the focusing region will be released gradually after the ISW propagates away from the eddies. The ISW amplitude is also modulated greatly by the eddies due to the energy redistribution along the front. The results show that the magnitude of the modulated ISW amplitude in the focusing region can reach twice the incident ISW amplitude,while in the scattering region it can be reduced by more than a half. These results therefore suggest that models with eddies included, especially the energetic eddies,could further improve the amplitude predictions in the northeastern SCS. The model results of the ISW refraction pattern is in qualitative agreement with that of the satellite observations in the northern SCS.
个人简介：
中科院南海海洋研究所，副研究员
1、 主要从事海洋内孤立波及近海水动力学研究，在物理海洋学国际顶尖刊物GRL、JPO、JGR等发表论文共计24篇，其中第一作者SCI论文9篇(包括JCR一区TOP刊物2篇、JCR二区TOP刊物3篇、JCR二区刊物2篇)、第二作者SCI论文12篇。
2、 参与撰写《10000个科学难题·海洋科学卷》及专著《内孤立波数值模式及其在南海区域的应用》。
3、 获奖励5项:
2015年获中国科学院院长优秀奖；2017年获中国科学院百篇优秀博士论文；2017年获海洋工程科学技术一等奖；2018年获评广州市珠江科技新星；2019年获评“南海新星”