PDF Download HTML

[1]LIU Jie,JI Lingyun,SHI Fuqiang,et al.Characterization of the Observed Geophysical Anomalies Prior to Strong Earthquakes in Chinese Mainland[J].Journal of Seismological Research,2025,(02):300-311.[doi:10.20015/j.cnki.ISSN1000-0666.2025.0032 ]

Copy

Characterization of the Observed Geophysical Anomalies Prior to Strong Earthquakes in Chinese Mainland

Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume: Number of periods: 2025 02 Page number: 300-311 Column: Public date: 2025-02-10

Title:: Characterization of the Observed Geophysical Anomalies Prior to Strong Earthquakes in Chinese Mainland

Author(s):: LIU Jie¹; 2; JI Lingyun³; SHI Fuqiang¹; 2; HU Nan¹; 2; QI Yuping⁴; WANG Guangming⁵; ZHANG Lifeng⁶; GUO Lei⁷; JIANG Jiajia⁸; (1.Shaanxi Earthquake Agency,Xi'an 710068,Shaanxi,China)(2.Shaanxi Xi'an Deep Earth Structure Observation and Research Station of China EarthquakeAdministration,Xi'an 710068,Shaanxi,China)(3.The Second Monitoring and Application Center,China Earthquake Administration,Xi'an 710054,Shaanxi,China)(4.Sichuan Earthquake Agency,Chengdu 610041,Sichuan,China)(5.Yunnan Earthquake Agency,Kunming 650224,Yunnan,China)(6.Qinghai Earthquake Agency,Xining 810001,Qinghai,China)(7.Hebei Earthquake Agency,Shijiazhuang 050021,Hebei,China)(8.Gansu Earthquake Agency,Lanzhou 050021,Gansu,China)

Keywords:: strong earthquakes in Chinese Mainland; geophysical field; temporal and spatial characteristics; evolutionary patterns

CLC:: P315.72

DOI:: 10.20015/j.cnki.ISSN1000-0666.2025.0032

Abstract:: In order to find out the characteristics and patterns of the anomalies before strong earthquakes,we sort out 975 geophysical anomalies before 33 strong earthquakes(M_S≥6.0)in Chinese Mainland from 1966 to 2017.Among these anomalies,there are 435 underground fluid anomalies,153 electromagnetic anomalies,282 deformation anomalies and 105 other anomalies.Underground fluid anomalies are mainly characterized by water radon,water level,and water temperature.Electromagnetic anomalies are mainly characterized by ground resistivity and geomagnetism.Deformation anomalies are mainly characterized by inclination,leveling,and volumetric strain.The analysis shows:①Anomalies evolved in distinct stages before the earthquakes.Trend-type anomalies were dominant in the middle and long term,and abrupt-variation anomalies were dominant in the short term.②The number and the feature of the anomalies in different regions differed.The fluid and deformation anomalies were dominant in the short-term stage in the northern and central parts of the North-South Seismic Belt.The Hydrogeological anomalies were dominant in the southern part of the North-South Belt.The fluid and electromagnetic anomalies were dominant in the inner part of the Qinghai-Tibetan Block.The number of these anomalies continuously grew.The fluid and electromagnetic anomalies were dominant in the northern edge of the North China Craton.The number of these anomalies increased first,then decreased.In the surrounding areas of the South China Craton,geophysical anomalies were mainly quasi-synchronous.In the light of the mechanism of typical anomalies,the evolutionary patterns of the anomalies in long term,medium term,short term,and impending period were discussed.For some anomalies like water level anomaly,earth resistivity anomaly,and deformation velocity anomaly,their evolutionary characteristics in each stage were consistent with the variation of the stress conditions according to the sub-instability model.

References:: 陈棋福.2002a.中国震例(1992—1994)[M].北京:地震出版社.
Chen Q F.2002a.Earthquake cases in China(1992-1994)[M].Beijing:Seismological Press.(in Chinese)
陈棋福.2002b.中国震例(1995—1996)[M].北京:地震出版社.
Chen Q F.2002b.Earthquake cases in China(1995-1996)[M].Beijing:Seismological Press.(in Chinese)
陈棋福.2003.中国震例(1997—1999)[M].北京:地震出版社.
Chen Q F.2003.Earthquake cases in China(1997-1999)[M].Beijing:Seismological Press.(in Chinese)
陈棋福.2008.中国震例(2000—2002)[M].北京:地震出版社.
Chen Q F.2008.Earthquake cases in China(2000-2002)[M].Beijing:Seismological Press.(in Chinese)
呼楠,石富强,季灵运,等.2024.中国大陆强震发生前地震活动增强统计特征分析[J].地震学报,46(2):226-241.
Hu N,Shi F Q,Ji L Y,et al.2024.Statistical charateristics of enhanced seismicity before strong earthquakes based on earthquakes cases in Chinese mainland[J].Acta Seismologica Sinica,46(2):226-241.(in Chinses)
蒋海昆,苗青壮,吴琼,等.2009.基于震例的前兆统计特征分析[J].地震学报,31(3):245-259.
Jiang H K,Miao Q Z,Wu Q,et al.2009.Analysis on statistical features of precursor based on earthquake cases in China mainland[J].Acta Seismologica Sinica,31(3):245-259.(in Chinses)
蒋海昆.2014.中国震例(2003—2006)[M].北京:地震出版社.
Jiang H K.2014.Earthquake cases in China(2003-2006)[M].Beijing:Seismological Press.(in Chinese)
蒋海昆.2018a.中国震例(2007—2010)[M].北京:地震出版社.
Jiang H K.2018a.Earthquake cases in China(2007-2010)[M].Beijing:Seismological Press.(in Chinese)
蒋海昆.2018b.中国震例(2011—2012)[M].北京:地震出版社.
Jiang H K.2018b.Earthquake cases in China(2011-2012)[M].Beijing:Seismological Press.(in Chinese)
李世念,马瑾,汲云涛,等.2021.亚失稳准动态及同震过程变形场时空演化特征—实验与分析[J].地震地质,43(1):1-19.
Li S N,Ma J,Ji Y T,et al.2021.The spatio-temporal evolution of the fault deformation during the meta-instability quasi-dynamic phase and the coseismic stage:A view from laboratory[J].Seismology and Geology,43(1):1-19.(in Chinese)
刘耀炜,2006.我国地震地下流体科学40年探索历程回顾[J].中国地震,22(3):222-235.
Liu Y W.2006.Review of the research progress on the seismological science of underground fluid in China during last 40 years[J].Earthquake Research in China,22(3):222-235.(in Chinese)
马瑾,Sherman S I,郭彦双.2012.地震前亚失稳应力状态的识别——以5°拐折断层变形温度场演化的实验为例[J].中国科学:地球科学,42(5):633-645.
Ma J,Sherman S I,Guo Y S.2012.Identification of meta-instable stress state based on experimental study of evolution of the temperature field during stick-slip instability on a 5° bending fault[J].Scientia Sinica Terrae,42(5):633-645.(in Chinese)
孙小龙,王俊,向阳,等.2016.基于《中国震例》的地下流体异常特征统计分析[J].地震,36(4):120-130.
Sun X L,Wang J,Xiang Y,et al.2016.Statistical characteristics of subsurface fluid precursors based on Earthquake cases in China[J].Earthquake,36(4):120-130.(in Chinese)
王俊,黄显良,刘朝君,等.2020.2014年安徽霍山M_S4.3地震前地下流体典型异常特征分析[J].中国地震,36(1):67-79.
Wang J,Huang X L,Liu Z J,et al.2020.Analysis of typical anomalies observed from underground fluid before 2014 Huoshan M_S4.3 earthquake[J].Earthquakes Research in China,36(1):67-79.(in Chinese)
解滔,卢军.2023.中国中强地震前地电阻率中短期异常及其可能原因[J].中国地震,39(1):45-63.
Xie T,Lu J.2023.Middle-short term abnormal characteristics of apparent resistivity before strong earthquakes in China and its possible mechanism[J].Earthquake Research in China,39(1):45-63.(in Chinese)
薛艳,张小涛,晏锐,等.2022.2022年四川泸定M_S6.8地震前地震活动与地球物理场异常回顾与讨论[J].中国地震,38(4):601-612.
Xue Y,Zhang X T,Yan R,et al.2022.Review and discussion on seismic activity and geophysical observation anomalies before the 2022 Luding M_S6.8 earthquake in Sichuan,China[J].Earthquakes Research in China,38(4):601-612.(in Chinese)
晏锐,黄辅琼,顾瑾平.2004.中国大陆7级强震前地下流体前兆时空特征[J].地震,24(1):126-131.
Yan R,Huang F Q,Gu J P.2004.Spatial-temporal characteristics of precursory anomaly of underground fluid before M_S7.0 strong earthquakes in China's continent[J].Earthquake,24(1):126-131.(in Chinese)
晏锐,田雷,王广才,等.2018.2008年汶川8.0级地震前地下流体异常回顾与统计特征分析[J].地球物理学报,61(5):1907-1921.
Yan R,Tian L,Wang G C,et al.2008.Review and statistically characteristic analysis of underground fluid anomalies prior to the 2008 Wenchuan M_S8.0 earthquake[J].Chinese Journal of Geophysics,61(5):1907-1921.(in Chinese)
杨秋野,张艳,符力耘,等.2020.应力变化与流体(水位,水温,水化学,土壤气等)变化的耦合机理及其在川滇地区地震前兆研究中的应用[J].地球物理学进展,35(6):2124-2133.
Yang Q Y,Zhang Y,Fu L Y,et al.2006.Coupling mechanism of stress variation and groundwater(water level,water temperature,hydrochemistry,soil gas,etc.)and its application in earthquake precursors research in Sichuan and Yunnan regions[J].Progress in Geophysics,35(6):2124-2133.(in Chinese)
张建国.2017.强震前电磁辐射异常演化特征及其机理探索研究[D].合肥:中国科学技术大学.
Zhang J G.2017.Research on anomaly characteristics of electromagnetic radiation signal and mechanism before strong earthquakes[D].Heifei:University of Science and Technology of China.
张培震,邓起东,张国民,等.2003.中国大陆的强震活动与活动地块[J].中国科学:地球科学,33(增刊1):12- 20.
Zhang P Z,Deng Q D,Zhang G M,et al.2003.Strong earthquake activity and active blocks in Chinese Mainland[J].Scientia Sinica Terrae,33(S1):12-20.(in Chinese)
张肇诚.1988.中国震例(1966—1975)[M].北京:地震出版社.
Zhang Z C.1988.Earthquake cases in China(1966-1975)[M].Beijing:Seismological Press.(in Chinese)
张肇诚.1990a.中国震例(1976—1980)[M].北京:地震出版社.
Zhang Z C.1990a.Earthquake cases in China(1976-1980)[M].Beijing:Seismological Press.(in Chinese)
张肇诚.1990b.中国震例(1981—1985)[M].北京:地震出版社.
Zhang Z C.1990b.Earthquake cases in China(1981-1985)[M].Beijing:Seismological Press.(in Chinese)
张肇诚.1999.中国震例(1986—1988)[M].北京:地震出版社.
Zhang Z C.1989.Earthquake cases in China(1986-1988)[M].Beijing:Seismological Press.(in Chinese)
张肇诚.2000.中国震例(1989—1991)[M].北京:地震出版社.
Zhang Z C.2000.Earthquake cases in China(1989-1991)[M].Beijing:Seismological Press.(in Chinese)
郑兆苾,张国民,何康,等.2006.中国大陆地震震例异常统计与分析[J].地震,26(2):29-37.
Zheng Z B,Zhang G M,He K,et al.2006.Statistics and analyses of the anomalies of earthquake cases in China's Mainland[J].Earthquake,26(2):29-37.(in Chinese)
Mjachkin V I,Brace W F,Sobolev G A,et al.1975.Two models for earthquake forerunners[J].Pure & Applied Geophysics,113(1):169-181.
Wyss M.1997.Second round of evaluations of proposed earthquake precursors[J].Pure & Applied Geophysics,149(1):3-16.
Yu H Z,Liu L,Ma Y C,et al.2023.Observed hydrological changes associated with active tectonic blocks before three consecutive earthquakes in Qinghai,China[J].Scientific Reports,13:8988.

Similar References:

Memo

Last Update: 2025-03-10