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  1. 131 地震研究所
  2. 東京大学地震研究所彙報
  3. 62
  4. 4
  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. 62
  5. 4

Report on DELP 1985 Cruises in the Japan Sea : Part II : Seismic Refraction Experiment Conducted in the Yamato Basin, Southeast Japan Sea

https://doi.org/10.15083/0000032832
9351e52e-718a-48ea-b256-7bd24ec26801
名前 / ファイル ライセンス アクション
ji0624002.pdf ji0624002.pdf (1.6 MB)
Item type 紀要論文 / Departmental Bulletin Paper(1)
公開日 2008-05-30
タイトル
タイトル Report on DELP 1985 Cruises in the Japan Sea : Part II : Seismic Refraction Experiment Conducted in the Yamato Basin, Southeast Japan Sea
言語 en
言語
言語 eng
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 10.15083/0000032832
ID登録タイプ JaLC
その他のタイトル
その他のタイトル DELP 1985年度日本海研究航海報告 : II. 大和海盆における屈折法地震探査
著者 Hirata, Naoshi

× Hirata, Naoshi

WEKO 127856

Hirata, Naoshi

Search repository
Kinoshita, Hajimu

× Kinoshita, Hajimu

WEKO 127857

Kinoshita, Hajimu

Search repository
Suyehiro, Kiyoshi

× Suyehiro, Kiyoshi

WEKO 127858

Suyehiro, Kiyoshi

Search repository
Suyemasu, Makoto

× Suyemasu, Makoto

WEKO 127859

Suyemasu, Makoto

Search repository
Matsuda, Naoko

× Matsuda, Naoko

WEKO 127860

Matsuda, Naoko

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Ouchi, Toru

× Ouchi, Toru

WEKO 127861

Ouchi, Toru

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Katao, Hiroshi

× Katao, Hiroshi

WEKO 127862

Katao, Hiroshi

Search repository
Koresawa<, Sadayuki

× Koresawa<, Sadayuki

WEKO 127863

Koresawa<, Sadayuki

Search repository
Nagumo, Shozaburo

× Nagumo, Shozaburo

WEKO 127864

Nagumo, Shozaburo

Search repository
著者別名
識別子
識別子 127865
識別子Scheme WEKO
姓名
姓名 平田, 直
著者別名
識別子
識別子 127866
識別子Scheme WEKO
姓名
姓名 木下, 肇
著者別名
識別子
識別子 127867
識別子Scheme WEKO
姓名
姓名 末広, 潔
著者別名
識別子
識別子 127868
識別子Scheme WEKO
姓名
姓名 末益, 誠
著者別名
識別子
識別子 127869
識別子Scheme WEKO
姓名
姓名 松田, 直子
著者別名
識別子
識別子 127870
識別子Scheme WEKO
姓名
姓名 大内, 徹
著者別名
識別子
識別子 127871
識別子Scheme WEKO
姓名
姓名 片尾, 浩
著者別名
識別子
識別子 127872
識別子Scheme WEKO
姓名
姓名 是澤, 定之
著者別名
識別子
識別子 127873
識別子Scheme WEKO
姓名
姓名 南雲, 昭三郎
著者所属
著者所属 東京大学理学部
著者所属
著者所属 現在カリフォルニア大学ロスアンゼルス校
著者所属
著者所属 千葉大学理学部
著者所属
著者所属 神戸大学理学部
著者所属
著者所属 東京大学地震研究所
抄録
内容記述タイプ Abstract
内容記述 Refraction seismic study was designed to constrain the structure of the Yamato Basin, the southeastern part of the Japan Sea using 20 OBS's, five tons of explosives and airgun. The Yamato Basin has a steep velocity gradient in the upper part of the crust as commonly observed in the oceanic crust. The Moho depth is determined at around 18 km subsurface, which is nearly twice as deep as that of the normal oceanic crust. The apparent Pn velocity is 8.0-8.1 km/s along two azimuthal direction which were selected as being parallel to the min. and max. directions of the Pn anisotropy proposed by Okada et at. (1978).
抄録
内容記述タイプ Abstract
内容記述 大和海盆下の地殻及び上部マントル構造を調べるために,高密度の屈折法地震探査を行なった.測線A(北東-南西方向,測線長230km)およびこれに直交する測線B(北西-南東方向,測線長130km)に20台の海底地震計を投入した.音源には154発の火薬発破(最大薬量500kg,総計5トン)を用い,さらに全測線上でエアガンをかけた.大和海盆の地殻は大きな速度勾配をもち,海洋性地殻に似た速度構造をもっている.しかし,モホ面の深さは約18kmで通常の海洋地殻の2倍近い厚さがあり,典型的な海洋地殻とも大陸性地殻とも言えない.従来報告されていたPn異方性の速度最大および最小方向に平行に配置したAB両測線で,Pnみかけ速度はともに8.0-8.1km/sであった.また,大和海盆に広く分布すると言われていた3.5km/s層は一部の観測点でしか観測されず,局所的にしか存在しないと考えられる.
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 62, 号 4, p. 347-365, 発行日 1988-03-31
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 453
主題Scheme NDC
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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