Eruptions

Archives for September, 2009

The big geology news right now is the M8 earthquake in American Samoa that generated a killer tsunami (which made it all the way to the Bay Area in California). Mammoth Mountain in California’s Long Valley region. In more benign, volcano-related news: The aviation alert level at Redoubt in the Alaska has been returned to…

Chaiten eruption still going strong

As fall descends on the northern hemisphere, spring starts in the southern. Luckily for us, it means that we get better views of the southern Andes in Chile … which means the NASA EO could train one of the many “eyes in the sky” (specifically the EO-1) on Chaiten. The volcano is still erupting, going…

A bit of news for your last Monday in September: Pumice deposits from the ~13,000 year old Laacher See eruption. Image by Erik Klemetti, taken in August 2007. More press for Dr. Joyce and his campaign to make the people of Australia terrified that volcanoes will destroy them. He warns of “new volcanoes” springing up…

MVP #5: Ardoukôba, Djibouti

OK, I admit it, this was a tough one. The MVP photo wasn’t entirely distinctive, but the basaltic rift volcano of Ardoukôba in this small African nation was the answer. Nice job, Anne, for narrowing down the possible locations and nailing it. MVP Standings (as of 9/25/2009) volcanista – 1 Elizabeth – 1 Ralph –…

Mystery Volcano Photo #5

So far, Eruptions readers have nailed every one of the Mystery Volcano Photos posted, usually within the first two guess. That leaves our standings as: volcanista – 1 Elizabeth – 1 Ralph – 1 Cam – 1 The field – 0 Here’s a MVP for you to identify. Good luck!

I missed the weekly report last week (sorry), but here is the new USGS/SI volcano activity report. Highlights include: Shiveluch in Kamchatka is still erupting away, producing ~7 km / 20,000 foot ash columns as the lava dome grows. There has also been pyroclastic flows spotted emanating from the new lava dome. There was a…

Some brief tidbits for your Wednesday: The view of Mt. Saint Helens from the Johnston Ridge Observatory. There is a decent article about research being done at a dissected caldera system in the Italian Alps’ Sesia Valley. The caldera in question is the Permian in age (248-298 million years old) so don’t expect to find…

The Atherton Tablelands in Far North Queensland, Australia. Nothing makes me shudder like any article titled “Blankety-blank volcano is overdue”. Typically the article that follows is full of nothing but vapid speculation and media fear-mongering. So, it wasn’t too surprising that an article titled “Volcano eruption ‘overdue’” in the Brisbane Times (amongst many other sites)…

What might be happening at Mt. Rainier?

Eruptions reader Doug pointed out in a recent comment that the seismicity at Mt. Rainier in Washington has increased over the last month or so. Take a look for yourself: Mt. Rainier seismicity over the last year (8/2008 to 9/2009). Image courtesy of PNSN Taking a closer look, over the last week there has been…

MVP #4 Answer: Sarigan

Sarigan Island in the Marianas – your MVP #4. I have to hand it to all of you, each time I’ve tried to make the Mystery Volcano Photo a challenge, you beat it with flying colors. The photo is, in fact, of Sarigan in the Mariana Islands (thanks to Dr. Ed Kohut for providing the…