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Seismic refraction and wide-angle reflection exploration by JARE-43 on Mizuho Plateau, East Antarctica
https://doi.org/10.15094/00003118
https://doi.org/10.15094/00003118546180c2-fd92-480b-bd8a-2d619e6bd2ea
名前 / ファイル | ライセンス | アクション |
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KJ00000044112 (3.2 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 2003-10-01 | |||||
タイトル | ||||||
タイトル | Seismic refraction and wide-angle reflection exploration by JARE-43 on Mizuho Plateau, East Antarctica | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | velocity model,Antarctica,Mizuho Plateau,crust | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | departmental bulletin paper | |||||
ID登録 | ||||||
ID登録 | 10.15094/00003118 | |||||
ID登録タイプ | JaLC | |||||
ページ属性 | ||||||
内容記述タイプ | Other | |||||
内容記述 | P(論文) | |||||
著者名(英) |
Miyamachi, Hiroki
× Miyamachi, Hiroki× Toda, Shigeru× Matsushima, Takeshi× Takada, Masamitsu× Watanabe, Atsushi× Yamashita, Mikiya× Kanao, Masaki |
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著者所属(英) | ||||||
en | ||||||
Department of Earth and Environmental Sciences, Faculty of Science,Kagoshima University/Department of Earth Sciences, Faculty of Education,Aichi University of Education/Institute of Seismology and Volcanology, Faculty of Sciences, Kyushu University/Institute of Seismology and Volcanology, Graduate School of Science,Hokkaido University/Department of Earth and Planetary Sciences, Graduate School of Sciences, Kyushu University/Department of Polar Science, The Graduate University for Advanced Studies/National Institute of Polar Research | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | The 43rd Japanese Antarctic Research Expedition (JARE-43) carried out seismic exploration experiments on Mizuho Plateau,East Antarctica,in the austral summer season of ,2001-2002. The exploration was composed of seven large explosions and 161seismic stations distributed along the 151 km-long seismic line.The first arrival time data are analyzed by a refraction method.It is found that the ice sheet is composed of two layers:the upper layer with P wave velocity of 2.7-2.9 km/s has thickness of 35-45 m,and the lower layer with P wave velocity of 3.7-3.9 km/s continues to the bedrock.Lateral velocity variation in the upper-most crust is revealed:P wave velocity for the upper-most crust in the southern and central parts is 6.1-6.2 km/s and that in the northern part is5.9 km/s. This result implies that the geological boundary observed along the coast in the Lu tzow-Holm Bay and Prince Olav Coast regions possibly continues to the inland area.The S wave velocity is also obtained to be roughly 3.5km/s for the whole upper-most crust.Travel time analysis of two distinct reflection phases shows two horizontal reflecting planes located at 19 and 40km depth; the latter corresponds to the Moho discontinuity. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA1130866X | |||||
書誌情報 |
Polar geoscience 巻 16, p. 1-21, 発行日 2003-10 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |