- © 2013 by the Seismological Society of America
Online Material: Maximum horizontal displacements; GPS station information.
The 2008 Ms 8.0 Wenchuan earthquake was the most disastrous event in China since the 1976 Tangshan M 7.8 earthquake. More than 80,000 people were killed, over 370,000 people were injured, and the total economic loss reached more than US $100 billion, as reported by the China Earthquake Networks Center (CENC; 2008). The earthquake initiated at 14:28:04 Beijing Time (06:28:04 UTC), with epicenter location at 31.00° N, 103.37° E, and depth of 14.5 km. The rupture was discontinuous with a total length of 340 km (Zhang et al., 2010) and with maximum right lateral and vertical displacements of 5 and 4.8 m, respectively (Xu et al., 2008). High‐rate sampling by continuous Global Positioning Systems (GPS) stations located on the Chinese mainland (Fig. 1) recorded the strong ground motion wave forms including the dynamic and static components. It was the first time that a strong earthquake (M≥8) was recorded by high‐rate GPS on the Chinese mainland.
Over the past decade, with the improvement of receiver and data‐processing technologies, high‐rate GPS observations have gained an increasing importance in the field of earthquake geodesy. A number of large …