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| Titel |
Counter-current convection in volcanic conduits |
| VerfasserIn |
Andrew Fowler, Marguerite Robinson |
| Konferenz |
EGU General Assembly 2017
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250148410
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| Publikation (Nr.) |
 EGU/EGU2017-12663.pdf |
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| Zusammenfassung |
| The maintenance of continuing eruptive capability of Strombolian volcanoes is often thought to be due to a counter-current convection in the volcanic conduit, whereby buoyant outgassing upwelling magma rises, while a downgoing gas-poor viscous magma descends. An examination of this concept using theories of two-phase flow suggests that such a regime is only possible if the magma chamber pressure is extremely low, which in turn raises questions of whether such conditions are possible in a magma chamber. We consider certain elaborations which may have a bearing on this observation. |
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