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Titel |
Electromagnetic-wave radiation due to diastrophism of magma dike growth in Izu-Miyake volcanic eruptions in Japan in 2000 |
VerfasserIn |
M. Hata, I. Takumi, H. Yasukawa |
Medientyp |
Artikel
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Sprache |
Englisch
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ISSN |
1561-8633
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Digitales Dokument |
URL |
Erschienen |
In: Natural Hazards and Earth System Science ; 1, no. 1/2 ; Nr. 1, no. 1/2, S.43-51 |
Datensatznummer |
250000020
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Publikation (Nr.) |
copernicus.org/nhess-1-43-2001.pdf |
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Zusammenfassung |
A large 10 cm per
day diastrophism of the crust was experienced between Kozu and Niijima
Islands during the Izu-Miyake volcanic eruptions in Japan on 3–4 August
2000. The diastrophism was detected through GPS observation. The
seismometer also complied a swarm of earth-quakes at this time. Our
electromagnetic wave data, observed at 223 Hz at the Omaezaki site, about
110 km and 150 km northwest of the Kozu and Miyake Islands, respectively,
detected a clear, anomalous magnetic flux radiation that corresponded well
with the seismographic and GPS data. Similar radiation was received for
about one week preceding the big volcanic eruption that occurred on 18
August 2000. These observations indicate that the electromagnetic wave
monitoring system has the potential to monitor and/or warn of volcanic
activity, and the facts disclose one of the mysterious radiation
mechanisms of electromagnetic waves emitted from the Earth. |
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