Record Details

Accumulation characteristics and geological hazard effects of gravity flow on northwestern lower continental slope in the South China Sea

NOPR - NISCAIR Online Periodicals Repository

View Archive Info
 
 
Field Value
 
Title Accumulation characteristics and geological hazard effects of gravity flow on northwestern lower continental slope in the South China Sea
 
Creator Gao, W
Liu, L J
Liu, J
Xu, Y Q
Li, P
Gao, S
 
Subject Gravity flow
Geological hazards
Lower continental slope
South China Sea
Substance transport
 
Description 366-373
The northwestern lower continental slope margin in the South China Sea is the main fluid property conversion area of the debris flow and turbidity current, where accumulations of typical and special gravity flows are developed. In the upper strata of the research area, there are at least four stages of debris flow accumulations. Several 1-3 m high pressure ridges are developed on the seafloor surface and on the top of underlying accumulations. A large quantity of slide accumulations or extrusion deformation structures is developed on the slope and at the base of the slope. The slides accumulation surface can be clearly seen, and the accumulations are still moving downward slowly and extruding continuously, resulting in a series of geological hazard effects. The study shows that the sediments are mainly composed of silt and clayey silt on the northwestern lower continental slope in the South China Sea. The sediments are deposited at the foot of the slope where the energy of gravity flow begins to reduce rapidly. The cores and shallow seismic profiles of upper strata on the lower continental slope as described in this paper have proven that there are three different accumulation processes, and the geological hazard effects incurred are completely different so that we shall further enhance the research on the seafloor geological hazard effects.
 
Date 2021-06-07T06:52:50Z
2021-06-07T06:52:50Z
2021-05
 
Type Article
 
Identifier 2582-6727 (Online); 2582-6506 (Print)
http://nopr.niscair.res.in/handle/123456789/57427
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.50(05) [May 2021]