Thread: Technical Session in LASC: SSA: The Recent Earthquakes that Shocked Mexico in September 2017

Started: 2018-01-17 15:41:22
Last activity: 2018-01-17 15:41:22
Topics: SSA Meetings
The Recent Earthquakes that Shocked Mexico in September 2017

Last September, Mexico experienced two large earthquakes that seriously affected the south and central parts of the country. Both earthquakes were intraslab normal-faulting ruptures within the oceanic Cocos plate. The first one (Mw=8.1) occurred on September 8 in the Tehuantepec Gulf, collapsing thousands of small to medium size buildings in several provinces around the epicentral area. Numerous aftershock sequences (or triggered seismicity) followed the main earthquake increasing the damage to the Tehuantepec Isthmus. The second event (Mw=7.1) occurred eleven days later, on September 19, south of the border between the Morelos and Puebla States and close to important cities such as Cuernavaca and Mexico City (~100 km to the north of the epicenter), where hundreds of buildings collapsed or were seriously damaged. In total, the authorities estimate that about 400 people died nationwide as a consequence of both events. This session welcomes papers addressing various seismological aspects of both earthquakes, such asnouncements

Announcements by other (non-IRIS) organizations, which may be of general interest to the seismological community
source modelling, aftershocks sequences, ground motion and tsunami modeling, strong motions, triggered seismicity and tectonic implications among others.

Session Conveners
Arturo Iglesias, Institute of Geophysics, UNAM, <arturo<at>>
Vala Hjörleifsdóttir, Institute of Geophysics, UNAM, <vala<at>>
Víctor M. Cruz-Atienza, Institute of Geophysics, UNAM, <cruz<at>>
Roberto Ortega-Ruiz, CICESE-Unidad La Paz, <ortegarobe<at>>
Page built 14:36:35 | v.f0f5b0a4