
Imapcted by the M7.5 Montalban earthquake (epicenter near San Felipe), approximately 498,000 people are estimated to be exposed to MMI-VII shaking, while about 368,000 and 235,000 people are estimatedto be exposed to MMI-VIIl and MMI-IX shaking, respectively. Overall, more than 1.0 milion people aredistributed in areas with seismic intensity of MMI-VII or higher. These intensity levels may cause significant damage to ordinary buildings, with MMI-VIIl and above being destructive. (DRS4BR, Mao WF, Wang ZQ, Wu LX et al.)