What causes large submarine landslides on low gradient (<2°) continental slopes with slow (∼0.15 m/kyr) sediment accumulation?
| Autor: | Peter J. Talling, Morelia Urlaub, Antonis Zervos, Douglas G. Masson |
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| Rok vydání: | 2015 |
| Předmět: |
010504 meteorology & atmospheric sciences
Consolidation (soil) Submarine Landslide 010502 geochemistry & geophysics 01 natural sciences Overpressure Pore water pressure Geophysics 13. Climate action Space and Planetary Science Geochemistry and Petrology Slope stability Earth and Planetary Sciences (miscellaneous) 14. Life underwater Geohazard Geomorphology Geology 0105 earth and related environmental sciences Submarine landslide |
| Zdroj: | Journal of Geophysical Research: Solid Earth. 120:6722-6739 |
| ISSN: | 2169-9313 |
| DOI: | 10.1002/2015jb012347 |
| Popis: | Submarine landslides can cause damaging tsunamis, the height of which scales up with the volume of the displaced mass. The largest underwater landslides are far bigger than any landslides on land, and these submarine megaslides tend to occur on open continental slopes with remarkably low gradients of less than 2°. For geohazard assessments it is essential to understand what preconditions and triggers slope failure on such low gradients. Previous work has suggested that generation of high excess pore pressure due to rapid sediment deposition plays a key role in such failures. However, submarine slope failure also occurs where sedimentation rates are low ( |
| Databáze: | OpenAIRE |
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