Volume 43 Issue 4
Jul.  2021
Turn off MathJax
Article Contents
Xu W M,Shi L,Chen S,Lu H Y. 2021. Gravity field characteristics and seismogenic model in North China. Acta Seismologica Sinica,43(4):441−452 doi: 10.11939/jass.20200150
Citation: Xu W M,Shi L,Chen S,Lu H Y. 2021. Gravity field characteristics and seismogenic model in North China. Acta Seismologica Sinica43(4):441−452 doi: 10.11939/jass.20200150

Gravity field characteristics and seismogenic model in North China

doi: 10.11939/jass.20200150
  • Received Date: 2020-09-01
  • Rev Recd Date: 2021-01-15
  • Available Online: 2021-09-09
  • Publish Date: 2021-07-15
  • In this paper, we use a Bayesian principle-based gravity leveling method to uniformly process 16 periods of land-based mobile gravity observations from 2009-2017 in North China, and study the dynamic characteristics of the regional gravity field in conjunction with four earthquakes (M≥4.5) that have struck the studied area since 2009. Further, we study the characteristics of the isostatic gravity anomaly in North China, and analyze the relationship between regional gravity field changes and deep density structure based on the Bouguer gravity anomaly, sedimentary sequences gravity anomaly and Moho gravity anomaly in the studied area to characterize the three-dimensional density structure in North China. The results show that, the four earthquakes (M≥4.5) in the studied area in recent years have been located near the contours of the regional differential gravity field and the zero-value of the cumulative gravity field, the abnormally shifting gradient zones and the bends of the gradient zones, the unbalanced zones in the deep structure where the theoretical equilibrium thickness differs from theactual crustal thickness, and the high and low densities of the three-dimensional density structure inside the transition zone.

     

  • loading
  • [1]
    Duan Y H,Wang F Y,Zhang X K,Lin J Y,Liu Z,Liu B F,Yang Z X,Guo W B,Wei Y H. 2016. Three-dimensional crustal velocity structure model of the middle-eastern North China Craton(HBCrust1.0)[J]. Science China Earth Sciences,59(7):1477–1488. doi: 10.1007/s11430-016-5301-0
    [2]
    Gu G X,Guo Z F,Liu K R,Zheng J H,Lu H Y,Liu D F. 1997. Temporally continuous gravity changes and the conception and occurrence of earthquakes in the Beijing-Tianjin-Tangzhang region,China[J]. Chinese Science Bulletin,43(1):8–21 (in Chinese).
    [3]
    Jia S X,Qi C,Wang F Y,Chen Q F,Zhang X K,Chen Y. 2005. Three-dimensional crustal gridded structure of the Capital area[J]. Chinese Journal of Geophysics,48(6):1316–1324 (in Chinese). doi: 10.1002/cjg2.779
    [4]
    Li S L,Zhang X K,Song Z L,Shi J H,Deng H Z,Yang J,Zhang C K,Ren Q F. 2001. Three-dimensional crustal structure of the capital area obtained by a joint inversion of DSS data from multiple profiles[J]. Chinese Journal of Geophysics,44(3):360–368 (in Chinese).
    [5]
    Ma X Y,Liu C Q,Liu G D. 1991. Xiangshui (Jiangsu Province) to Mandal (Nei Monggol) geoscience transect[J]. Acta Geologica Sinica,(3):199–215 (in Chinese).
    [6]
    Shen C Y,Li H,Sun S A,Liu S M,Xuan S B,Tan H B. 2009. Dynamic variations of gravity and the preparation process of the Wenchuan MS8.0 earthquake[J]. Chinese Journal of Geophysics,52(10):2547–2557 (in Chinese).
    [7]
    Teng J W,Wang F Y,Zhao W Z,Zhang Y Q,Zhang X K,Yan Y F,Zhao J R,Li M,Yang H,Zhang H S,Ruan X M. 2010. Velocity structure of layered block and deep dynamic process in the lithosphere beneath the Yinshan orogenic belt and Ordos basin[J]. Chinese Journal of Geophysics,53(1):67–85 (in Chinese).
    [8]
    Teng J W,Li S L,Zhang Y Q,Zhao J R,Pi J L,Wang F Y,Yan Y F,Yang H,Hu G Z,Pan S Z. 2014. Seismic wave fields and dynamical response for Qinling orogen and sedimentary basins and crystalline basement[J]. Chinese Journal of Geophysics,57(3):770–788 (in Chinese).
    [9]
    Zhang G M,Ma H S,Wang H,Wang X L. 2005. Boundaries between active-tectonic blocks and strong earthquakes in the China mainland[J]. Chinese Journal of Geophysics,48(3):602–610 (in Chinese). doi: 10.1002/cjg2.693
    [10]
    Zhang X K,Li S L,Wang F Y,Jia S X,Fang S M. 2003. Differences of crustal structures in northeastern edge of Tibet Plateau,Ordos and Tangshan earthquake region in North China:Results of deep seismic sounding[J]. Seismology and Geology,25(1):52–60 (in Chinese).
    [11]
    Zheng T Y, Duan Y H, Xu W W, Ai Y S, Chen L, Zhao L, Zhang Y Y, Xu X B. 2015. Crust and upper mantle velocity model of North China v2.0[EB/OL]. [2020-08-18]. http://www.craton.cn/data (in Chinese).
    [12]
    Zhu Y Q,Xu Y M,Lü Y P,Li T M. 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).
    [13]
    Zhu Y Q,Liang W F,Zhan F B,Liu F,Xu Y M,Guo S S,Liu L. 2012. Study on dynamic change of gravity field in China continent[J]. Chinese Journal of Geophysics,55(3):804–813 (in Chinese).
    [14]
    Zhu Y Q,Zhang Y,Zhang G Q,Liu F,Zhao Y F. 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). doi: 10.1360/TB-2019-0153
    [15]
    Airy G B. 1855. On the computation of the effect of the attraction of mountain masses as disturbing the apparent astronomical latitude of stations in geodetic surveys[J]. Monthly Not Roy Astronom Soc,16(2):42–43. doi: 10.1093/mnras/16.2.42
    [16]
    Chen S,Liu M,Xing L L,Xu W M,Wang W X,Zhu Y Q,Li H. 2016. Gravity increase before the 2015 MW7.8 Nepal earthquake[J]. Geophys Res Lett,43(1):111–117. doi: 10.1002/2015GL066595
    [17]
    Chen S,Zhuang J C,Li X Y,Lu H Y,Xu W M. 2019. Bayesian approach for network adjustment for gravity survey campaign:Methodology and model test[J]. J Geod,93(5):681–700. doi: 10.1007/s00190-018-1190-7
    [18]
    Crossley D,Hinderer J,Riccardi U. 2013. The measurement of surface gravity[J]. Rep Progr Phys,76(4):046101. doi: 10.1088/0034-4885/76/4/046101
    [19]
    Jarvis A, Reuter H I, Nelson A, Guevara E. 2008. Hole-filled seamless SRTM data V4, International Centre for Tropical Agri-culture(CIAT)[EB/OL]. [2018-01-03]. http://srtm.csi.cgiar.org/SELECTION/inputCoord.asp.
    [20]
    Kuo J T,Sun Y F. 1993. Modeling gravity variations caused by dilatancies[J]. Tectonophysics,227(1-4):127–143. doi: 10.1016/0040-1951(93)90091-W
    [21]
    Li S L,Mooney W D. 1998. Crustal structure of China from deep seismic sounding profiles[J]. Tectonophysics,288(1/4):105–113.
    [22]
    Li S L,Mooney W D,Fan J C. 2006. Crustal structure of mainland China from deep seismic sounding data[J]. Tectonophysics,420(1/2):239–252.
    [23]
    Li Y G,Oldenburg D W. 1998. 3-D inversion of gravity data[J]. Geophysics,63(1):109–119. doi: 10.1190/1.1444302
    [24]
    Maceira M,Ammon C J. 2009. Joint inversion of surface wave velocity and gravity observations and its application to central Asian basins shear velocity structure[J]. J Geophys Res,114(B2):B02314.
    [25]
    Montagner J P,Juhel K,Barsuglia M,Ampuero J P,Chassande-Mottin E,Harms J,Whiting B,Bernard P,Clévédé E,Lognonné P. 2016. Prompt gravity signal induced by the 2011 Tohoku-Oki earthquake[J]. Nat Commun,7:13349. doi: 10.1038/ncomms13349
    [26]
    Mouyen M,Simoes M,Mouthereau F,Masson F,Hwang C,Cheng C C. 2014. Investigating possible gravity change rates expected from long-term deep crustal processes in Taiwan[J]. Geophys J Int,198(1):187–197. doi: 10.1093/gji/ggu133
    [27]
    Shi L,Li Y H,Zhang E H. 2015. A new approach for density contrast interface inversion based on the parabolic density function in the frequency domain[J]. J Appl Geophys,116:1–9. doi: 10.1016/j.jappgeo.2015.02.022
    [28]
    Stephen R,Sparks J,Cashman K V. 2017. Dynamic magma systems:Implications for forecasting volcanic activity[J]. Elements,13(1):35–40. doi: 10.2113/gselements.13.1.35
    [29]
    Van Camp M,De Viron O,Watlet A,Meurers B,Francis O,Caudron C. 2017. Geophysics from terrestrial time-variable gravity measurements[J]. Rev Geophys,55(4):938–992. doi: 10.1002/2017RG000566
    [30]
    Wang C Y,Zeng R S,Mooney W D,Hacker B R. 2000. A crustal model of the ultrahigh-pressure Dabie shan orogenic belt,China,derived from deep seismic refraction profiling[J]. J Geophys Res,105(B5):10857–10869. doi: 10.1029/1999JB900415
    [31]
    Zhang Y,Chen S,Xing L L,Liu M,He Z T. 2020. Gravity changes before and after the 2008 MW7.9 Wenchuan earthquake at Pixian absolute gravity station in more than a decade[J]. Pure Appl Geophys,177(1):121–133. doi: 10.1007/s00024-019-02356-4
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Figures(6)

    Article Metrics

    Article views (173) PDF downloads(59) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return