Pyroclastic flow

Eruptions

Category archives for Pyroclastic flow

Shiveluch volano in Russia. Just like last summer seemed like a busy time for the Aleutians (Cleveland, Okmok and Kasatochi), this summer could be dubbed the “summer of Kamchatka-Kurils” (alright, it isn’t that catchy, sorry). The biggest news was/is, of course, the sizeable eruption from Sarychev Peak in the Kuril Islands, but not to be…

Sarychev Peak erupting on June 12th. Image taken on the ISS, courtesy of the NASA EO. The eruption as Sarychev Peak seems to be waning a bit, at least according to some of the latest images from the NASA Earth Observatory’s collection of MODIS shots. The ash plume is less prominent – and strikingly more…

Volcano Profile: Mt. Vesuvius

The latest in my Volcano Profiles Series, we turn to Europe and Vesuvius. You could fill many, many volumes with the works produced on Vesuvius since Roman times. This profile will barely scratch the surface when it comes to the vast geologic and human history surrounding the volcano, but it is a start. If you…

The clock is ticking for the new dome growing at Redoubt to collapse. What will happen if/when it does collapse? Good question! The new dome at Redoubt. Image courtesy of AVO/USGS, taken by Game McGimsey, April 30, 2009. Most likely, the following will occur: First, extrusion of lava will cause the dome to over-steepen, precipitating…

Volcano Profile: Mt. Hood

Back in the days when Eruptions was on WordPress, I held a vote about what volcano should be the next to be profiled on this blog. The winner was Mt. Hood in Oregon, and after much waiting, the profile is here. I will actually be out of town until Monday doing some house shopping in…

Redoubt with a prominent steam plume on April 7,2009. Image courtesy of Robert Cole/AVO Eruptions reader Brian just pointed out that AVO has posted a new webcam (well, a redirectly webcam) for the volcano and I thought it deserved its own post. This new angle gets you right up to the new dome forming on…

Chaiten erupting on January 19, 2009. Image courtesy of the NASA Earth Observatory. It is hard to believe that we are less than one month away from one-year anniversary of the beginning of the eruption at Chaiten (and with it, the one-year anniversary of this blog!) The volcano in southern Chile is still erupting away,…

Tambora, Indonesia There are big eruptions, then there are big eruptions. On April 10, 1815, Tambora, a volcano in Indonesia, produced one of the largest eruptions in human history. This eruption produced what became known as the “year without a summer” after the volcanic aerosols from the eruption produced some of the coldest summers in…

Today looks to be a doubleheader of volcano news: Redoubt Image courtesy of AVO/USGS, taken by Rick Wessels. An infrared image of the north slope of Redoubt showing the hot, new dome material and hot block & ash flows confined to the valley. At 11:30 AM yesterday, AVO put Redoubt back to Orange/Watch alert status…

Image courtesy of AVO/USGS by James Isaak. Photo taken 3/31/2009. No, this isn’t Battlestar Galactica, but the same can be said for the Drift River Oil Terminal: this has all happened before and will all happen again. Coast Guard officials have (finally) decided to move ~6.3 million gallons of crude oil from the Chevron-owned Drift…