Collapse-driven large eruptions
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- 作者：Agust Gudmundsson a.gudmundsson@es.rhul.ac.uk" class="auth_mail" title="E-mail the corresponding author
- 关键词：Volcanoes ; Magma chambers ; Collapse calderas ; Volcanic hazards ; Ring-dykes ; Crustal stresses
- 刊名：Journal of Volcanology and Geothermal Research
- 出版年：2015
- 出版时间：1 October 2015
- 年：2015
- 卷：304
- 期：Complete
- 页码：1-10
- 全文大小：875 K
文摘
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Suggests that shallow magma chambers are too small to generate large eruptions.
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Proposes a new caldera-driven mechanism of large (especially explosive) eruptions.
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Caldera subsidence maintains excess pressure and squeezes magma out of the chamber.
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Flanks of the caldera rise, gas expands, and magma is squeezing out of the chamber.