Seismic Exploration Using Active Sources at Kuchierabujima Volcano, Southwest Japan
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Accession number;06A0068916
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| Title;Seismic Exploration Using Active Sources at Kuchierabujima Volcano, Southwest Japan |
| Author;
IGUCHI MASATO
(Kyoto Univ., Disaster Prev. Res. Inst., JPN)
YAMAMOTO KEIGO
(Kyoto Univ., Disaster Prev. Res. Inst., JPN)
HASHIMOTO TAKESHI
(Hokkaido Univ., Graduate School of Sci., JPN)
TSUTSUI TOMOKI
(Akita Univ., JPN)
TANAKA SATORU
(Tohoku Univ., Graduate School of Sci., JPN)
ONIZAWA SHIN'YA
(Tokyo Inst. of Technol.)
AOKI YOSUKE
(Univ. of Tokyo, Earthq. Res. Inst.)
WATANABE TOSHIKI
(Nagoya Univ., Graduate School of Sci., JPN)
OKURA TAKAHIRO
(Kyoto Univ., Graduate School of Sci., JPN)
SHIMIZU HIROSHI
(Kyushu Univ., School of Sciences, JPN)
YAKIWARA HIROSHI
(Kagoshima Univ., Fac. Sci., JPN)
MIYAMACHI HIROKI
(Kagoshima Univ., Fac. Sci., JPN)
HIRAMATSU HIDEYUKI
(Meteorological Agency, Fukuoka Disrict Meteorological Observatory, JPN)
TAMEGURI TAKESHI
(Kyoto Univ., Disaster Prev. Res. Inst., JPN)
TAKAYAMA TETSURO
(Kyoto Univ., Disaster Prev. Res. Inst., JPN)
FUKUSHIMA MASAYO
(Kyoto Univ., Disaster Prev. Res. Inst., JPN)
TRIASTUTY HETTY
(Kyoto Univ., Disaster Prev. Res. Inst., JPN)
ISHIHARA KAZUHIRO
(Kyoto Univ., Disaster Prev. Res. Inst., JPN)
OSHIMA HIROMITSU
(Hokkaido Univ., Graduate School of Sci., JPN)
SUZUKI ATSUO
(Hokkaido Univ., Graduate School of Sci., JPN)
MAEKAWA TOKUMITSU
(Hokkaido Univ., Graduate School of Sci., JPN)
KAJII TATSUYA
(Akita Univ., JPN)
WATANABE YOSHIAKI
(Akita Univ., JPN)
OGIWARA YOHEI
(Tohoku Univ., Graduate School of Sci., JPN)
NOGAMI KENJI
(Tokyo Inst. of Technol.)
OIKAWA MITSUHIRO
(Tokyo Inst. of Technol.)
HIRABAYASHI JUN'ICHI
(Tokyo Inst. of Technol.)
TSUJI HIROSHI
(Univ. of Tokyo, Earthq. Res. Inst.)
HIRATA YASUHIRO
(Univ. of Tokyo, Earthq. Res. Inst.)
OKUDA TAKASHI
(Nagoya Univ., Graduate School of Sci., JPN)
ITO TAKU
(Nagoya Univ., Graduate School of Sci., JPN)
YOSHIKAWA SHIN
(Kyoto Univ., Graduate School of Sci., JPN)
INOUE HIROYUKI
(Kyoto Univ., Graduate School of Sci., JPN)
IKEDA SAYAKA
(Kyoto Univ., Graduate School of Sci., JPN)
HORI MIO
(Kyushu Univ., School of Sciences, JPN)
SAITO MASAKI
(Kyushu Univ., School of Sciences, JPN)
HIRANO SHUICHIRO
(Kagoshima Univ., Fac. Sci., JPN)
UEKAMA YUDAI
(Kagoshima Univ., Fac. Sci., JPN)
IGUCHI MOTOHARU
(Meteorological Agency, Fukuoka Disrict Meteorological Observatory, JPN)
TAKESHITA TAKAHIRO
(Meteorological Agency, Kagoshima Local Meteorological Observatory, JPN)
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Journal Title;Bulletin of the Earthquake Research Institute, University of Tokyo
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Journal Code:S0002A
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ISSN:0040-8972
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VOL.80;NO.1;PAGE.11-40(2005)
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| Figure&Table&Reference;FIG.11, TBL.6, REF.25 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;Seismic exploration using artificial sources was conducted at Kuchierabujima volcano, southwest Japan in November 2004 by 40 participants from 9 national universities and Japan Meteorological Agency to investigate the subsurface seismic structure. The exploration was the 11th joint experiment under the National Project for Prediction of Volcanic Eruptions. A total of 183 temporal stations equipped with a 2Hz vertical component seismometer (including 75 3-component seismometers) and a portable data logger were deployed on Kuchierabu Island. Dynamite shots with charges of 10-115kg were detonated at 19 locations, and seismic signals were successfully recorded. To reveal the P-wave velocity structure, 2955 arrival times of the first motion were picked from the seismograms, and 2187 were classified into ranks A and B. From the record sections and the arrival time data, characteristics reflecting the geological structure were identified. Refracted waves of 5km/s were observed at stations>5km from the shot points. Apparent velocities near the shot points depend on the surface geology around the shots. P-wave arrived earlier at stations near the summits. Strongly scattered waves were observed similarly near the summits. (author abst.) |
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