HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Journal articles

Numerical simulation of the December 1997 Debris Avalanche in Montserrat, Lesser Antilles

Abstract : Emplacement of a debris avalanche in the White River valley of southern Montserrat (Lesser Antilles), on 26 December 1997, was caused by sector failure of the south flank of the active Soufriere Hills volcano. Pre- and post-emplacement surveys of the region indicate a debris avalanche deposit volume of about 40-50 × 106 m³. This avalanche is modeled as the gravitational flow of a homogeneous continuum governed by a basal friction law. Mass and momentum equations are depth-averaged over the slide thickness. Numerical results show that the observed distribution of debris and duration of emplacement is simulated well for a Coulomb-type friction law with a dynamic friction coefficient dependent upon the thickness and the velocity of the flowing mass.
Document type :
Journal articles
Complete list of metadata

Contributor : Nathalie Pothier Connect in order to contact the contributor
Submitted on : Friday, March 4, 2022 - 4:50:45 PM
Last modification on : Sunday, March 6, 2022 - 3:23:52 AM


Geophysical Research Letters -...
Publisher files allowed on an open archive





Ph. Heinrich, G. Boudon, J. C. Komorowski, R. S. J. Sparks, R. Herd, et al.. Numerical simulation of the December 1997 Debris Avalanche in Montserrat, Lesser Antilles. Geophysical Research Letters, American Geophysical Union, 2001, 28, pp.2529-2532. ⟨10.1029/2001GL012968⟩. ⟨insu-03597763⟩



Record views


Files downloads