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Title: MT法による雌阿寒岳北麓の比抵抗構造探査:序報
Other Titles: Magnetotelluric survey on the northern foot of Meakandake volcano : preliminary report
Authors: 井上, 智裕1 Browse this author
橋本, 武志2 Browse this author
Authors(alt): INOUE, Tomohiro1
Issue Date: 19-Mar-2019
Publisher: 北海道大学大学院理学研究院
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: 82
Start Page: 25
End Page: 38
Abstract: We performed a broadband MT survey in the northern part of Mt. Meakandake, one of the active volcanoes in eastern Hokkaido to clarify the relationship between the subsurface electrical structure and the volcanic activities of this area. On the northeastern foot of Meakandake, remarkable crustal deformation from late 2016 through 2017. We planned a magnetotelluric survey to investigate the electrical structure across the deformation source. In this study, we describe the features of our MT data and show the 1-D models as a preliminary modeling. In the inversion, we only used a frequency range between about 0.1 and 100 Hz, in which the responses showed approximately a 1-D feature. The inverted 1-D models exhibited distinct low resistivity layer (1-10Ωm) at depths around a few hundred meters to 1 km at all sites. In addition, at the sites in the SE half of the survey line, another low resistivity layer of approximately 10Ωm was associated at a depth around 2-3 km.
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82号

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