The dynamics of coastal landslides: insights from laboratory experiments and theoretical analyses |
| |
Authors: | Paolo Mazzanti Fabio Vittorio De Blasio |
| |
Affiliation: | 1.NHAZCA S.r.l., spin-off “Sapienza” Università di Roma,Rome,Italy;2.Dipartimento di Scienze della Terra,“Sapienza” Università di Roma,Rome,Italy;3.Department of Geosciences,University of Oslo,Oslo,Norway |
| |
Abstract: | Laboratory experiments have been carried out to study the dynamics of landslides commencing sub-aerially and ending inside
a water basin. A comparison between experiments with and without water shows differences in the final deposits. In the subaqueous
experiments the grains did not spread out from the mass in the same way as in the subaerial movement. It is suggested that
air can be trapped inside the mass which, released during the final stage of the underwater mass propagation, modifies the
buoyancy forces. Other effects observed during the air to water transition include the “jumping” and “tilting” of grains.
It is concluded that the air to water transition plays a key role in the dynamics of combined subaerial/subaqueous landslides.
The information obtained from the experiments may also be useful in the consideration of tsunami generation and the sedimentological
analyses of landslide deposits. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|