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ISSN  2096-3955

CN  10-1502/P

Citation: Wu, Y., and Gao, Y. (2019). Gravity pattern in southeast margin of Tibetan Plateau and its implications to tectonics and large earthquakes. Earth Planet. Phys., 3(5), 425–434..

2019, 3(5): 425-434. doi: 10.26464/epp2019044


Gravity pattern in southeast margin of Tibetan Plateau and its implications to tectonics and large earthquakes

Key Laboratory of Earthquake Prediction, Institute of Earthquake Forecasting, China Earthquake Administration, Beijing 100036, China

Corresponding author: Yue Wu,

Received Date: 2019-03-01
Web Publishing Date: 2019-08-05

There are many active faults in the southeast margin of Tibetan Plateau, where three large active faults zones, the Longmenshan, Xianshuihe and Anninghe, merge to form a "Y" shape. Strong crustal deformation and a complicated fault distribution accompany strong earthquake activity in this zone. In this paper, we investigate a multi-scale gravity anomaly in the southeastern margin of the Tibetan Plateau using the wavelet transform; we find that the pattern of the gravity field is closely related to the fault system in the study area. Analyzing the characteristics of this Bouguer gravity anomaly at different orders indicates that the eastern Himalayan syntaxis has produced a strong eastward push during its northward movement, resulting in a shortening of the crust from west to east and a rapid uplift of the Tibetan Plateau. The Songpan–Garzê and Sichuan–Yunnan blocks have been forced to slip and extrude southward and eastward laterally. The distributions of seven large earthquakes from 1970 to 2018 reflects the relationship between large earthquakes and characteristics of the gravity anomaly. Comparing the tectonic backgrounds of several earthquakes reveals that the large earthquakes occur usually in the high gravity anomaly gradient zone, which corresponds in general to the boundary zones of the blocks. We infer that large earthquakes occur primarily in high Bouguer gravity anomaly zones in the upper crust, while low Bouguer gravity anomalies encompass the lower crust and the uppermost mantle.

Key words: southeast margin of Tibetan Plateau, Bouguer gravity anomaly (BA), wavelet transform (WT) and multiscale analysis (MA), focal mechanism of earthquake, gradient zone

Bhimasankaram, V. L. S., Nagendra, R., and Rao, S. V. S. (1977). Interpretation of gravity anomalies due to finite inclined dikes using Fourier transformation. Geophysics, 42(1), 51–59.

Burchfiel, B. C., Royden, L. H., van der Hilst, R. D., Hager, B. H., Chen, Z., King, R.W., Li, C., Lü, J., Yao, H., and Kirby, E. (2008). A geological and geophysical context for the Wenchuan earthquake of 12 May 2008, Sichuan, People’s Republic of China. GSA Today, 18(7), 4–11.

Chen, S., Xu, W. M., Shi, L., Lu, H. Y., and Guo, F. Y. (2013). Gravity field and lithospheric mechanical properties of Longmenshan fault zone and its surrounding areas. Acta Seismol. Sin. (in Chinese) , 35(5), 692–703.

Cheng, W. Z., Diao, G. L., Lü, G. P., Zhang, Y. J., Li, G. F., and Chen, T. C. (2003). Focal mechanisms, displacement rate and mode of motion of the Sichuan-Yunnan block. Seismol. Geol., 25(1), 71–87.

Clark, M. K., and Royden, L. H. (2000). Topographic ooze: building the eastern margin of Tibet by lower crustal flow. Geology, 28(8), 703–706.<703:TOBTEM>2.0.CO;2

Deng, Q. D., Cheng, S. P., Ma, J., and Du, P. (2014). Seismic activities and earthquake potential in the Tibetan Plateau. Chinese J. Geophys. (in Chinese) , 57(7), 2025–2042.

England, P., and Houseman, G. (1986). Finite strain calculations of continental deformation: 2. Comparison with the India-Asia collision zone. J. Geophys. Res., 91(B3), 3664–3676.

Fu, G. Y., Zhu, Y. Q., Gao, S. H., Liang, W. F., Jin, H. L., Yang, G. L., Guo, S. S., and Xu, Y. M. (2013). Discrepancies between free air gravity anomalies from EGM2008 and the ones from dense gravity/GPS observations at west Sichuan Basin. Chinese J. Geophys. (in Chinese) , 56(11), 3761–3769.

Fullea, J., Fernández, M., and Zeyen, H. (2008). FA2BOUG-A FORTRAN 90 code to compute Bouguer gravity anomalies from gridded free-air anomalies: application to the Atlantic-Mediterranean transition zone. Comput. Geosci., 34(12), 1665–1681.

Hou, Z. Z., and Yang, W. C. (1997). Wavelet transform and multi-scale analysis on gravity anomalies of China. Chinese J. Geophys. (in Chinese) , 40(1), 85–95.

Hou, Z. Z., and Yang, W. C. (2011). Multi-scale inversion of density structure from gravity anomalies in Tarim Basin. Sci. China Earth Sci., 54(3), 399–409.

Jiang, F. Z., and Fang, J. (2001). Gravity field separation, density inversion and crustal tectonics in Kang-Dian region. Acta Seismol. Sin. (in Chinese) , 23(4), 391–397.

Jiang, X. D., and Jin, Y. (2005). Mapping the deep lithospheric structure beneath the eastern margin of the Tibetan Plateau from gravity anomalies. J. Geophys. Res., 110(B7), 3676.

Jin, H. L., Gao, Y., Su, X. N., and Fu, G. Y. (2019). Contemporary crustal tectonic movement in the southern Sichuan-Yunnan block based on dense GPS observation data. Earth Planet. Phys., 3(1), 53–61.

Lei, J. S., Zhao, D. P., Su, J. R., Zhang, G. W., and Li, F. (2009). Fine seismic structure under the Longmenshan fault zone and the mechanism of the large Wenchuan earthquake. Chinese J. Geophys. (in Chinese) , 52(2), 339–345.

Li, Y., Xu, G. D., Zhou, R. J., Densmore, A. L., and Ellis, M. A. (2005). Isostatic gravity anomalies in the Longmen Mountains and their constraints on the crustal uplift below the mountains on the eastern margin of the Qinghai-Tibet Plateau. Geol. Bull. China (in Chinese) , 24(12), 1162–1168.

Li, Z. D., and Gao, Z. J. (2016). Characteristics and distribution of earthquake relics at Luhuo and their scientific value. Acta Geol. Sichuan (in Chinese) , 36(2), 213–216.

Long, S. S., and Zhao, Z. (2000). Characteristics of the seismic source stress field in the joint region of Xianshuihe, Longmenshan and An’ninghe faults. Acta Seismol. Sin., 13(5), 491–498.

Lou, H., and Wang, C. Y. (2005). Wavelet analysis and interpretation of gravity data in Sichuan-Yunnan region, China. Acta Seismol. Sin., 18(5), 552–561.

Lu, R. Q., Xu, X. W., He, D. F., John, S., Liu, B., Wang, F. Y., Tan, X. B., and Li, Y. Q. (2017). Seismotectonics of the 2013 Lushan Mw 6.7 earthquake: inversion tectonics in the eastern margin of the Tibetan plateau. Geophys. Res. Lett., 44(16), 8236–8243.

Ma, Z. W., Lu, Y., and Fang, J. (2017). Direct calculation method for multi-scale analysis of the gravity field with radial basis functions. Prog. Geophys. (in Chinese) , 32(4), 1474–1482.

Mallat, S. G. (1989). Multifrequency channel decompositions of images and wavelet models. IEEE Trans. Acoust., Speech, Sign. Process., 37(12), 2091–2110.

Mallat, S. H., and Hwang, W. L. (1992). Singularity detection and processing with wavelets. IEEE Trans. Inform. Theory, 38(2), 617–643.

McCann, W. R., Nishenko, S. P., Sykes, L. R., and Krause, J. (1979). Seismic gaps and plate tectonics: Seismic potential for major boundaries. Pure Appl. Geophys., 117(6), 1082–1147.

Meng, X. H., Shi, L., Guo, L. H., Tong, T., and Zhang, S. (2012). Multi-scale analyses of transverse structures based on gravity anomalies in the northeastern margin of the Tibetan Plateau. Chinese J. Geophys. (in Chinese) , 55(12), 3933–3941.

Molnar, P., and Tapponnier, P. (1975). Cenozoic tectonics of Asia: effects of a continental collision: Features of recent continental tectonics in Asia can be interpreted as results of the India-Eurasia collision. Science, 189(4201), 419–426.

Ren, F. L., Xiao, Y., Zhu, X. Y., Li, S. Q., Guo, F. X., and Wu, L. G. (2018). Research on the relationship between multi-scale satellite gravity decomposition and field source depth. J. Geod. Geodyn. (in Chinese) , 38(5), 533–538.

Royden, L. H., Burchfiel, B. C., King, R. W., Wang, E., Chen, Z. L., Shen, F., and Liu, Y. P. (1997). Surface deformation and lower crustal flow in eastern Tibet. Science, 276(5313), 788–790.

Scholz, C. H. (1998). Earthquakes and friction laws. Nature, 391(6662), 37–42.

Smith, W. H. F., and Sandwell, D. T. (1994). Bathymetric prediction from dense satellite altimetry and sparse shipboard bathymetry. J. Geophys. Res., 99(B11), 21803–21824.

Su, Y. J., and Liu, Z. Y. (1997). Discussion on the source environment and rupture process of the M7.0 Lijiang earthquake. J. Seismol. Res. (in Chinese) , 20(1), 66–71.

Tapponnier, P., Peltzer, G., Le Dain, A. Y., Armijo, R., and Cobbold, P. (1982). Propagating extrusion tectonics in Asia: new insights from simple experiments with plasticine. Geology, 10(12), 611–616.<611:PETIAN>2.0.CO;2

Teng, J. W., Xiong, S. B., and Zhang, Z. J. (1997). Review and prospects for geophysical study of the deep lithosphere structure and tectonics in Qinghai-Xizang (Tibet) plateau. Chinese J. Geophys. (in Chinese) , 40(S1), 121–139.

Thatcher, W. (2007). Microplate model for the present-day deformation of Tibet. J. Geophys. Res., 112(B1), B01401.

Wang, C. Y., Zhu, L. P., Lou, H., Huang, B. S., Yao, Z. X., and Luo, X. H. (2010). Crustal thicknesses and Poisson’s ratios in the eastern Tibetan Plateau and their tectonic implications. J. Geophys. Res., 115(B11), B11301.

Wang, E., Burchfiel, B. C., Royden, L. H., Chen, L. Z., Chen, J. S., Li W. X., and Chen, Z. (1998). Late Cenozoic Xianshuihe-Xiaojiang, Red river, and Dali fault systems of southwestern Sichuan and central Yunnan, China (pp. 1-108). Geological Society of America Special.

Wang, Q., Zhang, P. Z., Freymueller, J. T., Bilham, R., Larson, K. M., Lai, X. A., You, X. Z., Niu, Z. J., Wu, J. C.,.. Chen, Q. Z. (2001). Present-day crustal deformation in China constrained by global positioning system measurements. Science, 294(5542), 574–577.

Wang, Q. S., Teng, J. W., Zhang, Y. Q., and Yang, H. (2008). The effect of crustal gravity isostasy and Wenchuan earthquake in Longmenshan faults and adjacent area. Prog. Geophys. (in Chinese) , 23(6), 1664–1670.

Wang, Q. S., Teng, J. W., Zhang, Y. Q., Zhang, X. M., and Yang, H. (2009). The crustal structure and gravity isostasy in the middle western Sichuan area. Chinese J. Geophys. (in Chinese) , 52(2), 579–583.

Xiong, X., Wang, J. Y., and Teng, J. W. (2005). Deep mechanical background for the Cenozoic volcanism in the Tibetan Plateau. Earth Science- J. China Univ. Geosci., 16(4), 334–339.

Xu, X. W., Zhang, P. Z., Wen, X. Z., Qin Z. L., Chen G. H., and Zhu, A. L. (2005). Features of active tectonics and recurrence behaviors of strong earthquakes in the western Sichuan province and its adjacent regions. Seismol. Geol. (in Chinese) , 27(3), 446–461.

Xu, X. W., Chen, G. H., Wang, Q. X., Chen, L. C., Ren, Z. K., Xu, C., Wei, Z. Y., Lu, R. Q., Tan, X. B.,.. Shi, F. (2017). Discussion on seismogenic structure of Jiuzhaigou earthquake and its implication for current strain state in the southeastern Qinghai-Tibet Plateau. Chinese J. Geophys. (in Chinese) , 60(10), 4018–4026.

Yang, J. Y., Zhang, X. H., Zhang, F. F., Han, B., and Tian, Z. X. (2012). On the accuracy of EGM2008 earth gravitational model in Chinese Mainland. Prog. Geophys. (in Chinese) , 27(4), 1298–1306.

Yang, W. C., Guo, A. Y., Xie, Y. Q., et al. (1979). Interpretation of gravity anomalies in frequency domain (A). Comput. Tech. Geophys. Geochem. Expl. (in Chinese) (1), 1–16.

Yang, W. C. (1986). A generalized inversion technique for potential field data processing. Chinese J. Geophys. (in Chinese) , 29(3), 283–291.

Yang, W. C., Shi, Z. Q., Hou, Z. Z., and Cheng, Z. Y. (2001). Discrete wavelet transform for multiple decomposition of gravity anomalies. Chinese J. Geophys. (in Chinese) , 44(4), 534–541.

Yang, W. C. (2009). Tectonophysics in Paleo-Tethys Domain (in Chinese). Beijing: Petroleum Industry Press.

Yang, W. C., and Yu, C. Q. (2014a). Continental collision process reveled by worldwide comparison of crust and upper mantle structures (Ⅰ). Geol. Rev. (in Chinese) , 60(2), 237–259.

Yang, W. C., and Yu, C. Q. (2014b). Continental collision process reveled by worldwide comparison of crust and upper mantle structures (Ⅱ). Geol. Rev. (in Chinese) , 60(3), 486–502.

Zandt, G., and Ammon, C. J. (1995). Continental crust composition constrained by measurements of crustal Poisson’s ratio. Nature, 374(6518), 152–154.

Zhang, C. Y., Guo, C. X., Chen, J. Y., Zhang, L. M., and Wang, B. (2009). EGM 2008 and its application analysis in Chinese mainland. Acta Geodaet. Cartograph. Sin. (in Chinese) , 38(4), 283–289.

Zhang, J. S., Gao, R., Zeng, L. S., Li, Q. S., Guan, Y., He, R. Z., Wang, H. Y., and Lu, Z. W. (2009). Relationship between characteristics of gravity and magnetic anomalies and the earthquakes in Longmenshan range and adjacent areas. Chinese J. Geophys. (in Chinese) , 52(2), 572–578.

Zhang, P. Z., Deng, Q. D., Zhang, G. M., Ma, J., Gan, W. J., Min, W., Mao, F. Y., and Wang, Q. (2003). Active tectonic blocks and strong earthquakes in the continent of China. China Sci. Ser. D: Earth Sci., 46(S2), 13–24.

Zhang, Y. Q., Dong, S. W., and Yang, N. (2009). Active faulting pattern, present-day tectonic stress field and block kinematics in the east Tibetan plateau. Acta Geol. Sin., 83(4), 694–712.

Zhang, Y. Q., Wang, Q. S., and Teng, J. W. (2010). The crustal isostatic anomaly beneath eastern Tibet and western Sichuan and its relationship with the distribution of earthquakes. Chinese J. Geophys. (in Chinese) , 53(11), 2631–2638.

Zhang, Z. J., Teng, J. W., Li, Y. K., Klemperer, S., and Yang, L. Q. (2004). Crustal structure of seismic velocity in southern Tibet and east-westward escape of the crustal material. Sci. China Ser. D: Earth Sci., 47(6), 500–506.

Zhang, Z. Q., and Gao, Y. (2019). Crustal thicknesses and Poisson's ratios beneath the Chuxiong-Simao basin in the southeast margin of the Tibetan plateau. Earth Planet. Phys., 3(1), 69–84.


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Gravity pattern in southeast margin of Tibetan Plateau and its implications to tectonics and large earthquakes

Yue Wu, Yuan Gao