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  1. 防災科研関係論文

地震学的探査によるモホ不連続面の検出-近畿地方を例として-

https://nied-repo.bosai.go.jp/records/2708
https://nied-repo.bosai.go.jp/records/2708
9f65a9f5-218e-4e54-b423-03ae5767a68a
Item type researchmap(1)
公開日 2023-04-27
タイトル
言語 ja
タイトル 地震学的探査によるモホ不連続面の検出-近畿地方を例として-
タイトル
言語 en
タイトル Detecting of the Moho Discontinuities Using Seismological Surveys: A Case in the Kinki District
言語
言語 jpn
著者 汐見勝彦

× 汐見勝彦

ja 汐見勝彦

en Shiomi, K

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松原 誠

× 松原 誠

ja 松原 誠

en M. Matsubara

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小原一成

× 小原一成

ja 小原一成

en K. Obara

Search repository
抄録
内容記述タイプ Other
内容記述 By the end of the last century, the rough configuration of the Moho discontinuity beneath the Japan Islands had been revealed based on explosion surveys and natural earthquake observations. Recently, however, some researchers have pointed out that local roughness of the Moho geometry or relative location between continental and oceanic Moho might provide important knowledge about the source regions of large earthquakes. <br> Within the southern portion of the Kinki district, the Philippine Sea plate subducts beneath the continental plate at the Nankai Trough. We detect P-to-S converted wave energy from the Moho velocity discontinuity beneath the Kinki district with receiver function analysis, and compare the results of other recent investigations of the depth of Moho. Both oceanic and continental Moho discontinuities are detected in not only our receiver function analysis but also active-source seismic exploration survey and travel-time tomography analysis. The inferred depths of the subducting oceanic Moho beneath the Kii Peninsula, the southern Kinki district, and the continental Moho beneath the northern Kinki correspond well with each other. However, beneath the central Kinki district, no significant converted phases are observed corresponding to the Moho depth inferred from the travel-time analyses. We interpret that no sharp velocity discontinuity exists around the Moho in the central Kinki district.
言語 en
書誌情報 ja : 地質学雑誌
en : Journal of Geography

巻 117, 号 1, p. 45-58, 発行日 2008
出版者
言語 ja
出版者 東京地学協会
出版者
言語 en
出版者 Tokyo Geographical Society
ISSN
収録物識別子タイプ ISSN
収録物識別子 1884-0884
DOI
関連識別子 10.5026/jgeography.117.45
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