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第84号 >


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Title: 臨時観測によるニセコ火山群の地震活動
Other Titles: Seismic activity in Niseko volcano group by temporal observation data
Authors: 一柳, 昌義1 Browse this author
高橋, 浩晃2 Browse this author →KAKEN DB
大園, 真子3 Browse this author →KAKEN DB
Authors(alt): ICHIYANAGI, Masayoshi1
Issue Date: 26-Mar-2021
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: 84
Start Page: 21
End Page: 28
Abstract: Seismic activity in Niseko volcano group was investigated using temporal and permanent seismic observation data. Three temporal seismic stations had been operated from November 2019 to October 2020. Location of precise hypocenters are calculated with optimum velocity structure estimated in this study. The number of earthquakes detected was 53, which is much larger than the JMA unified catalog. This indicates that there is existence of seismic activity in this region. Detected hypocenters distribute along the mountain ridge in west-east direction. In addition, relatively large earthquakes occur near Nitonupuri and Iwaonupuri volcano edifices. Temporal seismic observation around this volcanic region and its detailed analysis reveal the existence of local seismic activities.
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84号

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