Campaign-style GPS equipment deployed to GPS control points in the vicinity of the epicentral region. Data will be compared to predicted offsets to validate the focal mechanisms obtained by seismic sources. GPS antenna (on the right) is mounted on a 0.5 meter spike mount and receiver (inside black box on the left) is powered by a 12 volt battery with solar panel support. Re-occupation of each site lasts between 3 days to one week. Credit: Alberto López