|
|||||
|
|
Size distribution of submarine landslides along the middle continental slope of the East China Sea |
|
| Authors: | Guanghai Hu Tong Yan Zhenxia Liu Maarten Vanneste Lifeng Dong |
| Institution: | 1. College of Marine Geo-science, Ocean University of China, Qingdao 266100, P. R. China;First Institute of Oceanography, SOA, Qingdao 266061, P. R. China;International Centre of Geohazards, P.O. Box 3930, Ullevaal Stadion, 0806 Oslo, Norway 2. College of Marine Geo-science, Ocean University of China, Qingdao 266100, P. R. China 3. College of Marine Geo-science, Ocean University of China, Qingdao 266100, P. R. China;First Institute of Oceanography, SOA, Qingdao 266061, P. R. China 4. International Centre of Geohazards, P.O. Box 3930, Ullevaal Stadion, 0806 Oslo, Norway 5. First Institute of Oceanography, SOA, Qingdao 266061, P. R. China |
| Abstract: | This paper investigates the size distribution of submarine landslides on the middle continental slope of the East China Sea (ECS) using the size of the landslide source regions. Geomorphometric mapping is used to identify 102 mass movements from multibeam bathymetric data and to extract morphological information about the head scarps and side walls. These mass movements have areas ranging between 0.06 km2 and 15.51 km2 and volumes between 0.002 km3 and 2 km3. The area vs volume relationship of these failure scarps is approximately linear, suggesting a fairly uniform failure thickness in each event with scarce deep excavating landslides. The cumulative area distribution of the slope failures can be described by an inverse power law. The submarine landslides on the mid-ECS continental slope could be considered as a large-scale self-organizing system because they have the characteristics of a dissipative system in a critical state. |
| Keywords: | multibeam power law distribution submarine geomorphology self-organizing criticality East China Sea |
| 本文献已被 CNKI 维普 万方数据 SpringerLink 等数据库收录！ | |