Characterization of Submarine Landslide Complexes Offshore Costa Rica: An Evolutionary Model Related to Seamount Subduction

Harders, R., Weinrebe, W. and Ranero, C. R. (2014) Characterization of Submarine Landslide Complexes Offshore Costa Rica: An Evolutionary Model Related to Seamount Subduction Submarine Mass Movements and Their Consequences. Advances in Natural and Technological Hazards Research, 37 . Springer International Publishing, Cham, pp. 381-390. ISBN 978-3-319-00971-1 DOI 10.1007/978-3-319-00972-8_34.

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Abstract

Offshore Costa Rica large seamounts under-thrust the continental convergent margin causing slides of complex morphology. The large dimension of the structures has attracted previous investigations and their basic characteristics are known. However, no detailed mapping of their complex morphology has been reported. Here we present a detailed mapping of the failure-related structures and deposits. We use deep-towed sidescan sonar data, aided by multibeam bathymetry to analyze their geometry, geomorphologic character, backscatter intensity, and spatial distribution. Those observations are used to analyze the relationship between landslide characteristics and abundance, to the changes in the style of deformation caused by the subduction of seamounts to progressively greater depth under the margin.

Document Type: Book chapter
Keywords: Seamount subduction; Landslides; Deformation; Convergent margin; Model
Research affiliation: OceanRep > GEOMAR > FB4 Dynamics of the Ocean Floor > FB4-GDY Marine Geodynamics
DOI etc.: 10.1007/978-3-319-00972-8_34
Date Deposited: 02 Dec 2013 13:42
Last Modified: 22 Mar 2017 12:13
URI: http://eprints.uni-kiel.de/id/eprint/22515

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