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Potential Flank-Collapse of Soufrière Volcano, Guadeloupe, Lesser Antilles? Numerical Simulation and Hazards

Author

Listed:
  • Anne Friant
  • Georges Boudon
  • Jean-Christophe Komorowski
  • Philippe Heinrich
  • Michel Semet

Abstract

The past history of recurrent flank collapses of la Soufrière volcano of Guadeloupe, its structure, its well-developed hydrothermal system and the current activity constitute factors that could promote a future flank collapse, particularly in the case of a significant increase of activity, with or without shallow magmatic input. To address the hazards associated with such a collapse, we model the emplacement of the debris avalanche generated by a flank-collapse event in 1,250 BC (3,100 years B.P.). We use a finite-difference grain-flow model solving mass and momentum conservation equations that are depth-averaged over the slide thickness, and a Coulomb-type friction law with a variable basal (minimum) friction angle. Using the parameter values determined from this simulation, we then simulate the debris avalanche which could be generated by a potential collapse of the present lava dome. We then discuss the region which could be affected by such a future collapse, and additional associated hazards of concern. Copyright Springer 2006

Suggested Citation

  • Anne Friant & Georges Boudon & Jean-Christophe Komorowski & Philippe Heinrich & Michel Semet, 2006. "Potential Flank-Collapse of Soufrière Volcano, Guadeloupe, Lesser Antilles? Numerical Simulation and Hazards," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 39(3), pages 381-393, December.
    • Handle: RePEc:spr:nathaz:v:39:y:2006:i:3:p:381-393
    DOI: 10.1007/s11069-005-6128-8
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