ログイン
言語:

WEKO3

  • トップ
  • ランキング
To
lat lon distance
To

Field does not validate



インデックスリンク

インデックスツリー

メールアドレスを入力してください。

WEKO

One fine body…

WEKO

One fine body…

アイテム

  1. 131 地震研究所
  2. 東京大学地震研究所彙報
  3. 78
  4. 3
  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. 78
  5. 3

東海地域推定固着域内に発生する地震活動とその変化

https://doi.org/10.15083/0000032556
https://doi.org/10.15083/0000032556
f6250417-cd94-4622-a9f2-3b1b35857638
名前 / ファイル ライセンス アクション
IHO78305.pdf IHO78305.pdf (2.2MB)
Item type 紀要論文 / Departmental Bulletin Paper(1)
公開日 2012-03-29
タイトル
タイトル 東海地域推定固着域内に発生する地震活動とその変化
言語 ja
言語
言語 jpn
キーワード
主題Scheme Other
主題 Tokai earthquake
キーワード
主題Scheme Other
主題 Earthquake prediction
キーワード
主題Scheme Other
主題 Seismic quiescence
キーワード
主題Scheme Other
主題 Locked subduction
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 10.15083/0000032556
ID登録タイプ JaLC
その他のタイトル
その他のタイトル Spatio-Temporal Features of the Seismicity Occurring in the Assumed Locked Area of the Next Tokai Earthquake
著者 松村, 正三

× 松村, 正三

WEKO 125586

松村, 正三

Search repository
著者別名
識別子Scheme WEKO
識別子 125587
姓名 Matsumura, Shozo
著者所属
著者所属 防災科学技術研究所
著者所属
著者所属 National Reserch Institute for Earth Science and Disaster Prevention
抄録
内容記述タイプ Abstract
内容記述 The Tokai district is one of the most intensely monitored places in Japan with respect to seismic risk due to the anticipated Tokai earthquake. We have been performing continuous observations of microerathquakes in this region for more than two decades. The GPS observations to monitor ground surface deformation have been performed by the Geographical Survey Institute since 1997. Recently, unusual signal changes have been found nearly simultaneously by both monitoring operations. First, a small but significant quiescence was detected in seismicity within the subducted Philippine Sea slab, which commenced in August 1999. A similar quiescence was also detected in other regions, such as seismicity within the overriding plate and seismic clusters beneath Lake Hamana. All of these activities are considered to be caused by the interaction of two plates, i.e., due to the locked subduction of the Philippine Sea slab. The seismicity change was represented by a spatial pattern with a decrease/increase of earthquakes compared to the standard one. We recognized that the characteristic pattern appears at the present. Following this seismic event, GPS monitoring found a gradual movement of the ground surface, which deviates from the previous trend, and was analyzed to be due to a slow-slip occurring on the plate interface beneath Lake Hamana. All of these anomalous events happened in the period from the late 1990s to 2000, and have continued to date. Such slowand small changes in crustal activity seem not to be directly bound up with the forthcoming megathrust, that is, the next Tokai earthquake, but lead us to imagine a progress of change in the locked state as follows. In the early or middle stage of locked subduction, the plate coupling should be sustained in the entire locked region. In the later or critical stage, the inhomogeneity in the strength of locking may emerge explicitly. The latter will result in a situation in which the stress sustained at a relatively weakly locked zone is released, and be concentrated. The pattern change in seismicity may agree with this interpretation. If this is the case, it means there is steady progress being made toward the final failure. It is indispensable not only to carefully monitor crustal activities, but also to build a consistent model to interpret all of the unusual evidence detected to forecast the next Tokai earthquake.
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 78, 号 3, p. 269-282, 発行日 2003
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
戻る
0
views
See details
Views

Versions

Ver.1 2021-03-01 22:07:44.021689
Show All versions

Share

Mendeley Twitter Facebook Print Addthis

Cite as

エクスポート

OAI-PMH
  • OAI-PMH JPCOAR 2.0
  • OAI-PMH JPCOAR 1.0
  • OAI-PMH DublinCore
  • OAI-PMH DDI
Other Formats
  • JSON
  • BIBTEX

Confirm


Powered by WEKO3


Powered by WEKO3