Department of Earth and Planetary Sciences, Faculty of Sciences, Kyushu University, Fukuoka,Japan
Natural Disaster Research Institute of Iran, Tehran, Iran
Institute of Seismology and Volcanology, Faculty of Sciences, Kyushu University, Shimabara,Japan
National Research Institute for Earth Science and Disaster Prevention, Tsukuba, Japan
Earthquake Research Center, Department of Geology, Faculty of Sciences, Ferdowsi University of Iran, Mashhad, Iran
抄録
We investigate the hypocenter distribution of aftershocks of the 26 December, 2002 Bam earthquake Mw 0.5 using a temporal seismic network installed for 1 month from 6 February, 2004. Preliminary hypocenters were determined using automatic phase-picking and calculating software. The epicenters are distributed linearly about 20km in length parallel 3.5km west of the Bam fault, and extend from the south of Bam city to the heavily damaged area of eastern Bam city including Arg-e-Bam. The hypocenters are distributed vertically or slightly leaning toward the east in the depth range from 0km to 15 km. Using the hypocenter distribution we propose a schematic 3-D structure model of the source fault distinguished from the Bam fault. Eastern Bam city is located just above the northern part of the source fault and also on the rupture propagation direction from the asperity. It may be a major reason why eastern Bam city suffered the heaviest damage.
雑誌名
東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo
巻
79
号
3-4
ページ
37 - 45
発行年
2004
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
Temporal Seismic Observation and Preliminary Hypocenter Determination of Aftershocks of the 2003 Bam Earthquake, Southeastern Iran
IHO79302.pdf
(3.32MB)
