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Landslide velocity, thickness, and rheology from remote sensing: La Clapiere landslide, France

Booth, Adam M. and Lamb, Michael P. and Avouac, Jean-Philippe and Delacourt, Christophe (2013) Landslide velocity, thickness, and rheology from remote sensing: La Clapiere landslide, France. Geophysical Research Letters, 40 (16). pp. 4299-4304. ISSN 0094-8276. http://resolver.caltech.edu/CaltechAUTHORS:20131108-111334162

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Abstract

Quantifying the velocity, volume, and rheology of deep, slow-moving landslides is essential for hazard prediction and understanding landscape evolution, but existing field-based methods are difficult or impossible to implement at remote sites. Here we present a novel and widely applicable method for constraining landslide 3-D deformation and thickness by inverting surface change data from repeat stereo imagery. Our analysis of La Clapière, an ~1 km^2 bedrock landslide, reveals a concave-up failure surface with considerable roughness over length scales of tens of meters. Calibrating the thickness model with independent, local thickness measurements, we find a maximum thickness of 163 m and a rheology consistent with distributed deformation of the highly fractured landslide material, rather than sliding of an intact, rigid block. The technique is generally applicable to any mass movements that can be monitored by active or historic remote sensing.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1002/grl.50828 DOIArticle
http://onlinelibrary.wiley.com/doi/10.1002/grl.50828/abstractPublisherArticle
ORCID:
AuthorORCID
Lamb, Michael P.0000-0002-5701-0504
Avouac, Jean-Philippe0000-0002-3060-8442
Additional Information:© 2013 American Geophysical Union. Received 10 June 2013; revised 30 July 2013; accepted 3 August 2013; published 27 August 2013. We thank S. Gaffet for the coordinates of seismic stations, S. Leprince for fruitful discussions, and Y. Guglielmi and G. Hilley for insightful reviews. This work was supported by the Keck Institute for Space Studies and Terrestrial Hazard Observation and Reporting Center at Caltech. The Editor thanks George Hilley and an anonymous reviewer for assistance evaluating this paper.
Group:Keck Institute for Space Studies, Seismological Laboratory
Funders:
Funding AgencyGrant Number
Keck Institute for Space Studies (KISS)UNSPECIFIED
Caltech Terrestrial Hazard Observation and Reporting (THOR) CenterUNSPECIFIED
Subject Keywords:landslide thickness; La Clapiere; inverse problem; failure plane geometry; remote sensing; rheology
Record Number:CaltechAUTHORS:20131108-111334162
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20131108-111334162
Official Citation:Booth, A. M., M. P. Lamb, J.-P. Avouac, and C. Delacourt (2013), Landslide velocity, thickness, and rheology from remote sensing: La Clapière landslide, France, Geophys. Res. Lett., 40, 4299–4304, doi:10.1002/grl.50828
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:42339
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:08 Nov 2013 19:33
Last Modified:23 Nov 2016 00:53

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