Acute sensitivity of landslide rates to initial soil porosity.

Iverson, R M; Reid, M E; Iverson, N R; LaHusen, R G; Logan, M; Mann, J E; Brien, D L

Iverson, R M; Reid, M E; Iverson, N R; LaHusen, R G; Logan, M; Mann, J E; Brien, D L.

Afiliación

Iverson RM; U.S. Geological Survey, 5400 MacArthur Boulevard, Vancouver, WA 98661, USA.

Science ; 290(5491): 513-6, 2000 Oct 20.

Article en En | MEDLINE | ID: mdl-11039931

RESUMEN

Some landslides move imperceptibly downslope, whereas others accelerate catastrophically. Experimental landslides triggered by rising pore water pressure moved at sharply contrasting rates due to small differences in initial porosity. Wet sandy soil with porosity of about 0.5 contracted during slope failure, partially liquefied, and accelerated within 1 second to speeds over 1 meter per second. The same soil with porosity of about 0.4 dilated during failure and slipped episodically at rates averaging 0.002 meter per second. Repeated slip episodes were induced by gradually rising pore water pressure and were arrested by pore dilation and attendant pore pressure decline.

Buscar en Google

Añadir a Mi BVS

Imprimir

XML

PubMed Links

Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Diagnostic_studies Idioma: En Revista: Science Año: 2000 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos

Buscar en Google

Añadir a Mi BVS

Imprimir

XML

PubMed Links