Coulomb stress imparted by the 2010 M=8.8 Maule, Chile, earthquake to the surrounding faults. We calculate the stress was increased at the site of today’s swarm.

Coulomb stress imparted by the 2010 M=8.8 Maule, Chile, earthquake to the surrounding faults. We calculate the stress was increased at the site of today’s swarm.

Coulomb stress imparted by the 2010 M=8.8 Maule, Chile, earthquake to the surrounding faults. We calculate the stress was increased at the site of today’s swarm.