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| Titel |
Development of the very long-range cosmic-ray muon radiographic imaging technique to explore the internal structure of an erupting volcano, Shinmoe-dake, Japan |
| VerfasserIn |
T. Kusagaya, H. K. M. Tanaka |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
2193-0856
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| Digitales Dokument |
URL |
| Erschienen |
In: Geoscientific Instrumentation, Methods and Data Systems ; 4, no. 2 ; Nr. 4, no. 2 (2015-11-24), S.215-226 |
| Datensatznummer |
250115249
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| Publikation (Nr.) |
 copernicus.org/gi-4-215-2015.pdf |
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| Zusammenfassung |
| Muography offers us a tool to observe hazardous erupting volcanoes remotely.
However, practical muographic observations of volcanoes from a distance are
difficult; therefore, various observations have been performed in the
vicinity (< 1.5 km) of volcano peaks to suppress background noise
and enhance images. In this study, we created a muographic image directly
beneath the caldera floor of the erupting Shinmoe-dake volcano in Japan by
locating our muography telescope 5 km from the peak. The Shinmoe-dake
volcano began to erupt on 19 January 2011 and, in less than 1 month, the
ejected lava almost completely filled the caldera and completely changed the
topography of the caldera floor. The resultant image shows a low-density
region underneath the western part of the newly created caldera floor, which
indicates the existence of a void there. After the volcano became less active
in February 2011, infrequent eruptions might have left a void beneath the
caldera floor, which may trigger a collapse in the future. We anticipate that
our novel muography will be a practical tool for monitoring and predicting
eruption sequences in the near future. |
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