Electronic Supplement to
Aftershock Observation and Analysis of the 2013 Ms 7.0 Lushan Earthquake

by Lihua Fang, Jianping Wu, Weilai Wang, Wenkang Du, Jinrong Su, Changzai Wang, Ting Yang, and Yan Cai

We present a complete aftershock sequence catalog of the Lushan earthquake from 20 April 2013 to 20 April 2014. Our new relocation results provide a sensible improvement on the existing ones in terms of earthquake location accuracy and geometrical definition of the seismogenic fault system. The catalog is of great importance for comparison with the automatic processing procedure, detection of missing early aftershocks, statistical seismology, and hazard assessment. Our electronic supplement includes three figures and three tables.

Figures

Figure S1. Starting and ending times of temporary stations deployed in and around the Lushan earthquake region. The station names are labeled on the left of the panel.

Figure S2. (a) Map view and (b) cross-section A–A′ view of the aftershocks for the first eight days after the mainshock. The color scale refers to the logarithmic time after the mainshock. The yellow star shows the location of the mainshock. Magnitudes are indicated by the relative sizes of the circles. F1, Yanjing–Wulong fault; F2, Dachuan–Shuangshi fault; F3, Xinkaidian fault; and F4, Dayi fault.

Figure S3. Spatial and temporal evolution of the y-shape fault for the first 180 hours along C–C′ cross section (see Fig. 5 in main article). The time interval is marked on the bottom left of each panel. The aftershocks located within 10 km from the vertical plane are projected on the cross section. The blue lines are fault planes fitted with the linear regression method.

Tables

Table S1. Information on the temporary stations deployed in and around the Lushan earthquake region. Stations 16–50 are still working. All times are in Beijing local time (UTC + 08:00).

Table S2. Catalog of aftershock sequences of the Lushan earthquake, determined using a 3D velocity model. The time interval is from 20 April 2013 to 20 April 2014. Event parameters: lat, latitude (°); lon, longitude (°); dep, depth (km). EX, EY, and EZ are the average location error of the hypocenters (km). MAG, ML magnitude; NPH, phase number; Res, travel-time residual (s).

Table S3. Catalog of aftershocks relocated using hypoDD. Column heads are as shown for Table S2.

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