earthquake

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Cleaning up some news … busy week leading up to a field trip I am helping co-lead to Death Valley next week. Ubehebe Crater in Death Valley, California First off, I want to say how amazed I am at the great discussion that went on all weekend about the signs of potential activity in Iceland.…

News! Toba caldera in Indonesia. We’re all still talking about the Chilean earthquake and the coverage of the event. If you happen to live in the Columbus area, you might have heard me on WTVN talking about the earthquake as well. The Toba (Indonesia) eruption 74,000 years ago has been used by some researchers to…

Screen capture of the MSNBC website on February 27, 2010 at ~5:30 PM eastern time. Most of you have probably already heard about the magnitude 8.8 earthquake that struck today off the coast of Chile. This becomes one of the most powerful earthquakes on record and so far, the death toll has been relatively low…

The Great Earthquake Swarm at Yellowstone that ushered in 2010 seems to be dying down, at least according to the USGS earthquake reports and analysis of the seismicity by the University of Utah and YVO. The daily updates on the earthquake swarms by Utah has ended. Looking at the earthquake over the last 7 days…

News! Pakistan is home to the world’s tallest mud volcano in the region of Balochistan – and its somewhat near the reports of an “eruption” earlier this week. Guess what? Since Wednesday evening, seismicity at Yellowstone has dropped precipitously. The last batch of earthquakes on February 3rd were also back to deeper levels – 8-9…

With all the talk of the current Yellowstone earthquake swarm, I thought it would worth it to write a post on the the structure and caldera – and why we get earthquake swarms that are structurally rather than magmatically-related. First off, lets think about why calderas formed. This is relatively simple – at least superficially.…

Steaming, gurgling mudpots in the active hydrothermal system of Yellowstone. For those of you following Yellowstone (I think there might be a few of you), I’ve plotted up the earthquakes since 1/27 (see below) – and sure enough, although there is a lot of scatter, they are getting shallower – however what this exactly means…

First off, I wanted to thank all of the Eruptions readers for making January the most popular month ever on this blog. I suppose I should give an assist to Yellowstone, but really, thanks for coming to the blog, reading the posts and engaging in all the great discussions that go on within its (cyber)walls.…

Some news for the last Friday in January: Volcanic lightning captured over Redoubt in March 2009. Tungurahua in Ecuador continues to erupt. Yesterday, the volcano spread ash over much of central Ecuador. Apparently people in Ecuador aren’t taking the hazard of ash too seriously, with many ignoring recommendations to wear masks when the ash is…

There has been a … ahem … healthy discussion of Yellowstone’s current earthquake swarm on Eruptions as of late. We’ve now reached ~1,500 measurable earthquakes over the last 11 days. The latest reports of the continuation of the swarm isn’t going to make anyone happy, but still, there are no signs that (a) this is…