Unveiling three-dimensional sea surface signatures caused by internal solitary waves:insights from the surface water ocean topography mission  

作　　者：Xudong ZHANG Xiaofeng LI 

机构地区：[1]Key Laboratory of Ocean Observation and Forecasting,Key Laboratory of Ocean Circulation and Waves,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China

出　　处：《Journal of Oceanology and Limnology》2024年第3期709-714,共6页海洋湖沼学报（英文）

基　　金：Supported by the National Key Research and Development Program of China(No.2022YFE0204600);the National Natural Science Foundation for Young Scientists of China(No.41906157)。

摘　　要：Internal solitary waves(ISW),characterized by large amplitude and long propagation distance,are widespread in global oceans.While remote sensing images have played an essential role in studying ISWs,they mainly exploit two-dimensional image information.However,with the launch of the surface water ocean topography(SWOT)satellite on December 16,2022,a unique opportunity has emerged to capture wide-swath three-dimensional ISW-induced sea surface information.In this study,we examine ISWs in the Andaman Sea using data from the Ka-band Radar Interferometer(KaRIN),a crucial sensor onboard SWOT.KaRIN not only provides backscattering satellite images but also employs synthetic aperture interferometry techniques to retrieve wide-swath two-dimensional sea surface height measurements.Our observations in the Andaman Sea revealed the presence of ISWs characterized by dark-bright strips and surface elevation solitons.The surface soliton has an amplitude of 0.32 m,resulting in an estimation of ISW amplitude of approximately 60 m.In contrast to traditional two-dimensional satellite images or nadir-looking altimetry data,the SWOT mission’s capability to capture threedimensional sea surface information represents a significant advancement.This breakthrough holds substantial promise for ISW studies,particularly in the context of ISW amplitude inversion.

关 键 词：internal solitary wave(ISW) surface water ocean topography(SWOT) ALTIMETER 

分 类 号：P715.7[天文地球—海洋科学]