Experimental study on the dynamic process and characteristics of slope sediments after breaking of internal solitary waves

Li Yibing; Liu Lejun; Zhou Qingjie; Hui Yang

doi:10.12284/hyxb2022174

Volume 44 Issue 8

Aug. 2022

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Li Yibing，Liu Lejun，Zhou Qingjie, et al. Experimental study on the dynamic process and characteristics of slope sediments after breaking of internal solitary waves[J]. Haiyang Xuebao，2022, 44(8)：42–50 doi: 10.12284/hyxb2022174

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Experimental study on the dynamic process and characteristics of slope sediments after breaking of internal solitary waves

doi: 10.12284/hyxb2022174

1.
Marine Engineering Environment & Geomatic Center, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China
2.
Laboratory of Marine Geology and Geophysics, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China
3.
Mechanical and Electrical Engineering, China University of Petroleum School (Huadong), Qingdao 266580, China

Received Date: 2021-09-16
Rev Recd Date: 2021-12-27

Available Online: 2022-06-20

Publish Date: 2022-08-15

Abstract

Abstract

In order to improve the study of the interaction between internal solitary waves and submarine slope sediments, the stage of continued motion on the slope after internal solitary waves fragmentation is focused on in this paper, and conducts physical simulation experiments to analyse the changes in earth pressure and super-pore water pressure in response to the slope to reveal the process of internal wave action. The results show that the sediment particles on the slope are resuspended under the combined action of vortex and seepage caused by the internal solitary waves fragmentation, and the change in slope gradient does not change the dominant dynamic role of the sediment in generating the dynamic response; the amplitude of the internal solitary waves affect the ratio between vortex and seepage, i.e. the vortex is dominant under small amplitude conditions and the seepage is dominant under large amplitude conditions; the fragmented fluid forms a new dynamic role when it rushes out along the slope. The dynamic response of the sediment to the new vorticity is influenced by the slope of the slope. The results of this paper are useful for the study of internal solitary waves resuspension transporting seafloor sediments and modifying seafloor topography.
- internal solitary wave,
- velocity,
- submarine slope,
- dynamic response

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References(15)

References

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