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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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SCINTREX CG5相対重力計S/N130141025の検定(その1): 道内重力点での検定測定

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Title: SCINTREX CG5相対重力計S/N130141025の検定(その1): 道内重力点での検定測定
Other Titles: Calibration of SCINTREX CG5 Gravimeter S/N130141025 (No.1): Gravity Measurements for Calibration in Hokkaido
Authors: 高橋, 浩晃1 Browse this author →KAKEN DB
重藤, 迪子2 Browse this author
山口, 照寛3 Browse this author
岡崎, 紀俊4 Browse this author
Authors(alt): TAKAHASHI, Hiroaki1
YAMAGUCHI, Teruhiro3
OKAZAKI, Noritoshi4
Issue Date: 19-Mar-2014
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: 77
Start Page: 15
End Page: 23
Abstract: Relative gravity measurements with SCINTREX CG5 gravimeter S/N130141025 for instrument calibration were carried out at fundamental, first order gravity benchmarks, and triangulation point in Hokkaido. Observed relative gravity value between ObihiroFGS and ShintotsukawaFGS by CG5 was 76 mGal, which is same as that of value determined by Geospatial Information Authority of Japan in the order of 10-4. Estimated correction coefficient was 1.00020. Simultaneous measurement by three gravimeters at Teine triangulation point showed 231 mGal relative gravity value from MinamiShinkawa benchmark within 0.120 mGal difference between instruments. This suggested that estimation of correction coefficients for several hundreds to a thousand mGal difference should be conducted for precise calibration. Drift rate fluctuation shown in continuous measurement data also should be evaluated in future.
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77号

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