PDF Download HTML

[1]ZHENG Qiuyue,HUANG Jiangpei,WU Yuqin,et al.Analysis of the Gravity Variation Index before the Yangbi MS6.4 Earthquake and Inversion of the Field Source Characteristics[J].Journal of Seismological Research,2025,(01):22-31.[doi:10.20015/j.cnki.ISSN1000-0666.2025.0003 ]

Copy

Analysis of the Gravity Variation Index before the Yangbi M_S6.4 Earthquake and Inversion of the Field Source Characteristics

Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume: Number of periods: 2025 01 Page number: 22-31 Column: Public date: 2024-12-20

Title:: Analysis of the Gravity Variation Index before the Yangbi M_S6.4 Earthquake and Inversion of the Field Source Characteristics

Author(s):: ZHENG Qiuyue; HUANG Jiangpei; WU Yuqin; CHEN Zhengyu; LIU Dong; WANG Qinghua; (Yunnan Earthquake Agency,Kunming 650224,Yunnan,China)

Keywords:: gravity segment differences; quantitative analysis; gravity variations index; field-source inversion; the Yangbi M_S6.4 earthquake

CLC:: P315.726

DOI:: 10.20015/j.cnki.ISSN1000-0666.2025.0003

Abstract:: In this paper,we use the visualization method of the gravity segment differences and the quantitative indicators of gravity variation G and C,to process the mobile gravity data obtained by repeated measurements in Yunnan from 2016 to 2021 and study the gravity variation before the Yangbi M_S6.4 earthquake on May 21,2021.We further invert the distribution characteristics of seismic-related source in the study area.The results are as follows:①The scale and the direction of the gravity segment indicated more or less the migration direction of the subsurface material,and the gravity variation indicators G and C increased significantly before the Yangbi earthquake,then decreased rapidly after the earthquake.G and C can be used to evaluate the significance of the regional gravity changes in the area covered by the gravity observation network.②The inverted positions of the field-source mainly concentrated in the zone from the northern section of the Red River Fault Zone to the northwestern Yunnan,exhibiting a distribution pattern consistent with the Weixi-Qiaohou Fault and the Red River Fault Zone; this situation was possibly correlated with the migration of the deep material in the middle and upper Crust before the Yangbi earthquake.

References:: 范美宁,孙运生.2005.频率域中的欧拉方程[J].吉林大学学报:地球科学版,35(2):253-256.
Fan M N,Sun Y S.2005.Euler's equation in the wave number domain[J].Journal of Jilin University(Earth Science Edition),35(2):253-256.(in Chinese)
高倩,陈石.2015.基于欧拉反褶积方法计算川滇交界重力变化场源特征[J].地球物理学进展,30(2):503-509.
Gao Q,Chen S.2015.Based on the Euler deconvolution technique to determine the field source characteristics of gravity variation in the Boundary of Sichuan and Yunnan[J].Progress in Geophysics,30(2):503-509.(in Chinese)
胡敏章,郝洪涛,李辉,等.2019.地震分析预报的重力变化异常指标分析[J],中国地震,35(3):417-430.
Hu M Z,Hao H T,Li H,et al.2019.Quantitative analysis of gravity changes for earthquake prediction[J].Earthquake Research in China,35(3):417-430.(in Chinese)
黄江培,曹颖,刘东,等.2022.漾濞M_S6.4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 M_S6.4 earthquake[J].Seismology and Geology,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):511-520.
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):511-520.(in Chinese)
李见,张翔,杨志坚,等.2022.漾濞 6.4 级地震前后大理地区温泉水化学组分特征分析[J].华南地震,42(3):36-47.
Li J,Zhang X,Yang Z J,et al.2022.Analysis of chemical composition characteristics of hot spring water in Dali area before and after the Yangbi M6.4 earthquake[J].South China of Seismology,42(3):36-47.(in Chinese)
李静,万晓云,徐铭.2023.基于GRACE卫星数据和位错模型的2007年印尼明古鲁M_W8.4地震同震重力梯度信号对比分析[J].地震研究,46(4):521-528.
Li J,Wan X Y,Xu M.Comparative analysis of the coseismic gravity gradient signals of the 2007 Bengkulu,Indonesia M_W8.4 earthquake based on GRACE satellite data and the dislocation model[J].Journal of Seismological Research,46(4):521-528.(in Chinese)
李晓一,陈石,卢红艳.2017.离散时变重力数据的可视化、指标量定义与解释[J].地震学报,39(5):682-693.
Li X Y,Chen S,Lu H Y.2017.The index definition,interpretation and visualization of discrete time-variable gravity data[J].Acta Seismologica Sinica,39(5):682-693.(in Chinese)
刘东,郝洪涛,王青华,等.2021.2021年云南漾濞M_S6.4地震前重力变化[J].地震地质,43(5):1157-1170.
Liu D,Hao H T,Wang Q H,et al.2021.Gravity field change before the 2021 Yangbi M_S6.4 earthquake,Yunnan[J].Seismology and Geology,43(5):1157-1170.(in Chinese)
龙锋,祁玉萍,易桂喜,等.2021.2021年5月21日云南漾濞M_S6.4地震序列重新定位与发震构造分析[J].地球物理学报,64(8):2631-2646.
Long F,Qi Y P,Yi G X,et al.2021.Relocation of the M_S6.4 Yangbi earthquake sequence on May 21,2021 in Yunnan Province and its seismogenic structure analysis[J].Chinese Journal of Geophysics,64(8):2631-2646.(in Chinese)
王光明,吴中海,彭关灵,等.2021.2021年5月21日漾濞M_S6.4地震的发震断层及其破裂特征:地震序列的重定位分析结果[J].地质力学学报,27(4):662-678.
Wang G M,Wu Z H,Peng G L,et al.2021.Seismogenic fault and it's rupture characteristics of 21 May,2021 Yangbi M_S6.4 earthquake:analysis results from relocation of earthquake sequence[J].Journal of Geomechanics,27(4):662-678.(in Chinese)
王青华,郝洪涛,汪健,等.2019.云南地震流动重力监测网建设与映震能力分析[J].大地测量与地球动力学,39(3):317-324.
Wang Q H,Hao H T,Wang J,et al.2019.Construction and analysis of seismic response capability of gravimetric network in Yunnan[J].Journal of Geodesy and Geodynamics,39(3):317-324.(in Chinese)
王同庆,陈石,梁伟锋,等.2018.2016年门源M_S6.4地震前的区域重力场变化与定量参数分析[J].地震地质,40(2):349-360.
Wang T Q,Chen S,Liang W F,et al.2018.Variations of the gravity field and quantitative parameter analysis before the 2016 Menyuan M_S6.4 earthquake[J].Seismology and Geology,40(2):349-360.(in Chinese)
文翔,季灵运,向巍,等.2022.华南地区流动重力变化异常指标分析[J].华南地震,42(4):117-126.
Wen X,Ji L Y,Xiang W,et al.2022.Anomaly index analysis of mobile gravity changes in South China[J].South China of Seismology,42(4):117-126.(in Chinese)
向宏发,韩竹军,虢顺民,等.2004.红河断裂带大型右旋走滑运动与伴生构造地貌变形[J].地震地质,26(4):597-610.
Xiang H F,Han Z J,Guo S M,et al.2004.Large-scale dextral strike-slip movement and associated tectonic deformation along the Red River fault zone[J].Seismology and Geology,26(4):597-610.(in Chinese)
谢富仁,刘光勋,梁海庆.1994.滇西北及邻区现代构造应力场[J].地震地质,16(4):329-338.
Xie F R,Liu G X,Liang H Q.1994.Recent tectonic stress field in northwest Yunan province and its adjacent areas[J].Seismology and Geology,16(4):329-338.(in Chinese)
翟丽娜,贾晓东,焦明若,等.2020.基于欧拉反褶积方法计算辽宁地区重力变化场源特征[J].地震研究,43(2):388-393.
Zhai L N,Jia X D,Jiao R M.2020.Determine the field source characteristics of gravity variation in Liaoning based on the Euler deconvolution technique[J].Journal of Seismological Research,43(2):388-393.(in Chinese)
赵小艳,付虹.2014.2013年洱源M_S5.5和M_S5.0地震发震构造识别[J].地震学报,36(4):640-650.
Zhao X Y,Fu H.Seismogenic structure identification of the 2013 Eryuan M_S5.5 and M_S5.0 earthquake sequence[J].Acta Seismologica Sinica,36(4):640-650.(in Chinese)
赵云峰,祝意青,隗寿春,等.2023.2022年1月8日青海门源M_S6.9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 M_S6.9 earthquake on January 8,2022[J].Chinese Journal of Geophysics,66(6):2337-2351.(in Chinese)
郑秋月,王青华,刘东,等.2021.基于时变重力数据的川滇地区场源模型反演和解释[J].地震,41(1):205-218.
Zheng Q Y,Wang Q H,Liu Dong,et al.2021.Inversion and interpretation of field-source model based on the regional time-variable gravity variations of Sichuan-Yunnan[J].Earthquake,41(1):205-218.(in Chinese)
祝意青,张勇,杨雄,等.2022.时变重力在地震研究方面的进展与展望[J].地球与行星物理论评,53(3):278-291.
Zhu Y Q,Zhang Y,Yang X,et al.2022.Progress of time-varying gravity in seismic research[J].Reviews of Geophysics and Planetary Physics,53(3):278-291.(in Chinese)
祝意青,张勇,张国庆,等.2020.21世纪以来青藏高原大震前重力变化[J].科学通报,65(7):622-632.
Zhu Y Q,Zhang Y,Zhang G Q,et al.2020.Gravity variations preceding the large earthquakes in the Qinghai-Tibet Plateau from 21st century[J].Chinese Science Bulletin,65(7):622-632.(in Chinese)
Chen S,Liu M,Xing L L,et al.2016.Gravity increase before the 2015 M_W7.8 Nepal earthquake[J].Geophysical Research Letters,43(1):111-117.
Wang L H,Chen S,Zhuang J C,et al.2023.Gravity field changes reveal deep mass transfer before and after the 2013 Lushan earthquake[J].Communications Earth & Environment,4:194.
Xing L L,Liu Z W,Jia J G,et al.2021.Far-filed coseismic gravity changes related to the 2015 M_W7.8 Nepal(Gorkha)earthquake observed by superconducting gravimeters in China continent[J].Earth and Planetary Physics,5(2):141-148.
Yang J L,Chen S,Zhang B,et al.2021.Gravity observations and apparent density changes before the 2017 Jiuzhaigou M_S7.0 earthquake and their precursory significance[J].Entropy,23(12):1687.

Similar References:

Memo

Last Update: 2025-01-01