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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: Poissonの関係式を用いた北海道北部地域における重力・磁気異常の地下構造解析
Other Titles: Subsurface structure analysis of gravity and magnetic anomalies in northern Hokkaido using Poisson's equation
Authors: 梶原, 崇憲1 Browse this author
茂木, 透2 Browse this author →KAKEN DB
Authors(alt): Kajiwara, Takanori1
Mogi, Toru2
Issue Date: 15-Mar-2008
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: 71
Start Page: 91
End Page: 101
Abstract: The Poisson's equation expresses a linear relationship between the gravity and magnetic potentials arising from a body with uniform density and magnetization contrast. The equation was extended to multi body case by repeatedly applying it within a small uniform body called the moving window. The moving-window Poisson's (MWP) analysis technique was proposed by Chandler et al. (1981) to apply to general complex structures. The correlation coefficient between the total magnetic intensity anomaly reduced to the pole and vertical derivative of the gravity anomaly, and the magnetization-to-density ratio were obtained by the MWP analysis. We investigated the profiles of these parameters for synthetic multi density and magnetic intensity structures and clarified how structure boundaries are delineated. The MWP was applied to the dataset of gravity anomalies and magnetic intensity anomalies collected in Northern Hokkaido. As the result, the MWP analysis put some constraints on density and magnetization structures modeled by a conventional analytical method such as the Talwani method.
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71号

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