Single- and Multichannel Seismics

2012 ◽  
Keyword(s):  
Multichannel Seismics

Segmentation of the Manila subduction system from migrated multichannel seismics and wedge taper analysis

2013 ◽  
Vol 34 (3-4) ◽  
pp. 379-391 ◽  
Author(s):  
Junjiang Zhu ◽  
Zongxun Sun ◽  
Heidrun Kopp ◽  
Xuelin Qiu ◽  
Huilong Xu ◽  
...  
Keyword(s):  
Multichannel Seismics ◽  
Subduction System

Pattern of deformation around the central Aeolian Islands: evidence from multichannel seismics and GPS data

Terra Nova ◽  
2007 ◽  
Vol 19 (5) ◽  
pp. 317-323 ◽  
Author(s):  
Andrea Argnani ◽  
Enrico Serpelloni ◽  
Claudia Bonazzi
Keyword(s):  
Gps Data ◽  
Aeolian Islands ◽  
Multichannel Seismics

scholarly journals Open-slope, translational submarine landslide in a tectonically active volcanic continental margin (Licosa submarine landslide, southern Tyrrhenian Sea)

2018 ◽  
Vol 477 (1) ◽  
pp. 133-150 ◽  
Author(s):  
M. Sammartini ◽  
A. Camerlenghi ◽  
F. Budillon ◽  
D. D. Insinga ◽  
F. Zgur ◽  
...  
Keyword(s):  
Slope Stability ◽  
Continental Margin ◽  
Submarine Landslide ◽  
Tyrrhenian Sea ◽  
Structural Discontinuity ◽  
Tectonically Active ◽  
Southern Tyrrhenian Sea ◽  
Multichannel Seismics ◽  
Back Arc ◽  
Detachment Surface

AbstractThe southern Tyrrhenian continental margin is the product of Pliocene–Recent back-arc extension. An area of approximately 30 km2 of gentle (about 1.5°) lower slope of the last glacial outer shelf sedimentary wedge in water depths of between 200 and 300 m failed between 14 and 11 ka BP. We approached the landslide by multibeam and sub-bottom profiler surveying, high-resolution multichannel seismics, and coring for stratigraphic and geotechnical purposes. With regard to a slope-stability analysis, we carried out an assessment of the stratigraphic and structural setting of the area of the Licosa landslide. This analysis revealed that the landslide detached along a marker bed that was composed of the tephra layer Y-5 (c. 39 ka). Several previously unknown geological characteristics of the area are likely to have affected the slope stability. These are the basal erosion of the slope in the Licosa Channel, a high sedimentation rate in the sedimentary wedge, earthquake shaking, the volcanic ash nature of the detachment surface, subsurface gas/fluid migration, and lateral porewater flow from the depocentre of wedge to the base of the slope along the high-permeability ash layers. A newly discovered prominent structural discontinuity is identified as the fault whose activity may have triggered the landslide.

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