Scintrex CG5 used for superconducting gravimeter calibration

作     者：Bruno Meurers 

作者机构：Department of Meteorology and GeophysicsUniversity of Vienna 

出 版 物：《Geodesy and Geodynamics》 (大地测量与地球动力学（英文版）)

年 卷 期：2018年第9卷第3期

页      面：197-203页

学科分类：08[工学] 081601[工学-大地测量学与测量工程] 0816[工学-测绘科学与技术] 

基　　金：Zentralanstalt fur Meteorologie and Geodynamik (ZAMG) 

主　　题：Superconducting gravimeter CG-5 Scintrex gravimeterScale factor Calibration accuracy M2 tidal parameter variation 

摘      要：The scale factor accuracy of superconducting gravimeters （SG） can be largely improved by a high repetition rate of calibration experiments. At stations where the availability of absolute gravimeters is limited, carefully calibrated spring gravimeters can be used for providing the reference signal assuming the irregular drift is properly adjusted. The temporal stability of the SG scale factor is assessable by comparing the temporal variations of M2 tidal parameters observed at neighboring SG sites or from synthetic tide models. Combining these methods reduces the SG scale factor error to a few 0.1%0. The paper addresses the particular procedure required for evaluating the calibration experiments based on spring gravimeters and presents results obtained at Conrad observatory （Austria）. Comparing the M2 amplitude factor modulation helped to reveal a SG scale factor offset of about 0.2%0 due to re-installation.