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古地震の震度指示者としての琵琶湖タービダイト
http://hdl.handle.net/10091/3814
http://hdl.handle.net/10091/38149dcef214-e850-43a5-861c-2fbfd0d472c6
名前 / ファイル | ライセンス | アクション |
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chishitu -39.pdf (3.1 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2009-12-24 | |||||
タイトル | ||||||
言語 | ja | |||||
タイトル | 古地震の震度指示者としての琵琶湖タービダイト | |||||
言語 | ||||||
言語 | jpn | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
その他(別言語等)のタイトル | ||||||
その他のタイトル | Turbidites in Lake Biwa as indicators of intensity of paleoearthquakes | |||||
著者 |
井内, 美郎
× 井内, 美郎× 衣笠, 善博× 公文, 富士夫× 安松, 貞夫× 中野, 聴志× 志岐, 常正 |
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信州大学研究者総覧へのリンク | ||||||
氏名 | 公文, 富士夫 | |||||
URL | http://soar-rd.shinshu-u.ac.jp/profile/ja.ZUchOUkh.html | |||||
出版者 | ||||||
出版者 | 日本地質学会 | |||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 地質学論集 39: 61-70(1993) | |||||
書誌情報 |
地質学論集 巻 39, p. 61-70, 発行日 1993-03 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Sediments and other geological materials retain evidences for paleoearthquakes for longer time than historical earthquakes. We estimate the ages of some 20 turbidites within 3 meters of the lake bottom based on sedimentation rates at four drilled stations. In addition, We calculate the intensities of historical earthquakes in the vicinity of the lake based on the empirical equations among intensity, epicentral distance and earthquake magnitude. We show that the ages of turbidites coincide with the ages of paleoearthquakes for which estimated intensities are higher than the middle of Ⅳ in Japan Meteorological Agency's(JMA) Scale, whose acceleration is equivalent to lower limit of Ⅶ in the Modified Mercalli (MM) Scale. This result indicates that turbidites are valid criteria for paleoearthquake, providing in addition an estimation of intensity. | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | 琵琶湖の西岸付近の湖底堆積物には肉眼で確認される砂層以外にもシルトを主とする細粒の粒子からなる湖底地滑りを起源とする堆積物が多くはさまれている.これらのタービダイトの堆積年代を重量堆積速度を基に推定した結果,歴史地震と対応する事が明らかになった.湖底地滑りを起こした地震の震度の下限値は,琵琶湖においてほ気象庁震度階のⅣとVのそれぞれの下限値の中間である.この震度を加速度表示した場合,約44galに相当する.これはMM震度階のⅥとⅦの境界の加速度に相当する. | |||||
資源タイプ(コンテンツの種類) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Article | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 03858545 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AN00141779 | |||||
出版タイプ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 |