Progress on oceanic sediment dynamic processes induced by nonlinear internal waves  

作　　者：Weihan Ruan Yanwei Zhang Danni Lyu Liuzhenyi Zhang Zhiyuan Zhuang 

机构地区：[1]State Key Laboratory of Marine Geology,Tongji University,Shanghai 200092,China

出　　处：《Acta Oceanologica Sinica》2025年第1期59-71,共13页海洋学报(英文版)

基　　金：The Interdisciplinary Joint Research Projects of Tongji University,Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai).

摘　　要：Nonlinear internal waves(NLIWs)exhibit robust dynamic submesoscale motions,connecting large-scale tides to smallscale shear instabilities in the ocean.Previous studies have mainly focused on their generation mechanisms and evolution along their paths.Considering their global distribution resulting from the primary origin in tide-topography interaction,there is an increasing cross-disciplinary interest in understanding how these energetic and ubiquitous NLIWs contribute to sediment redistribution in the ocean.This paper presents fundamental theories on NLIWs and comprehensively reviews triggering mechanisms,different types of instability,and sediment responses by summarizing recent theoretical parameterizations,numerical simulations,laboratory experiments,and in-situ observations.We specifically focus on elucidating various types of instability along with their impact on sediment dynamic processes.Finally,we outline several unresolved issues that require further exploration for a quantitative investigation into NLIWinduced sediment transfer in the ocean.

关 键 词：nonlinear internal waves INSTABILITY sediment resuspension and transport in-situ observations 

分 类 号：P731.2[天文地球—海洋科学]