This supplement contains information describing some earthquakes studied in the main article with respect to spatial distribution of earthquake sequences, fault geometry, and isoseismal maps.
Figure S1. Spatial distribution of the earthquake sequence (before 9 December 1975 and ML≥2) of the Haicheng earthquake (adapted from Wang et al., 1976).
Figure S2. Spatial distribution of the earthquake sequence (shaded area; before 1 December 1984 and ML≥2) of the Tangshan earthquake (adapted from Zhang et al., 1989). The two central dashed lines represent the inferred rupture planes, which show a right-stepping alignment.
Figure S3. (a) Spatial distribution of the earthquake sequence (before 9 July 2010 and ML≥2) of the Yushu earthquake. (b) The left-stepping seismologic faults (adapted from Sun et al., 2012) of Yushu earthquake.
Figure S4. (a) Spatial distribution of the earthquake sequence (ML≥3, adapted from China Earthquake Data Center [CEDC], see Data and Resources) and (b) the right-stepping seismologic faults (adapted from Tang et al., 1976) of the Luhuo earthquake. The two dashed ellipses in (a) indicate the approximate range of events that happened before 7 February 1973 (open circles) and 31 May 1973 (filled circles), respectively.
Figure S5. Spatial distribution of the earthquake sequence (before 31 January 2009 and ML≥2), isoseismal map, and the potential seismologic fault of the Panzhihua–Huili earthquake (adapted from Long et al., 2010).
Figure S6. Spatial distribution of the earthquake sequence (before 17 February 1988 and ML≥3) of the Superstition Hills earthquake. It indicates conjugated rupture planes (data obtained from NEIC).
Figure S7. Spatial distribution of the earthquake sequence (before 24 May 1992 and ML≥2) of the Joshua Tree earthquake. The focal mechanism of conjugated rupture was shown by Hauksson et al. (1993).
Figure S8. Spatial distribution of the earthquake sequence (before 1 February 1996 and ML≥4, adapted from Diao et al., 1999) of the Wuding earthquake. Diao et al. (1999) identified its focal mechanism as conjugated strike-slip rupture.
Figure S9. Spatial distribution of the earthquake sequence (before 7 February 1999 and ML≥2.5) of the Ninglang earthquake (data obtained from CEDC).
Figure S10. Spatial distribution of the earthquake sequence (before 3 April 2000 and ML≥2, adapted from Wang et al., 2002) of the Yaoan earthquake. Event 3 is the mainshock. The focal mechanism favors conjugated strike-slip rupture (Wang et al., 2002).
Figure S11. Spatial distribution of the earthquake sequence (before 10 December 2000 and ML≥2) of the Xinghai earthquake. The conjugated rupture planes were proposed by Chen et al. (2001).
Figure S12. (a) Spatial distribution of the earthquake sequence of the Ninger earthquake (before 1 December 2007 and ML≥2.5). (b) The isoseismal map and seismological faults (adapted from Xie et al., 2007) of the Ninger earthquake. The Puer fault appears as two branches in this area. Crossed seismologic ruptures have been noted by Xie et al. (2007).
China Seismic Information (CSI) and the China Earthquake Data Center (CEDC) were searched using http://www.csi.ac.cn/ and http://data.earthquake.cn/data/, respectively (both were last accessed October 2013). The U.S. Geological Survey National Earthquake Information Center (USGS NEIC) was searched using http://earthquake.usgs.gov/regional/neic/ (last accessed October 2013).
Chen, Y., and G. Cui (2001). Anomaly diagrams of seismicity and characteristics of seismic sequence before Xinghai earthquake with Ms 6.6, Earthq. Res. Plateau 13, no. 1, 14–20 (in Chinese).
Diao, G., S. Zhang, S. Wang, X. Long, and J. Wang (1999). Three-dimensional characteristics of the seismologic faults in Wuding Ms 6.5 earthquake, Yunnan, 1995, Acta Seismol. Sinica 21, no. 4, 361–366 (in Chinese).
Hauksson, E., L. M. Jones, K. Hutton, and D. Eberhart-Phillips (1993). The 1992 Landers earthquake sequence: Seismological observations, J. Geophys. Res. 98, no. B11, 19,835–19,858.
Long, F., Y. Zhang, X. Wen, S. Ni, and Z. Zhang (2010). Focal mechanism solution of ML ≥ 4.0 events in the Ms 6.1 Panzhihua–Huili earthquake sequence of Aug 30, 2008, Chin. J. Geophys. 53, no. 012, 2852–2860 (in Chinese).
Sun, X., X. Xu, L. Chen, X. Tan, G. Yu, Z. Li, G. Su, J. Wang, and X. Zhang (2012). Surface rupture features of the 2010 Yushu earthquake and its tectonic implication, Chin. J. Geophys. 55, no. 1, 155–170 (in Chinese).
Tang, R., D. Wen, T. Deng, and S. Huang (1976). A preliminary study on the characteristics of the ground fractures during the Luhuo earthquake (M = 7.9), 1973 and the origin of the earthquake, Chin. J. Geophys. 19, no. 1, 18–32 (in Chinese).
Wang, T., H. Xiang, Z. Fang, Q. Deng, F. Ji, S. Cheng, and H. Xu (1976). A study of the geotectonic background and seismogenic structures of HaiCheng earthquake, Sci. Geol. Sin. 3, 205–212 (in Chinese).
Wang, S., X. Long, and Z. Li (2002). Focal fault and stress field of Yao’an M 6.5 earthquake on January 15, 2000, Earthq. Res. China 18, no. 1, 59–66 (in Chinese).
Xie, Y., Y. Li, J. Zhang, X. Li, and N. Liu (2007). Seismogenic structure of the 2007 Ning’er, Yunnan, Ms 6.4 earthquake, J. Seismol. Res. 30, no. 4, 350–358 (in Chinese).
Zhang, Z., C. Wang, X. Fang, and H. Yan (1989). An echelon fracture model for the Tangshan earthquake sequence as well as simulation in theory and experiment, Acta Seismol. Sinica 11, no. 3, 291–302 (in Chinese).
[ Back ]
