On 26 December 2006, two closely linked earthquakes, both M_L 7.0, occurred only 8 minutes apart at 12:26:21 and 12:34:15 UT, respectively, in southwestern offshore of Taiwan near Pingtung. These two earthquakes were referred to as the Pingtung Earthquake Doublet that is unique not only because of being an earthquake doublet, but also both events were the largest in southwestern Taiwan during the past one hundred years. The occurrence of this doublet was in a region, where the seismic activity has been relatively low......