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| Titel |
Scaling properties of planetary calderas and terrestrial volcanic eruptions |
| VerfasserIn |
L. Sanchez, R. Shcherbakov |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1023-5809
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| Digitales Dokument |
URL |
| Erschienen |
In: Nonlinear Processes in Geophysics ; 19, no. 6 ; Nr. 19, no. 6 (2012-11-06), S.585-593 |
| Datensatznummer |
250014257
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| Publikation (Nr.) |
 copernicus.org/npg-19-585-2012.pdf |
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| Zusammenfassung |
| Volcanism plays an important role in transporting internal heat of planetary
bodies to their surface. Therefore, volcanoes are a manifestation of the
planet's past and present internal dynamics. Volcanic eruptions as well as
caldera forming processes are the direct manifestation of complex
interactions between the rising magma and the surrounding host rock in the
crust of terrestrial planetary bodies. Attempts have been made to compare
volcanic landforms throughout the solar system. Different stochastic models
have been proposed to describe the temporal sequences of eruptions on
individual or groups of volcanoes. However, comprehensive understanding of
the physical mechanisms responsible for volcano formation and eruption and
more specifically caldera formation remains elusive. In this work, we propose
a scaling law to quantify the distribution of caldera sizes on Earth, Mars,
Venus, and Io, as well as the distribution of calderas on Earth depending on
their surrounding crustal properties. We also apply the same scaling analysis
to the distribution of interevent times between eruptions for volcanoes that
have the largest eruptive history as well as groups of volcanoes on Earth. We
find that when rescaled with their respective sample averages, the
distributions considered show a similar functional form. This result implies
that similar processes are responsible for caldera formation throughout the
solar system and for different crustal settings on Earth. This result
emphasizes the importance of comparative planetology to understand planetary
volcanism. Similarly, the processes responsible for volcanic eruptions are
independent of the type of volcanism or geographical location. |
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