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Title: 十勝岳重力観測網での2機種の相対重力計による測定値の比較
Other Titles: Comparison of gravity measurement values between two relative gravimeter models in Tokachi-dake volcano
Authors: 岡田, 和見1 Browse this author
高橋, 浩晃2 Browse this author
一柳, 昌義3 Browse this author
岡崎, 紀俊4 Browse this author
高木, 朗充5 Browse this author
Authors(alt): OKADA, Kazumi1
ICHIYANAGI, Masayoshi3
OKAZAKI, Noritoshi4
TAKAGI, Akimichi5
Issue Date: 19-Mar-2018
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: 81
Start Page: 27
End Page: 32
Abstract: Simultaneous relative gravity measurements using three SCINTREX CG5 and one LaCoste & Romberg G gravimeters were carried out in active Tokachi-dake volcano. No tares were identified in all measurement series. Differences in measured relative gravity values between the CG5#0033 and G#791 were less than 0.023 mGal for each observation point. Maximum difference between CG5#0552 and G#791, however, reached to 0 .196 mGal. Discrepancy between CG5#0552 and CG5#0033 was also recognized. Above differences seemed to correlate with relative gravity and altitude from reference to stations. These results suggested possible larger difference between individuals but lesser between gravimeter models. Investigation of possible error factors, e.g. spring constants, recovery characteristics of gravimeter tilting, and air proofing of chamber are required.
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81号

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