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Can magma-injection and groundwater forces cause massive landslides on Hawaiian volcanoes?

Journal of Volcanology and Geothermal Research

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DOI: 10.1016/0377-0273(94)00064-N

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Abstract

Landslides with volumes exceeding 1000 km3 have occurred on the flanks of Hawaiian volcanoes. Because the flanks typically slope seaward no more than 12??, the mechanics of slope failure are problematic. Limit-equilibrium analyses of wedge-shaped slices of the volcano flanks show that magma injection at prospective headscarps might trigger the landslides, but only under very restrictive conditions. Additional calculations show that groundwater head gradients associated with topographically induced flow and sea-level change are less likely to be important. Thus a simple, quantitative explanation for failure of Hawaiian volcano flanks remains elusive, and more complex scenarios may merit investigation. -from Author

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Can magma-injection and groundwater forces cause massive landslides on Hawaiian volcanoes?
Series title:
Journal of Volcanology and Geothermal Research
DOI:
10.1016/0377-0273(94)00064-N
Volume
66
Issue:
1-4
Year Published:
1995
Language:
English
Publisher:
Elsevier
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
295
Last page:
308
Number of Pages:
14