The earthquakes recorded this week show that some tectonic settings are much more complex than others.
This week’s largest earthquake was an aftershock to that in Indonesia. There were also tremors in Japan and in the Pacific off Oregon.
This week there were many medium-sized earthquakes but the two largest were in the Western Pacific and off New Zealand. The United States also saw a high number of tremors.
Earthquakes may follow a broadly predictable pattern – but individual events continue to puzzle and surprise us, as this week’s tremors demonstrate.
The week’s largest earthquake occurred in a subduction zone – but tremors in Africa and Nevada show that extensional tectonics can also cause seismic activity.
There were no major earthquakes this week, but there was plenty of low-level activity worldwide, including Alaska, Iceland and Japan’s Ryuku Islands.
This week saw major earthquakes in two areas of the eastern Pacific, as well as continuing – and possibly increasing – activity in Oklahoma.
This week there were earthquakes in the Gulf of California and New Zealand, while the Oklahoma earthquake swarm extended north into Kansas.
This week there was only one large earthquake, in Guam in the western Pacific, but what caused the tremors in Sweden and Texas? Quakes as always, are interesting.
With no major earthquakes the week of 28 August-3 September was seismically quiet, but last week’s events – tremors in both Iceland and California – continue to rumble.