In order to investigate the subsurface seismic structure beneath Asama Volcano, Japan, an active seismic experiment was conducted in October, 2006 with 60 participants from nine national universities and Japan Meteorological Agency as the 12 th joint experiment under the National Project for Prediction of Volcanic Eruptions. The experiment was conducted by recording seismic waves exerted from five dynamite shots with charges of 250.300kg. The seismic waves were recorded by 464 seismometers with a natural frequency of 2Hz and 210 seismometers with a natural frequency of 4.5Hz and data loggers temporally deployed around Asama Volcano. To reveal the P-wave velocity structure, 1839 useful arrival times were picked from the seismograms. Observed data suggests that the subsurface structure is likely to be highly heterogeneous and seems to be consistent with previous geophysical and geological studies
雑誌名
東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo
巻
83
号
1
ページ
1 - 26
発行年
2008
ISSN
00408972
書誌レコードID
AN00162258
フォーマット
application/pdf
日本十進分類法
051.1
出版者
東京大学地震研究所
出版者別名
Earthquake Research Institute, University of Tokyo
浅間山における人工地震探査 : 探査の概要と初動の走時について
IHO83101.pdf
(4.46MB)
