Studying the coastal landslides processes by InSAR

2019 ◽  
Author(s):  
Mila Atanasova-Zlatareva ◽  
Hristo Nikolov
Keyword(s):  
Coastal Landslides

Formation of Thrust Structures in Front of Coastal Landslides

2005 ◽  
Vol 113 (1) ◽  
pp. 107-114 ◽  
Author(s):  
Jasper Knight
Keyword(s):  
Coastal Landslides

scholarly journals New High-Resolution Modeling of the 2018 Palu Tsunami, Based on Supershear Earthquake Mechanisms and Mapped Coastal Landslides, Supports a Dual Source

2021 ◽  
Vol 8 ◽  
Author(s):  
Lauren Schambach ◽  
Stephan T. Grilli ◽  
David R. Tappin
Keyword(s):  
Partial Information ◽  
Tide Gauge ◽  
Frequency Dispersion ◽  
Tsunami Modeling ◽  
Marine Geology ◽  
Boussinesq Model ◽  
Tsunami Waves ◽  
Dual Source ◽  
Earthquake Models ◽  
Coastal Landslides

The Mw 7.5 earthquake that struck Central Sulawesi, Indonesia, on September 28, 2018, was rapidly followed by coastal landslides and destructive tsunami waves within Palu Bay. Here, we present new tsunami modeling that supports a dual source mechanism from the supershear strike-slip earthquake and coastal landslides. Up until now the tsunami mechanism: earthquake, coastal landslides, or a combination of both, has remained controversial, because published research has been inconclusive; with some studies explaining most observations from the earthquake and others the landslides. Major challenges are the numerous different earthquake source models used in tsunami modeling, and that landslide mechanisms have been hypothetical. Here, we simulate tsunami generation using three published earthquake models, alone and in combination with seven coastal landslides identified in earlier work and confirmed by field and bathymetric evidence which, from video evidence, produced significant waves. To generate and propagate the tsunamis, we use a combination of two wave models, the 3D non-hydrostatic model NHWAVE and the 2D Boussinesq model FUNWAVE-TVD. Both models are nonlinear and address the physics of wave frequency dispersion critical in modeling tsunamis from landslides, which here, in NHWAVE are modeled as granular material. Our combined, earthquake and coastal landslide, simulations recreate all observed tsunami runups, except those in the southeast of Palu Bay where they were most elevated (10.5 m), as well as observations made in video recordings and at the Pantoloan Port tide gauge located within Palu Bay. With regard to the timing of tsunami impact on the coast, results from the dual landslide/earthquake sources, particularly those using the supershear earthquake models are in good agreement with reconstructed time series at most locations. Our new work shows that an additional tsunami mechanism is also necessary to explain the elevated tsunami observations in the southeast of Palu Bay. Using partial information from bathymetric surveys in this area we show that an additional, submarine landslide here, when simulated with the other coastal slides, and the supershear earthquake mechanism better explains the observations. This supports the need for future marine geology work in this area.

Radar Structure of Earthquake-Induced, Coastal Landslides in Anchorage, Alaska

2000 ◽  
Vol 7 (1) ◽  
pp. 38-45 ◽  
Author(s):  
Walter A. Barnhardt ◽  
Robert E. Kayen
Keyword(s):  
Coastal Landslides

DISCUSSION. ENGINEERING ASPECTS OF COASTAL LANDSLIDES.

1972 ◽  
Vol 53 (2) ◽  
pp. 401-406
Author(s):  
AM MUIR WOOD ◽  
L SUMMERS ◽  
M GYSEL ◽  
ME BARTON ◽  
WA PRICE ◽  
...  
Keyword(s):  
Coastal Landslides

Early Holocene coastal landslides linked to land uplift in western Sweden

2017 ◽  
Vol 99 (3) ◽  
pp. 288-311
Author(s):  
Colby A. Smith ◽  
Olof Larsson ◽  
Mats Engdahl
Keyword(s):  
Early Holocene ◽  
Land Uplift ◽  
Coastal Landslides
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