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Acute sensitivity of landslide rates to initial soil porosity

Science

By:
, , , , , , and
DOI: 10.1126/science.290.5491.513

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Abstract

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 I meter per second. The same soil with porosity of about 0.4 dilated during failure and supped 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.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Acute sensitivity of landslide rates to initial soil porosity
Series title:
Science
DOI:
10.1126/science.290.5491.513
Volume
290
Issue:
5491
Year Published:
2000
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Science
First page:
513
Last page:
516