Caldera

Eruptions

Category archives for Caldera

Two quick notes: A Costa Rican farmer evacuating in early January 2010 after renewed activity of Volcan Turrialba. Well, it appears that after a quiet night on Friday, the current Yellowstone swarm picked up where it left off. We’re now up to 1,200 earthquakes since January 17th, with a pair over M3 today. Of course,…

Quick news updates for a Wednesday… The island (and volcano) of Gran Canaria in the Atlantic Ocean. It last erupted in ~20 B.C. The earthquakes keep coming at Yellowstone – up to a M3.5 in the last 24 hours. Time has already put up an article wondering about whether people need worry about the swarm…

A hot spring in Yellowstone National Park. Image courtesy of the USGS. Yesterday I left a little teaser about the current earthquake swarm going on at the Yellowstone Caldera. Eruptions readers have come through with even more information on the swarm. Over 250 earthquakes have occurred in the park over the last few days, most…

Some news for today: Yellowstone National Park, USA. Another fine example of media headline versus actual research, an article in the Jackson Hole Daily about a new study by Dr. Robert Smith and others on the Yellowstone plume was titled “Park’s giant magma plume eating up mountains”. Yikes! Well, the actual study published recently in…

Geologic and structural map showing the extent of the Campi Flegrei caldera on the north of the Bay of Naples, Italy. Image courtesy of INGV. One of the writing assignments I always enjoyed in high school was the “compare and contrast”. You could sit back and look for stylistic differences between writers and texts –…

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…

Monday Musings

I knew that the minute I said I’d be back to a “regular” posting schedule that I would fail miserably, so maybe the less said, the better. Cerro Galan caldera in Argentina (taken from space). Thanks to all the readers who have been avidly discussing a number of fascinating topics over the weekend. I have…

Wednesday Whatzits

Two papers submitted, one to go. Keeps you quite busy, let me tell you. Lava flow from a 2006 eruption on Mayon in the Philippines. A few bits of news today: A few more details about the ongoing watch of Mayon in the Philippines . There have been apparently no changes in the shape of…

Eruptions Mailbag for June 2009

Chaiten in Chile erupting in January 2009. Even after over a year of activity, Eruptions readers are still captivated by the volcano. Thanks for sending me your questions about volcanoes and volcanism. I’ll try to tackle some hear – but as always, keep the questions coming! Send them to For those of you who have…

Friday Flotsam

Volcano news ahoy, today brought to you by Islands. Lake Kivu, located along the border the Democratic Republic of the Congo and Rwanda A gorgeous satellite image (brought to us by the NASA EO) of a steam plume and ash from the ongoing eruption at Shiveluch in Kamchatka. The ash distribution stands out remarkably well…