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北海道大学地球物理学研究報告 = Geophysical bulletin of Hokkaido University >
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Title: 北海道東部弟子屈地域の重力異常
Other Titles: Gravity Anomaly over the Teshikaga Region, Eastern Hokkaido
Authors: 本多, 亮1 Browse this author
市原, 寛2 Browse this author
神山, 裕幸3 Browse this author
茂木, 透4 Browse this author
中川, 光弘5 Browse this author
Authors(alt): Honda, Ryo1
Ichihara, Hiroshi2
kamiyama, Hiroyuki3
Mogi, Toru4
Nakagawa, Mitsuhiro5
Issue Date: 19-Mar-2011
Publisher: 北海道大学大学院理学研究院自然史科学部門(地球物理学)
Journal Title: 北海道大学地球物理学研究報告
Journal Title(alt): Geophysical bulletin of Hokkaido University
Volume: 74
Start Page: 21
End Page: 43
Abstract: We have been measuring gravity data over the Kutcharo area, Eastern Hokkaido (Doto Region). The main purpose of our data collection can be divided into two. The first is the earthquake fault, which runs through the rim of lake Kutcharo. Teshikaga region had been the only region which experienced large (MJMA > 6) inland earthquake, until the 2004 Rumoi-nanbu earthquake occurred. The second is the largest volcanic caldera in Japan, the Kutcharo caldera. In this paper, we made detailed Bouguer anomaly map over the Teshikaga region. The gravity anomaly map was improved by newly obtained data and the lake water correction. Our gravity survey was performed during these 5 years, around the earthquake fault and at the northern side of the Lake Kutcharo. The lake water gravity correction was calculated for the Lake Masyu and the Lake Kutcharo. We also made Digital Depth Model for the Lake Masyu and the Lake Kutchrao.
Type: bulletin (article)
Appears in Collections:北海道大学地球物理学研究報告 = Geophysical bulletin of Hokkaido University > 第74号

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