基于流动重力控制的gPhone重力仪漂移修正方法研究  

Research on gPhone Gravimeter Drift Correction through Mobile Gravity Data Control

作　　者：张源[1,3] 崔庆谷 黑贺堂[1] 黄江培 周文敏 字承柱 陈阳 ZHANG Yuan;CUI Qinggu;HEI Hetang;HUANG Jiangpei;ZHOU Wenmin;ZI Chengzhu;CHEN Yang(Xiaguan Earthquake Monitoring Center Station of Yunnan Earthquake Agency,Dali 671000,Yunnan,China;Yunnan Earthquake Agency,Kunming 650224,Yunnan,China;Northwestern Yunnan Crustal Tectonics Observatory of CEA,Dali 671000,Yunnan,China)

机构地区：[1]云南省地震局下关地震监测中心站,云南大理671000 [2]云南省地震局,云南昆明650224 [3]云南大理滇西北地壳构造活动中国地震局野外科学观测研究站,云南大理671000

出　　处：《地震研究》2025年第4期685-692,共8页Journal of Seismological Research

基　　金：云南省地震局科技项目(CQ2-2023-08);国家自然科学基金(41874111);云南省地震局科技专项(2024ZX03).

摘　　要：针对gPhone连续重力仪漂移修正困难的情况,收集2019年1月—2024年5月云龙地震台gPhone连续重力仪观测数据,采用流动重力数据控制的方法进行漂移修正,并与目前常用的小波滤波和多项式拟合修正方法进行比较,修正后的结果显示:①5.4 a累计变化量从约1374×10-8 m/s 2降至69×10-8 m/s 2;②漂移修正结果与5阶多项式修正结果相似;③模型评价结果优于其他2种方法;④残差分布与5阶多项式修正结果接近。It is difficult to correct the drift of the data produced by the continuous gravimeter,gPhone.To solve this problem,we collect the data measured by gPhone at Yunlong Station from January 2019 to May 2024,and do the drift correction through mobile gravity data control.Then we compare the de-drifted data with the data corrected with the wavelet filtering method and the polynomial fitting method.We find that after drift correction through mobile gravity data control,the gravity data's cumulative change in 5.4 years decreases from about 1374×10-8 m/s 2 to 69×10-8 m/s 2.The de-drifted data are similar to the corrected data processed through 5th-order polynomial of the wavelet filtering method.The residual distribution through mobile gravity data control is close to the one of the data processed through 5th-order polynomial correction of the wavelet filtering method.The method of the drift correction through mobile gravity data control is evaluated to be superior to the other two methods.The drift correction method we proposed is practical,and it is a new approach for the drift correction of the continuous gravity data.

关 键 词：gPhone连续重力仪 流动重力 多项式 小波滤波 漂移修正 

分 类 号：P315.62[天文地球—地震学]