Tag Archives: aftershocks

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

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

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

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

More large aftershocks rattle Christchurch: will it ever end?

Analysis of the ongoing earthquake sequence. Continue reading

Categories: earthquakes, focal mechanisms, geohazards, tectonics

Earthquake location matters, part eleventy

It’s been a month since the Tohuku earthquake and tsunami rattled then swamped northern Honshu, and Japan continues to be rattled by sizeable aftershocks. A magnitude 7.1 shock last Thursday initially set off further tsunami alerts but the rupture turned … Continue reading

Categories: earthquakes, focal mechanisms, geohazards, society