Calibration of a NORTH AMERICAN Gravimeter

概要

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In regard to a gravity survey over a wide area, uncertainties of scale values of gravi meters results more serious effects than accumulations of errors due to the drift and of accidental ones do. A NORTH AMERICAN Gravimeter was calibrated by comparing the results obtained with those by a GSI pendulum apparatus. Accuracy of the scale value thus obtained is about one thousandth. It is suggested that the scale value might vary secularly. In order to determine the gravity value at every station included in a gravity survey network with the accuracy of 0.1 milligal, it is necessary to establish some pendulum stations in the network, and to adjust the net making the scale value to be unknown.
日本測地学会の論文