Category Archives: earthquakes

Friday focal mechanisms: Chile’s persistent seismic gap

The magnitude 8.8 earthquake that shook Chile in February 2010 occurred within a seismic gap – but new research suggests that it did not fill it. Continue reading

Categories: earthquakes, focal mechanisms, geohazards

Friday Focal Mechanism: Magnitude 7.2, Western Pakistan

Why are we getting an extensional earthquake at a convergent plate boundary? Continue reading

Categories: earthquakes, focal mechanisms, geophysics, tectonics

After the (blog)storm: following up on the big geological stories of 2010

In the past year, there have been several occasions where we’ve discussed events that were, at the time of posting, capturing a lot of media attention. But, as we all know, the attention span of the rolling news cycle is … Continue reading

Categories: earthquakes, geohazards, public science

All quiet on the Alpine Fault?

The Alpine fault has not ruptured since European settlement in the 1840s. Paleoseismology tells us that this is the longest it has gone in a millenium without generating a magnitude 8+ earthquake. Continue reading

Categories: earthquakes, geohazards, geology, geomorphology, tectonics

Tectonics of the M7 earthquake near Christchurch, New Zealand

This post was written in response to the Darfield earthquake in September 2010. The most recent seismic activity is discussed here. [Updated 8th September 1200 GMT – see bottom of post. And check out the PodClast discussion of this earthquake, … Continue reading

Categories: earthquakes, focal mechanisms, geohazards, tectonics