Abstract
The three-dimension crustal and upper mantle structures in the region around Beijing were studied by seismic tomography. We used the P wave arrival times from local and teleseismic events. These events were recorded by 250 stations of the North China Seismic Array and 108 stations of the Beijing Telemetry Seismic Network. 118 869 P wave arrivals from 10 285 local events and 12 189 P wave arrivals from 107 teleseismic events were used in the inversion. We obtained the 3-D P wave velocity structure of the crust and upper mantle with the horizontal resolution of 0.3° in the studied region. The tomographic imaging shows the remarkably heterogeneous velocity variation. The velocity anomalies are in well agreement with the geological structure in the shallow crust. The different relationships between seismic activities and velocity anomalies may imply the different seismogenic structure and mechanism. Beneath the Moho under Taihangshan mountain and Yanshan mountain, we found the high velocity anomalies deep to 120 km and 200 km, respectively. The deep high velocity zone may be explained by the existence of the mountain root under Yanshan mountain. The high velocity anomalies in the upper mantle of North China basin may be the relics of the de-rooting from the former craton mantle lithosphere.
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References
Deng J, Mo X, Zhao H, Luo Z and Du Y (1994). Lithosphere root/derooting and activation of the East China continent. Geoscience8(3): 349–356 (in Chinese with English abstract).
Ding Z F (1999). Local Seismic Tomography: Theory and Applications. Ph D Dissertation, Institute of Geophysics, China Seismological Bureau, Beijing, 58–100 (in Chinese with English abstract).
Huang J L and Zhao D (2004). Crustal heterogeneity and seismotectonics of the region around Beijing, China. Tectonophysics385: 159–180.
Huang J L and Zhao D (2005). Three dimensional P wave velocity structure in Capital area and deep tectonic surroundings for the evolution of strong earthquakes. Chinese Science Bulletin50(4): 348–355 (in Chinese).
Huang J L and Zhao D (2009). Seismic imaging of the crust and upper mantle under Beijing and surrounding regions. Phys Earth Planet Inter173(3–4): 330–348.
Jia S, Qi C, Wang F, Chen Q, Zhang X and Chen Y (2005). Three dimensional crustal gridded structure of the Capital area. Chinese J Geophys48(6): 1 316–1 324 (in Chinese with English abstract).
Jin A, Liu F and Sun Y (1980). 3-D P wave velocity structure of crustal and upper mantle in Beijing area. Chinese J Geophys23(2): 172–182 (in Chinese with English abstract).
Lei J, Xie F, Lan C, Xing C and Ma S (2008). Seismic image under the Beijing region inferred from P and PmP data. Phys Earth Planet Inter162(3–4): 165–185.
Li S, Zhang X, Song Z, Shi J, Deng H, Yang J, Zhang C and Ren Q (2001). Three-dimensional crustal structure of the capital area obtained by a joint inversion of deep seismic sounding data from multiple profiles. Chinese J Geophys44(3): 360–368 (in Chinese with English abstract).
Liu F, Qu K and Wu F (1986). Seismic tomography in North China. Chinese J Geophys29(5): 442–449 (in Chinese with English abstract).
Liu F, Qu K, Wu F, Li Q, Liu J and Hu G (1989). Seismic tomography in the continent of China and the surrounding areas. Chinese J Geophys32(3): 281–291 (in Chinese with English abstract).
Paige C and Saunders M (1982). LSQR: an Algorithm for sparse linear equations and sparse least squares. Assoc Comput Meth Trans Math Software8: 43–71.
Sun R and Liu F (1995). Crustal structures and occurrence of strong earthquake in Beijing-Tianjin-Tangshan area, I. P wave velocity structure. Chinese J Geophys38(5): 599–607 (in Chinese with English abstract).
Um J and Thurber C (1987). A fast algorithm for two-point seismic ray tracing. Bull Seism Soc Amer77: 972–986.
Wang Z S, Wang C Y, Zeng R S and Wang X L (2008). Tomographic imaging of P and S wave velocity structure beneath North China and its vicinity. CT Theory and Application17(2): 15–27 (in Chinese with English abstract).
Wessel P and Smith W (1995). New version of the generic mapping tools released. EOS Trans AGU76: 329.
Yu X, Chen Y and Wang P (2003). Three dimensional P wave velocity structure in Beijing-Tianjin-Tangshan area. Acta Seismologica Sinica16(1): 1–15.
Zhang X, Zhu Z and Zhang C (1998). Study of the crust and upper mantle structure in and around the Zhangjiakou-Bohai seismic belt. In: Institute of Geology, State Seismological Bureau ed. Active Fault Research (6). Seismological Press, Beijing, 1–16 (in Chinese).
Zhao D, Hasegawa A and Horiuchi S (1992). Tomographic imaging of P and S wave velocity structure beneath northeastern Japan. J Geophys Res97: 19 909–19 928.
Zhao D, Hasegawa A and Kanamori H (1994). Deep structure of Japan subduction zone as derived from local, regional and teleseismic events. J Geophys Res99: 22 313–22 329.
Zhu L, Zeng R and Liu F (1990). Three-dimensional P wave velocity structure under the Beijing network area. Chinese J Geophys33(3): 267–277 (in Chinese with English abstract).
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Ding, Z., Zhou, X., Wu, Y. et al. Tomographic imaging of P wave velocity structure beneath the region around Beijing. Earthq Sci 22, 403–408 (2009). https://doi.org/10.1007/s11589-009-0403-9
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DOI: https://doi.org/10.1007/s11589-009-0403-9