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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: 北海道北部地域の重力測定(その2)
Other Titles: Gravity survey in the northern Hokkaido region, northern Japan (II)
Authors: 本多, 亮1 Browse this author
笠原, 稔2 Browse this author
茂木, 透3 Browse this author
Authors(alt): Honda, Ryo1
Kasahara, Minoru2
Mogi, Toru3
Issue Date: 15-Mar-2009
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: 72
Start Page: 203
End Page: 218
Abstract: Although there are a plenty amount of gravity data over the northern part of Hokkaido (Dohoku region), most of them are not published yet. We have been performing gravity measurement in this region since 2007. Additionally, new data is added by new measurement during 2008. These new data clearly demonstrate the improvement of the gravity anomaly distribution over the Japan-sea side area of Dohoku region. Recurrent thrust type faultings which are dominant in this region generate positive Bouguer gravity anomalies over the hanging wall side, and horizontal gravity gradients above fault lines. Bouguer gravity anomaly map clearly indicates that the lineament of large horizontal gravity gradient coincides with the Horonobe fault. This may indicate the cumulative faulting on the same place.
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72号

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