|本期目录/Table of Contents|

[1]李勇江,冯建林,何辛,等.不同平差方法分析山西地区重力场的变化特征[J].地震研究,2025,(04):650-657.[doi:10.20015/j.cnki.ISSN1000-0666.2025.0066 ]
　LI Yongjiang,FENG Jianlin,HE Xin,et al.Analysis of Shanxi Gravity Field and Its Variation Characteristics Using Different Adjustment Methods[J].Journal of Seismological Research,2025,(04):650-657.[doi:10.20015/j.cnki.ISSN1000-0666.2025.0066 ]
点击复制

不同平差方法分析山西地区重力场的变化特征(PDF/HTML)

《地震研究》[ISSN:1000-0666/CN:53-1062/P]

卷:
期数:
2025年04期
页码:
650-657
栏目:
重力场及其变化观测与地球科学应用专辑
出版日期:
2025-05-01

文章信息/Info

Title:
Analysis of Shanxi Gravity Field and Its Variation Characteristics Using Different Adjustment Methods
作者:
李勇江; 冯建林; 何辛; 刘冬阳; 姬计法; 董磊
(中国地震局地球物理勘探中心,河南 郑州 450002)
Author(s):
LI Yongjiang; FENG Jianlin; HE Xin; LIU Dongyang; JI Jifa; DONG Lei
(Geophysical Exploration Center,China Earthquake Administration,Zhengzhou 450002,Henan,China)
关键词:
山西断陷带;  贝叶斯平差;  经典平差;  时变重力场;  流动重力
Keywords:
the Shanxi Fault Subsidence Zone;  the Bayesian adjustment method;  the classical adjustment method;  time-varying gravity field;  mobile gravity
分类号:
P312.11
DOI:
10.20015/j.cnki.ISSN1000-0666.2025.0066
摘要:
为研究山西地区重力场变化特征,利用贝叶斯平差和经典平差法,分析2015—2020年山西地震重力监测网的流动重力观测数据,得到山西断陷带内不同时间尺度的重力场动态变化,并对2种方法的计算结果进行误差和精度分析。结果表明:①2种平差方法在点值精度上整体相当,但贝叶斯平差法的段差序列具备更好的随机分布特征,可以更好地消除由仪器的非线性漂移对结果带来的影响; ②2种方法得到的重力场变化形态一致,但变化量有所差异; ③山西断陷带内重力场变化相对稳定,累积重力场变化显示,区内变化趋势具备连续性,但不同部位重力场变化特征有所差异,位于中部和中南部的太原盆地、临汾盆地重力场变化量小,南北两端的变化量较大,且变化态势相反。
Abstract:
To study the characteristics of gravity field changes in Shanxi region,we use the Bayesian adjustment method and the classical adjustment method to calculate the data obtained in the period 2015-2020 through mobile gravity measurement of the Shanxi Gravimetric Network.Thus,we obtain the dynamical gravity changes on different time scales in the Shanxi Fault Subsidence Zone.Then we compare the error and the accuracy of the calculated data through the classical method with the error and the accuracy of the calculated data through the Bayesian method.The results indicate that the accuracy of the observed values at the observing points is equivalent in general.The sequence of the gravitational segment differences obtained through the Bayesian method has better random distribution,which can better eliminate the influence of the gravimeter's nonlinear drift on the data.The changes in the gravity field obtained by the two methods are consistent,but different in variation quantity.In the Shanxi Fault Subsidence Zone,the gravity field is stable.The cumulative gravity field changes expose that the variation tendency in Shanxi is continuous,but the gravity field variation in different parts is different.The gravity field variation in the Taiyuan Basin of the central part and in the Linfen Basin of the south-central part of the Shanxi region is small,while the variation in the north and the south of the Shanxi region is relatively large,but the variation in these two parts shows opposite tendency.

参考文献/References:


陈石,徐伟民,蒋长胜.2015.中国大陆西部重力场变化与强震危险性关系[J].地震学报,37(4):575-587.
Chen S,Xu W M,Jiang C S.2015.Relationship between gravity variation and seismic hazards in the western China[J].Acta Seismology Sinica,37(4):575-587.(in Chinese)
陈兆辉,王同庆,刘金钊,等.2018.南北地震带南段近期重力场变化与指标量分析[J].地震研究,41(3):480-486.
Chen Z H,Wang T Q,Liu J Z,et al.2018.Analysis of gravity field change and index quantity in southern part of the South-North Seismic Belt[J].Journal of Seismological Research,41(3):480-486.(in Chinese)
冯建林,檀玉娟,宋金跃,等.2020.河北唐山丰南4.5级地震前重力变化[J].大地测量与地球动力学,40(11):1126-1128.
Feng J L,Tan Y J,Song J Y,et al.2020.Gravity changes before the Fengnan M4.5 Earthquake in Tangshan,Hebei Province[J].Journal of Geodesy and Geodynamics,40(11):1126-1128.(in Chinese)
郭良迁,占伟,杨国华,等.2010.山西断陷带的近期位移和应变率特征[J].大地测量与地球动力学,30(4):36-42.
Guo L Q,Zhan W,Yang G H,et al.2010.Short-term displacement and characteristics of strain rate of Shanxi fault subsidence zone[J].Journal of Geodesy and Geodynamics,30(4):36-42.(in Chinese)
黄江培,曹颖,刘东,等.2022.漾濞MS6.4地震前后的重力变化特征及其孕震含义分析[J].地震地质,44(6):1557-1573.
Huang J P,Cao Y,Liu D,et al.2022.Analysis of gravity variation characteristics and its seimogenic meaning before and after Yangbi MS6.4 earthquake[J].Seismology and Egology,44(6):1557-1573.(in Chinese)
黄江培,杜家云,曹颖,等.2023.云南流动重力观测中相对重力仪漂移估计方法[J].地震研究,46(4):31-40.
Huang J P,Du J Y,Cao Y,et al.2023.The estimation method of the zero drift of the relative gravimeter in high-precision time-varying gravity observation in Yunnan[J].Journal of Seismological Research,46(4):31-40.(in Chinese)
李树鹏,胡敏章,祝意青,等.2024.2023年山东平原MS5.5地震前重力变化[J].地震地质,46(5):1172-1191.
Li S P,Hu M Z,Zhu Y Q,et al.2024.Gravity changes before the Pingyuan MS5.5 earthquake of 2023[J].Seismology and Egology,46(5):1172-1191.(in Chinese)
李延兴,张静华,郭良迁,等.2005.鄂尔多斯的逆时针旋转与动力学[J].大地测量与地球动力学,25(3):50-56.
Li Y X,Zhang J H,Guo L Q,et al.2005.Counterclockwise rotation and geodynamics of Ordos block[J].Journal of Geodesy and Geodynamics,25(3):50-56.(in Chinese)
王青华,赵云峰,陈兆辉,等.2020.2018年云南墨江M5.9地震前的重力变化[J].地震研究,43(2):382-387.
Wang Q H,Zhao Y F,Chen Z H,et al.2020.Gravity field change before the 2018 Mojiang M5.9 Earthquake,Yunnan[J].Journal of Seismological Research,43(2):382-387.(in Chinese)
徐伟民,石磊,陈石,等.2021.华北地区重力场变化特征与孕震模型研究[J].地震学报,43(4):441-452.
Chen W M,Shi L,Chen S,et al.2021.Gravity field characteristics and seismogenic model in North China[J].Acta Seismologica Sinica,43(4):441-452.(in Chinese)
杨雄,祝意青,赵云峰,等.2024.2020年伽师MS6.4地震前后重力变化[J].大地测量与地球动力学,44(3):277-282.
Yang X,Zhu Y Q,Zhao Y F,et al.2024.Gravity changes before and after the 2020 Jiashi MS6.4 Earthquake[J].Journal of Geodesy and Geodynamics,40(11):277-282.(in Chinese)
赵云峰,祝意青,隗寿春,等.2023.2022年1月8日青海门源MS6.9地震前重力场动态变化[J].地球物理学报,66(6):2337-2351.
Zhao Y F,Zhu Y Q,Wei S C,et al.2023.Dynamic gravity changes before the Menyuan,Qinghai MS6.9 earthquake on January 8,2022[J].Chinese Journal of Geophysics,66(6):2337-2351.(in Chinese)
祝意青,付广裕,梁伟锋,等.2015.鲁甸MS6.5、芦山MS7.0、汶川MS8.0地震前区域重力场时变[J].地震地质,37(1):319-330.
Zhu Y Q,Fu G Y,Liang W F,et al.2015.Earthquake predictions:spatital-temporal gravity changes before the Ludian MS6.5,Lushan MS7.0 and Wenchuan MS8.0 earthquakes[J].Seismology and Geology,37(1):319-330.(in Chinese)
祝意青,徐云马,吕弋培,等.2009.龙门山断裂带重力变化与汶川8.0级地震关系研究[J].地球物理学报,52(10):2538-2546.
Zhu Y Q,Xu Y M,Lyu Y P,et al.2009.Relations between gravity variation of Longmenshan Fault zone and Wenchuan MS8.0 earthquake[J].Chinese Journal of Geophysics,52(10):2538-2546.(in Chinese)
Chen S,Zhuang J C,Li X Y,et al.2019.Bayesian approach for network adjustment for gravity survey campaign:Methodology and model test[J].Journal of Geodesy,93(5):681-700.
Han J,Chen S,Lu H,et al.2024.A high-resolution time-variable terrestrial gravity field model of continental North China[J].Communications Earth & Environment,5:44.
Montagner J P,Juhel K,Barsuglia M,et al.2016.Prompt gravity signal induced by the 2011 Tohoku-Oki earthquake[J].Nature Communications,7:doi:10.1038/ncomms/3349.
Wang L,Chen S,Zhuang J,et al.2023.Gravity field changes reveal deep mass transfer before and after the 2013 Lushan earthquake[J].Communications Earth & Environment,4:194.


备注/Memo

备注/Memo:
收稿日期:2024-10-28.
基金项目:中国地震局地球物理勘探中心青年基金项目(YFGEC2023008).
第一作者简介:李勇江(1988-),工程师,主要从事相对重力数据采集分析工作.E-mail:651451568@qq.com.
更新日期/Last Update: 2025-05-01