aftershocks | Highly Allochthonous

Tag Archives: aftershocks

The long-term seismic impact of mega thrust earthquakes

Posted on July 5, 2022 by Chris Rowan

Here’s a very interesting analysis of aftershock patterns in the wake of M9+ megathrust events: the aftershocks in a ‘core’ region closest to the rupture shut off within a few years of the main shock, after which seismicity might remain … Continue reading →

Categories: earthquakes, geohazards, geology

Friday Focal Mechanisms: before and after the M8 Santa Cruz Islands quake

Posted on February 8, 2013 by Chris Rowan

On Tuesday night American time (Wednesday lunchtime local time), a magnitude 8 earthquake occurred near the Santa Cruz Islands, a set of small islands east of the Solomon Islands. In this region, the Australian plate is subducting to the north-east … Continue reading →

Categories: earthquakes, focal mechanisms, tectonics

Friday Focal Mechanism: M 7.4, Oaxaca, Mexico

Posted on March 23, 2012 by Chris Rowan

The largest earthquake to hit the planet this week was in Mexico, which was shaken on Tuesday by a magnitude 7.4 earthquake. The epicentre was in the Oaxaca region about 300 kilometres southwest of Mexico city, and the rupture was … Continue reading →

Categories: earthquakes, focal mechanisms, geohazards

Friday focal mechanisms: aftershocks in eastern Turkey

Posted on November 11, 2011 by Chris Rowan

Almost a fortnight after a magnitude 7.1 earthquake shook Eastern Turkey, the region continues to suffer from aftershocks, and there were two pretty big ones earlier this week: a magnitude 5.2 on Tuesday, and then a magnitude 5.6 on Wednesday. … Continue reading →

Categories: earthquakes, focal mechanisms, geohazards