Physics – Geophysics
Scientific paper
Mar 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012georl..3905308k&link_type=abstract
Geophysical Research Letters, Volume 39, Issue 5, CiteID L05308
Physics
Geophysics
Biogeosciences: Natural Hazards (4308), Marine Geology And Geophysics: Subduction Zone Processes (1031, 3613, 8170, 8413), Marine Geology And Geophysics: Submarine Landslides
Scientific paper
We describe in detail possible large submarine landslides, several tens of kilometers in length and width, on the trench landward slope of the Japan Trench on the basis of high-resolution topographic surveys and detailed seafloor observations. These slides stopped at the toe of the trench slope. After initial movement of the toe along a basal decollement or thrust of the trench landward slope wedge during an earthquake, the basal frictional condition(s) might change drastically from static to dynamic, thus reducing the frictional strength. As a result, rapid submarine landsliding push downward on the toe, generating large horizontal displacements for tsunamis. This hypothesis should explain suitably the relation between large displacement of the thrust fault and tsunami generation by the 2011 Tohoku earthquake as well as tsunami generation by the 1896 Tohoku earthquake.
Kanamatsu Toshiya
Kawamura Kiichiro
Ogawa Yujiro
Sakaguchi Arito
Sasaki Tomoyuki
No associations
LandOfFree
Large submarine landslides in the Japan Trench: A new scenario for additional tsunami generation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Large submarine landslides in the Japan Trench: A new scenario for additional tsunami generation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Large submarine landslides in the Japan Trench: A new scenario for additional tsunami generation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1559164