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ISSN  2096-3955

CN  10-1502/P

Citation: YuLan Li, BaoShan Wang, RiZheng He, HongWei Zheng, JiangYong Yan, Yao Li, 2018: Fine relocation, mechanism, and tectonic indications of middle-small earthquakes in the Central Tibetan Plateau, Earth and Planetary Physics, 2, 406-419. doi: 10.26464/epp2018038

2018, 2(5): 406-419. doi: 10.26464/epp2018038


Fine relocation, mechanism, and tectonic indications of middle-small earthquakes in the Central Tibetan Plateau


Key Laboratory of Earthquake Observation and Geophysical Imaging, Institute of Geophysics, China Earthquake Administration, Beijing 100081, China


Key Laboratory of Geodynamics of the Department of Natural Resources, Chinese Academy of Geological Sciences, Beijing 100037, China


Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China

Corresponding author: HongWei Zheng,

Received Date: 2018-06-21
Web Publishing Date: 2018-09-01

The medium-small earthquakes that occurred in the middle part of Tibetan Plateau (32°N–36°N, 90°E–93°E) from August 2016 to June 2017 were relocated using the absolute earthquake location method Hypo2000. Compared to the reports of Chinese Seismological Networks, our relocation results are more clustered on the whole, the horizontal location differences exceed 10 km, and the focal depths are concentrated in 0–8 km, which indicates that the upper crust inside the Tibetan Plateau is tectonically active. In June 2017 altogether eight earthquakes above magnitude 3.0 took place; their relocated epicenters are concentrated around Gêladaindong. The relocation results of M<3.0 small earthquakes also showed obvious differences. Therefore, we used the CAP method to invert for the focal mechanisms of theM ≥3.0 earthquakes; results generally tally with the surface geological structures, indicating that the Tibetan Plateau is still under the strong compressional force from the India Plate. Among them the eight earthquakes that occurred near Gêladaindong in June 2017 are all of normal fault type or with some strike-slip at the same time; based on previous research results we conjecture that these events are intense shallow crust responses to deep crust-mantle activities.

Key words: relocation, focal mechanism solution, compression, Gêladaindong, ground surface response

Bai, L., Li, G. H., Khan, N. G., Zhao J. M., Ding, L. (2017). Focal depths and mechanisms of shallow earthquakes in the Himalayan-Tibetan region. Gondwana Res., 41, 390–399.

Chang, C. F., Chen, N. S., Coward, M. P., Deng, W. M., Dewey, J. F., Gansser, A., Harris, N. B. W., Jin, C. W., Kidd, W. S. F., … Zhang, Y. Q. (1986). Preliminary conclusions of the Royal Society and Academia Sinica 1985 geotraverse of Tibet. Nature, 323(6088), 501–507.

Chung, S. L., Chu, M. F., Zhang, Y. Q., Xie, Y. W., Lo, C. H., Lee, T. Y., Lan, C. Y., Li, X. H., Zhang, Q., Wang, Y. Z. (2005). Tibetan tectonic evolution inferred from spatial and temporal variations in post-collisional magmatism. Earth Sci. Rev., 68(3-4), 173–196.

Data Management Centre of China National Seismic Network. (2007). Waveform data of China National Seismic Network Institute of Geophysics, China Earthquake Administration (in Chinese).222

Deng, Q. D. (1996). Active tectonics in China. Geol. Rev., 42(4), 295–299.

Deng, W. M., Zheng, X. L., Matsumoto, Y. (1996). Petrological characteristics and ages of cenozoic volcanic rocks from the Hoh Xil Mts. Qinghai Province. Acta Petrol. Miner., 15(4), 289–298

Deng, W. M., Sun, H. J., Zhang, Y. Q. (1999). K-Ar age of the Cenozoic volcanic rocks in the Nangqen Basin, Qinghai Province and its geological significance. Chin. Sci. Bull., 45(1), 1015–1019.

Deng, W. M., Sun, H. J., Zhang, Y. Q. (2001). Petrogenesis of Cenozoic potassic volcanic rocks in Nangqen Basin. Chin. J. Geol., 36(3), 304–318.

Gao, R., Chen, C., Lu, Z. W., Brown, L. D., Xiong, X. S., Li, W. H., Deng, G. (2013). New constraints on crustal structure and Moho topography in Central Tibet revealed by SinoProbe deep seismic reflection profiling. Tectonophysics, 606, 160–170.

Guan, Y., Wu, P., Fan, J., Fu, Y., Tang, L., Ma, F. H., (2017). Station distribution influence on locating results calculated by different methods—a case study of Lushan after-shocks. Earthquake Research in Sichuan, 1, 29–33

Guo, Z. F., Wilson, M., Liu, J. Q., Mao, Q. (2006). Post-collisional, potassic and ultrapotassic magmatism of the Northern Tibetan Plateau: Constraints on Characteristics of the Mantle Source, geodynamic setting and uplift mechanisms. J. Petrol., 47(6), 1177–1220.

Hacker, B. R., Gnos, E., Ratschbacher, L., Grove, M., Mcwilliams, M., Sobolev, S. V., et al. (2000). Hot and dry deep crustal xenoliths from Tibet. Science, 287(5462), 2463–2466.

Han, L. B., Jiang, C. S. (2012). Focal mechanism inversion of 8 Jun 2011 Toksun Ms 5.3 earthquake. Acta Seismol. Sin., 34(3), 415–422.

He, R. Z., Liu, G. C., Golos, E., Gao, R., Zheng, H. W. (2014a). Isostatic gravity anomaly, lithospheric scale density structure of the northern Tibetan plateau and geodynamic causes for potassic lava eruption in Neogene. Tectonophysics, 628, 218–227.

He, R. Z., Shang, X. F., Yu, C. Q., Zhang, H. J., Van der Hilst, R. D. (2014b). A unified map of Moho depth and Vp/Vs ratio of continental China by receiver function analysis. Geophys. J. Int., 199(3), 1910–1918.

He, R., Zhao, D., Gao, R., Zheng, H. (2010). Tracing the Indian lithospheric mantle beneath central Tibetan plateau using teleseismic tomography. Tectonophysics, 491(1), 230–243

Jiang, M., Xu, Z. Q., Qian, R. Y., Wang, Y. J., Zhang, L. S. (2006). Analysis of deep tectonic activity in the eastern segment of the northern margin of the Qinghai-Tibetan Plateau based on the Delingha earthquake. Geol. China, 33(2), 268–374.

Jiang, M., Peng, M., Wang, Y. X., Tan, H. D., Li, Q. Q., Zhang, L. S., Wang, W. (2012). Geophysical evidence for deep subduction of Indian lithospheric plate beneath Eastern Himalayan Syntaxis. Acta Petrol. Sin., 28(6), 1755–1764

Kissling, E., Kradolfer, U., Maurer, H. (1995). VELEST User's Guide-Short Introduction. Zürich: Institute of Geophysics and Swiss Seismological Service, ETH Zürich.222

Klein, F. W. (2002). User's Guide to HYPOINVERSE-2000, A Fortran Program to Solve for Earthquake Locations and Magnitudes. Open File Report 02-171, United States Department of the Interior Geological Survey.222

Li, C., Zhai, Q. G., Dong, Y. S., Huang, X. P. (2006a). Discovery of eclogite and its geological significance in Qiangtang area, central Tibet. Chin. Sci. Bull., 51(9), 1095–1100.

Li, C., Zhai, Q. G., Chen, W., Yu, J. J., Huang, X. P., Zhang, Y. (2006b). Ar-Ar chronometry of the eclogite from central Qiangtang area, Qinghai-Tibet Plateau. Acta Petrol. Sin., 22(12), 2843–2849.

Li, Y. H., Tian, X. B., Wu, Q. J., Zeng, R. S., Zhang, R. Q. (2006). The Poisson ratio and crustal structure of the central Qinghai-Xizang inferred from INDEPTH-III teleseismic waveforms: Geological and geophysical implications. Chinese J. Geophys., 49(4), 1037–1044.

Liang, X. F., Tian, X. B., Zhu, G. H., Wu, C. L., Duan, Y. H., Li, W., Zhou, B. B., Zhang, M. H., Yu, G. P., … Teng, J. W. (2016). SANDWICH: a 2D broadband seismic array in Central Tibet. Seismol. Res. Lett., 87(4), 864–873.

Lin, A. M., Fu, B. H., Guo, J. M., Zeng, Q. L., Dang, G. M., He, W. G., Zhao, Y. (2002). Co-seismic strike-slip and rupture length produced by the 2001 Ms 8.1 Central Kunlun earthquake. Science, 296(5575), 2015–2017.

Ma, Z. J. (1992). Research on the Seismogenic Layers of the China Mainland (in Chinese). Beijing: Seismological Press.222

Ma, Z. J., Chen, X. L., Ye, S. H., Lai, X. A., Wei, Z. Q., Chen, J. R., Ning, J. S., Xu, H. Z., Ding, G. Y. (2001). Contemporary crustal movement of continental China obtained by global positioning system (GPS) measurements. Chin. Sci. Bull., 46(18), 1552–1554.

Mechie, J., Kind, R. (2013). A model of the crust and mantle structure down to 700 km depth beneath the Lhasa to Golmud transect across the Tibetan plateau as derived from seismological data. Tectonophysics, 606, 187–197.

Owens, T. J., Randall, G. E., Wu, F. T., Zeng, R. S. (1993). PASSCAL instrument performance during the Tibetan Plateau passive seismic experiment. Bull. Seismol. Soc. Am., 83(6), 1959–1970

Peng, M., Tan, H. D., Jiang, M., Wang, W., Li, Q. Q., Zhang, L. S. (2012). Joint inversion of receiver functions and magnetotelluric data: Application to crustal and mantle structure beneath central Namche Barwa, eastern Himalayan syntaxis. Chinese J. Geophys., 55(7), 2281–2291.

Teng, J. W., Wang, S. Z., Yao, Z. X., Xu, Z. W., Zhu, Z. W., Yang, B. P., Zhou, W. H. (1980). Characteristics of the geophysical fields and plate tectonics of the Qinghai-Xizang Plateau and its neighbouring regions. Acta Geophys. Sin., 23(3), 254–268

Teng, J. W., Sun, K. Z., Wei, S. Y., Xue, C. S. (1989). Characteristics of seismicity in the Qinghai-Xizang Plateau and its marginal zone. In Summary of the abstracts of the Geophysical Institute of the Chinese Academy of Sciences (in Chinese). Beijing: Chinese Society for Rock Mechanics & Engineering.222

Tilmann, F., Ni, J., INDEPTH III Seismic Team. (2003). Seismic imaging of the downwelling Indian lithosphere beneath Central Tibet. Science, 300(5624), 1424–1427.

Turner, S., Hawkesworth, C., Liu, J. Q., Rogers, N., Kelley, S., van Calsteren, P. (1993). Timing of Tibetan uplift constrained by analysis of volcanic rocks. Nature, 364(6432), 50–54.

Wang, C. S. (2001). Geological Evolution and Oil and Gas Prospect Evaluation in the Qiangtang Basin, Tibet (in Chinese). Beijing: Geological Publishing House.222

Wang, C. S., Dai, J. E., Zhao, X. X., Li, Y. L., Graham, S. A., He, D. F., Ran, B., Meng, J. (2014). Outward-growth of the Tibetan Plateau during the Cenozoic: A review. Tectonophysics, 621, 1–43.

Wang, S. Y., Gao, A. J., Xue, Z. H., Zhang, X. D., Guo, Y. (2000). Relocation of earthquakes in northeastern region of Qinghai-Xizang plateau and characteristics of earthquake activity. Acta Seismol. Sin., 13(3), 257–264.

Wen, S. L., Tao, X. L., Cao, H. W., Danzeng, Z. M., De, J. (2010). Seismic characteristic analysis of Nima Ms5.6 earthquake in Tibet. J. Inst. Dis.-Prevent. Sci. Technol., 12(1), 36–39.

Williams, H. M., Turner, S. P., Pearce, J. A., Kelley, S. P., Harris, N. B. W. (2004). Nature of the source regions for post-collisional, potassic magmatism in southern and northern Tibet from geochemical variations and inverse trace element modelling. J. Petrol., 45(3), 555–607.

Yang, Z. X., Chen, Y. T., Zheng, Y. J., Tu, X. W. (2003). Accurate relocation of earthquakes in central-western China using the double-difference earthquake location algorithm. Sci. China Ser. D, 46(S2), 181–188.

Yao, H. Z., Duan, Q. F., Niu, Z. J. (2001). Progress work of the "Cibuzhang Interchange 1: 250000 Regional Geological Survey" in the Source Region of the Yangtze River. Geol. Miner. Resour. South China(3), 70–71

Yin, A., Harrison, T. M. (2000). Geologic evolution of the Himalayan-Tibetan orogen. Annu. Rev. Earth Planet. Sci., 28, 211–280.

Zheng, H. W., Li, T. D., Gao, R., Zhao, D. P., He, R. Z. (2007). Teleseismic P-wave tomography evidence for the Indian lithospheric mantle subducting northward beneath the Qiangtang terrane. Chinese J. Geophys., 50(5), 1418–1426

Zheng, J. D., Zheng, B. H. (1982). Study of the characteristics of seismology and geology in the Xizang region from satellite imagery. Seismol. Geol., 4(4), 35–44

Zheng, J. D. (1986). Seismicity in the Tibetan plateau. Chin. Sci. Bull.(23), 1815–1818

Zheng, X. F., Ouyang, B., Zhang, D. N., Yao, Z. X., Liang, J. H., Zheng, J. (2009). Technical system construction of Data Backup Centre for China Seismograph Network and the data support to researches on the Wenchuan earthquake. Chinese J. Geophys., 52(5), 1412–1417.

Zou, C. Q., He, R. Z., Zhang, Z. (2012). Seismicity characteristics beneath the northern Tibetan Plateau and its tectonic significances. Prog. Geophys., 27(2), 429–440.

Zhu, G. H., Liang, X. F., Tian, X. B., Yang, H. F., Wu, C. L., Duan, Y. H., Li, W., Zhou, B. B. (2017). Analysis of the seismicity in central Tibet based on the SANDWICH network and its tectonic implications. Tectonophysics, 702, 1–7.

Zhu, L. P., Helmberger, D. V. (1996). Advancement in source estimation techniques using broadband regional seismograms. Bull. Seismol. Soc. Am., 86(5), 1634–1641

Zhu, L. P., Helmberger, D. V., Saikia, C. K., Woods, B. B. (1997). Regional waveform calibration in the Pamir‐Hindu Kush region. J. Geophys. Res., 102(B10), 22799–22813.


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Fine relocation, mechanism, and tectonic indications of middle-small earthquakes in the Central Tibetan Plateau

YuLan Li, BaoShan Wang, RiZheng He, HongWei Zheng, JiangYong Yan, Yao Li