Study on the source rupture growth in earthquake swarms
地震群中震源破裂扩展研究
基本信息
- 批准号:07454106
- 负责人:
- 金额:$ 2.75万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (B)
- 财政年份:1995
- 资助国家:日本
- 起止时间:1995 至 1997
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
We installed broadband seismographs in an area with earthquake swarms : Kouzu island. Combined this record with the regional broadband network data, we tried to examine the growth of source rupture, especially the cascade-type of rupture growth or the coalescence of small scale ruptures into a larger scale rupture.During the term of project, we were able to get a lot of broadband records for several earthquake swarms which occcurred near Kouzu island and off Ito. In additon, we analyzed the source rupture process of larger (Ms 6 to 7 class) earthquakes with swarm-like nature which occurred in Kyushu-Ryukyu district. Combining these results with those obtained for Kouzu and Off-Ito events, we reached the conclusion that an earthquake swarm is strongly characterised by the complementarity of individual source areas. This may imply that the interaction between individual seismic sources is rather weak in earthquake swarms. Such a nature probably reflects the bulk distribution of small-scale faults and the characteristic source of stress accumulation. We sill plan a new proposal for this kind of subject in future.Other remarks we obtained are (1) the stress drop is relatively small but very dispersive, (2) this characteristics does not depend on whether the earthquake swarm frequently happens or it rarely happens, and (3) the size distribution of seismic sources reveals a hierarchical structure, the ratio of length-scale between lower and higher classes being about three.
我们在一个有地震群的地区安装了宽带地震仪:Kouzu岛。结合区域宽带台网资料,我们试图研究震源破裂的发展,特别是破裂发展的级联型或由小规模破裂合并成大规模破裂的情况。在项目期间,我们获得了许多发生在口津岛附近和伊东外海的震群的宽带记录。此外,还分析了九州-琉球地区6 ~ 7级大震群状震源破裂过程。将这些结果与Kouzu和Off-Ito事件的结果相结合,我们得出的结论是,震群的强烈特征是各个震源区的互补性。这可能意味着,在震群中,单个震源之间的相互作用相当弱。这种性质可能反映了小规模断层的大量分布和应力积累的特征来源。另外,我们还得到了以下几点认识:(1)应力降相对较小,但很分散;(2)这一特征与震群的频繁或罕见无关;(3)震源的大小分布具有层次结构。低等级和高等级之间的长度比例约为3。
项目成果
期刊论文数量(9)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
菊地 正幸・山中 佳子: "97年5月10日イラン東部の地震の遠地実体波解析" 地震学会講演予稿集. 2. B75 (1997)
Masayuki Kikuchi 和 Yoshiko Yamanaka:“1997 年 5 月 10 日伊朗东部地震的远程体波分析”日本地震学会会议记录 2. B75 (1997)。
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Kikuchi,M., and H.Kanamori: "Rupture process of the Kobe,Japan,earthquake of Jan.17.1995" J.Phys.Earth. 44. 429-436 (1996)
Kikuchi, M. 和 H.Kanamori:“1995 年 1 月 17 日日本神户地震的破裂过程”J.Phys.Earth。
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菊地正幸: "大都市における高密度強震計ネットワーク" 科学. 66. 841-844 (1996)
Masayuki Kikuchi:“大城市中的高密度强震地震仪网络”《科学》66. 841-844 (1996)。
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菊地 正幸・山中 佳子: "鹿児島県薩摩地方の地震の震源過程" 地震学会講演予稿集. 2. P81 (1997)
Masayuki Kikuchi 和 Yoshiko Yamanaka:“鹿儿岛县萨摩地区地震的震源过程”日本地震学会论文集 2. P81 (1997)。
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- 影响因子:0
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M.Kikuti: "Size dependence of moment-rate function" 29th General Assembly of the IASPEI. (Abstract). B87 (1997)
M.Kikuti:“矩率函数的大小依赖性”第 29 届 IASPEI 大会。
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KIKUCHI Masayuki其他文献
KIKUCHI Masayuki的其他文献
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{{ truncateString('KIKUCHI Masayuki', 18)}}的其他基金
A Study on Deep Convolutional Neural Network Considering the Mechanism of Visual Information Processing in the Brain
考虑大脑视觉信息处理机制的深度卷积神经网络研究
- 批准号:
17K00251 - 财政年份:2017
- 资助金额:
$ 2.75万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Elucidation of intracerebral representation of three dimensional object surface and perceptual characteristics for inside and outside of the surface
阐明三维物体表面的大脑内表征以及表面内部和外部的感知特征
- 批准号:
26330178 - 财政年份:2014
- 资助金额:
$ 2.75万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Characteristics of visual cognition for 3D object with convex/concave features
具有凸/凹特征的3D物体的视觉认知特征
- 批准号:
23500334 - 财政年份:2011
- 资助金额:
$ 2.75万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
A study on the mechanism of visual information processing in form channel laying the basis on figure-ground separation
基于图地分离的形式通道视觉信息处理机制研究
- 批准号:
19700250 - 财政年份:2007
- 资助金额:
$ 2.75万 - 项目类别:
Grant-in-Aid for Young Scientists (B)
Prompt Assessment of Earthquake Source and Strong Motion
震源及强震的及时评估
- 批准号:
11694056 - 财政年份:1999
- 资助金额:
$ 2.75万 - 项目类别:
Grant-in-Aid for Scientific Research (B).
Comparative Study on Source Processes of Recurrent Earthquakes
经常性地震震源过程比较研究
- 批准号:
10640399 - 财政年份:1998
- 资助金额:
$ 2.75万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Study on Rupture Initiation by Broadband Records for Local Earthquakes.
当地地震宽带记录的破裂引发研究。
- 批准号:
02640310 - 财政年份:1990
- 资助金额:
$ 2.75万 - 项目类别:
Grant-in-Aid for General Scientific Research (C)
相似海外基金
Systematic Study at Aftershocks and Source Rupture Process of Deep Earthquakes
深部地震余震及震源破裂过程的系统研究
- 批准号:
8410352 - 财政年份:1984
- 资助金额:
$ 2.75万 - 项目类别:
Continuing Grant