Submarine landslides and the importance of the initial sediment composition for run-out length and final deposit |
| |
| Authors: | Anders Elverhoi Hedda Breien Fabio V De Blasio Carl B Harbitz Matteo Pagliardi |
| |
| Institution: | (1) Department of Geosciences, University of Oslo, P.O. Box 1047, Blindern, 0316 Oslo, Norway;(2) Norwegian Geotechnical Institute, P.O. Box 3930, Ullevaal Stadion, 0806 Oslo, Norway;(3) International Centre for Geohazards, Norwegian Geotechnical Institute, P.O. Box 3930, Ullevaal Stadion, 0806 Oslo, Norway;(4) FLOW-ING s.r.lPza. J.F. Kennedy, 27, 19124 La Spezia (SP), Italy |
| |
| Abstract: | Much remains to understand the dynamic processes during the flow of submarine landslides. A first relevant problem is to explain
the extraordinary mobility of submarine landslides, which has no comparison in subaerial mass movement. Another challenging
question is the apparent disparity between submarine landslides that remain compact for hundreds of kilometres and those that
disintegrate during the flow, finally evolving into turbidity currents. This problem is linked to a central ongoing debate
on the relative importance of turbidity currents versus submarine landslides in reshaping the continental margin. Based on
three epitomic case studies and on laboratory experiments with artificial debris flows of various composition, we suggest
a possible explanation for the disparity between compact and disintegrating landslides, identifying the clay-to-sand ratio
as the key control parameter. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
