Source fault structure of the 2003 Bam earthquake, southeastern Iran, inferred from the aftershock distribution and its relation to the heavily damaged area: Existence of the Arg-e-Bam fault proposed

Takeshi Nakamura, Sadaomi Suzuki, Hossein Sadeghi, Seyed Mahmoud Fatemi Aghda, Takeshi Matsushima, Yoshihiro Ito, Sayyed Keivan Hosseini, Arash Jafar Gandomi, Mehdi Maleki

研究成果: Contribution to journalArticle査読

30 被引用数 (Scopus)

抄録

We investigate the hypocenter distribution of aftershocks of the December 26, 2003 Bam earthquake Mw 6.5 by using a temporal seismic network. The hypocenters distribute linearly over about 20 km in parallel with a line 3.5 km west of the geological Bam fault and extend from the south of Bam city to the heavily damaged area in the eastern part of the city including the historical mud brick citadel "Arg-e-Bam". Based on the hypocenter distribution, we propose a schematic 3-D structural model of a new fault that we have named the Arg-e-Bam fault. We suggest that the Bam earthquake occurred not in the Bam fault but in the Arg-e-Bam fault. Bam city is located just above northern part of the Arg-e-Bam fault and also on the rupture propagation direction from the asperity. This may be one of the main reasons why eastern part of Bam city suffered the heaviest damage.

本文言語英語
ページ(範囲)1-5
ページ数5
ジャーナルGeophysical Research Letters
32
9
DOI
出版ステータス出版済み - 5 16 2005

All Science Journal Classification (ASJC) codes

  • 地球物理学
  • 地球惑星科学(全般)

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