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- Title
The mechanism of shallow submarine landslides triggered by storm surge.
- Authors
Zhang, Min; Huang, Yu; Bao, Yangjuan
- Abstract
Submarine landslides triggered by storm surge have a major impact on human life by destabilizing offshore installations and generating tsunamis. Based on disaster-related marine geology, this paper analyzes the characteristics of storm surge load and response of seabed soil under the action of storm surge, and then examines mechanisms of submarine landslides triggered by storm surge. Important advances in this field are summarized and a scope for future studies is suggested. Current studies show that there are three load forms of storm surge: storm tide, storm wave, and storm current. Among these, the storm wave is the main factor in submarine slope instability. Under storm surge load, there is a series of changes in seabed soil, such as pressure consolidation, liquefied rheology, and mass transport. Therefore, two types of theory can be used to explain the mechanism of submarine landslide, liquefaction failure, and shear failure. Future studies in this field may focus on the mechanism of soil-water interaction under storm surge, establishing the critical condition of slope failure and failure modes of submarine landslides, and improving techniques of field monitoring and testing.
- Subjects
LANDSLIDES; STORM surges; SUBMARINE geology; ENVIRONMENTAL disasters; SOIL liquefaction
- Publication
Natural Hazards, 2016, Vol 81, Issue 2, p1373
- ISSN
0921-030X
- Publication type
Article
- DOI
10.1007/s11069-015-2112-0