Two Kinds of Waves Causing the Resuspension of Deep-Sea Sediments:Excitation and Internal Solitary Waves  

作　　者：REN Yupeng TIAN Hao CHEN Zhiyuan XU Guohui LIU Lejun LI Yibing 

机构地区：[1]Key Laboratory of Submarine Geosciences and Prospecting Techniques,Ministry of Education,Ocean University of China,Qingdao 266100,China [2]Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering,Ocean University of China,Qingdao 266100,China [3]Key Laboratory of Marine Environment and Ecology,Ministry of Education,Ocean University of China,Qingdao 266100,China [4]First Institute of Oceanography,MNR,Qingdao 266061,China

出　　处：《Journal of Ocean University of China》2023年第2期429-440,共12页中国海洋大学学报（英文版）

基　　金：The research was supported by the National Natural Science Foundation of China(Nos.42206055,41976049,41720104001);the Taishan Scholar Project of Shandong Province(No.TS20190913);the Fundamental Research Funds for the Central Universities(No.202061028).

摘　　要：The resuspension of marine sediments plays a key role in the biogeochemical cycle and marine ecology system.Internal solitary waves are considered to be important driving forces of the resuspension of bottom sediments.In this paper,the movement of turbidity currents,the generation and the effects on the bottom bed of internal solitary waves and excitation waves are studied by flume tests and numerical simulations,and the sediment resuspension are analyzed.The results show that the excitation wave can lead to the resuspension of the bottom sediments under all the conditions,while the internal solitary wave can lead to the resuspension of the sediment only under some special conditions,such as high amplitude or large underwater slope.Under the experimental conditions,the change in the near-bottom velocity caused by the excitation wave is close to three times that of the internal solitary wave.

关 键 词：DEEP-SEA sediment resuspension internal solitary wave turbidity current excitation wave 

分 类 号：P736.21[天文地球—海洋地质] P731.2[天文地球—海洋科学]