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  1. 131 地震研究所
  2. 東京大学地震研究所彙報
  3. 83
  4. 1
  1. 0 資料タイプ別
  2. 30 紀要・部局刊行物
  3. 東京大学地震研究所彙報
  4. 83
  5. 1

The Gutenberg-Richter Relationship vs. the Characteristic Earthquake Model: Effects of different sampling methods

https://doi.org/10.15083/0000032462
https://doi.org/10.15083/0000032462
6b5a2ac4-613f-42f4-85b0-c7ef40b5327e
名前 / ファイル ライセンス アクション
IHO83106.pdf IHO83106.pdf (1.5MB)
Item type 紀要論文 / Departmental Bulletin Paper(1)
公開日 2008-09-30
タイトル
タイトル The Gutenberg-Richter Relationship vs. the Characteristic Earthquake Model: Effects of different sampling methods
言語 en
言語
言語 eng
キーワード
主題Scheme Other
主題 the Characteristic Earthquake Model
キーワード
主題Scheme Other
主題 the Gutenberg-Richter relationship
キーワード
主題Scheme Other
主題 Late Quaternary fault
キーワード
主題Scheme Other
主題 active fault
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ departmental bulletin paper
ID登録
ID登録 10.15083/0000032462
ID登録タイプ JaLC
著者 Ishibe, Takeo

× Ishibe, Takeo

WEKO 123943

Ishibe, Takeo

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Shimazaki, Kunihiko

× Shimazaki, Kunihiko

WEKO 123944

Shimazaki, Kunihiko

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抄録
内容記述タイプ Abstract
内容記述 The Gutenberg-Richter (G-R) relationship log n=a-bM has been used to describe regional seismicity. However, a number of studies report that the Gutenberg-Richer relationship does not hold for seismicity around late Quaternary faults or active faults during the entire seismic cycle. In this paper, we first report our study on the influences of different catalog intervals on seismicity analyses around six major strike-slip faults in southwest Japan studied by Stirling et al. in 1996. As a result, we find no essential differences between two observed annual occurrence rates estimated from the different catalog intervals, with the exception of the Tanna fault where the characteristic earthquake, i.e., the Kita-Izu earthquake (M=7.3), occurred in 1930. The results obtained after excluding all events in 1930 show much lower seismicity than that predicted by the G-R relationship. If the G-R relationship holds for one complete earthquake cycle, seismicity during a time-interval including occurrence time of the characteristic earthquake and its series of aftershocks should show much higher seismicity than that predicted by the G-R relationship, because the highest activity during a seismic cycle occurs in that period. However, the actual seismicity over 60 years including the 1930 occurrence shows, at most, activity equal to that predicted by the G-R relationship for the Tanna fault. We also discuss the bias caused by different spatial sampling methods. We propose a new method, which is applicable not only to strike-slip but also to dip-slip faults, to extract seismicity around active faults and for application to the six strike-slip fault systems using the unified Japan Meteorological Agency catalog and fault data that have been improved in recent years. The results show that the observed seismicity is lower than that predicted by the G-R relationship for all fault systems including the Yamasaki fault system, which showed higher seismicity than predicted by the previous study. These results hold even if the sampling volume is doubled.
書誌情報 東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo

巻 83, 号 1, p. 131-151, 発行日 2008
ISSN
収録物識別子タイプ ISSN
収録物識別子 00408972
書誌レコードID
収録物識別子タイプ NCID
収録物識別子 AN00162258
フォーマット
内容記述タイプ Other
内容記述 application/pdf
日本十進分類法
主題Scheme NDC
主題 51.1
出版者
出版者 東京大学地震研究所
出版者別名
Earthquake Research Institute, University of Tokyo
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