Abrupt climatic changes as triggering mechanisms of massive volcanic collapses

Abrupt climatic changes as triggering mechanisms of massive volcanic collapses Abrupt climate change can trigger volcanic collapses, phenomena that cause the destruction of the entire sector of a volcano, including its summit. During the past 30 ka, major volcanic collapses occurred just after main glacial peaks that ended with rapid deglaciation. Glacial debuttressing, load discharge and fluid circulation coupled with the post-glacial increase of humidity and heavy rains can activate the failure of unstable edifices. Furthermore, significant global warming can be responsible for the collapse of ice-capped unstable volcanoes, an unpredictable hazard that in few minutes can bury inhabited areas. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Volcanology and Geothermal Research Elsevier

Abrupt climatic changes as triggering mechanisms of massive volcanic collapses

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Publisher
Elsevier
Copyright
Copyright © 2006 Elsevier Ltd
ISSN
0377-0273
eISSN
1872-6097
DOI
10.1016/j.jvolgeores.2006.04.009
Publisher site
See Article on Publisher Site

Abstract

Abrupt climate change can trigger volcanic collapses, phenomena that cause the destruction of the entire sector of a volcano, including its summit. During the past 30 ka, major volcanic collapses occurred just after main glacial peaks that ended with rapid deglaciation. Glacial debuttressing, load discharge and fluid circulation coupled with the post-glacial increase of humidity and heavy rains can activate the failure of unstable edifices. Furthermore, significant global warming can be responsible for the collapse of ice-capped unstable volcanoes, an unpredictable hazard that in few minutes can bury inhabited areas.

Journal

Journal of Volcanology and Geothermal ResearchElsevier

Published: Jul 15, 2006

References

  • The deglaciation of the northern hemisphere: a global perspective
    Alley, R.B.; Clark, P.U.
  • Geological constraints on the emplacement mechanism of the Parinacota debris avalanche, northern Chile
    Clavero, J.E.; Sparks, R.S.J.; Huppert, H.E.
  • Volcano instability induced by strike-slip faulting
    Lagmay, A.M.F.; van Wyk de Vries, B.; Kerle, N.; Pyle, D.M.
  • Catastrophic precipitation-triggered lahar at Casita volcano, Nicaragua; occurrence, bulking and transformation
    Scott, K.; Vallance, J.; Kerle, M.; Macías, J.L.; Strauch, W.; Devoli, G.
  • A gravitational spreading origin for the Socompa debris avalanche
    Van Wyk de Vries, B.; Self, S.; Francis, P.W.; Keszthelyi, L.

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