Explosion energy of the 2004 eruption of the Asama Volcano, central Japan, inferred from ionospheric disturbances
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概要
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The Japanese dense array of Global Positioning System recorded ionospheric disturbances as changes in Total Electron Content ∼12 minutes after the September 1 2004 eruption of the Asama Volcano, Central Japan. The disturbance had a period of one and a quarter minutes and propagated as fast as ∼1.1 km/s, suggesting its origin as the acoustic wave generated by the explosion. By comparing the disturbance amplitudes with those by a surface mine blast with a known energy, the overall Asama explosion energy is inferred to be about 2 × 1014 J.
- American Geophysical Unionの論文
- 2006-07-19
American Geophysical Union | 論文
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