Acute sensitivity of landslide rates to initial soil porosity
Science
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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.
| 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 |
| Google Analytic Metrics | Metrics page |