Eruptions

Archives for March, 2009

M7.9 earthquake in Tonga

This falls under the category of “when it rains, it pours”. A M7.9 earthquake struck today in the Tongan arc. It doesn’t appear to be related to the Hunga Tonga Hunga Ha’apai eruption as it occurred a few hundred kilometers to the SSE of the volcano (remember folks, correlation does not mean causation). The earthquake…

Mixing volcanoes and oceans seem to always produce exciting results. Whether it is something as simple as the ocean entry of a lava to something as impressive as a new island emerging, formed by volcanic eruption. Back in the 1960s, a previous unknown undersea volcano off the coast of Iceland erupted to form the island…

Redoubt back to Yellow Alert

Image from AVO Hut webcam for Redoubt After an exciting few days … well, OK … after an exciting few hours on Sunday, AVO has decided to lower the alert level at Redoubt in Alaska to Yellow/Advisory. The alert level was lowered last week after seismicity at the volcano returned to normal after weeks of…

I probably won’t comment too much on these, but if you need a rundown on every volcanic rumbling on the planet in a given week, nothing is better that the weekly reports compiled by the USGS/Smithsonian Global Volcanism Program. You can check them out both through the GVP website and as a convenient RSS feed.

The eruption of Hunga Tonga Hunga Ha’apai volcano in Tonga looks to be a big one. Keleti Mafi, head of the Tongan geological service, calls this “a very significant eruption, on quite a large scale”, which is no surprise considering some of the spectacular picture we saw of the eruption yesterday. In fact, the eruption…

New Eruption in Tonga

Image from keizo/weblog Hunga Tonga-Hunga Ha’apai (how’s that for a name?), a shallow seamount in Tonga, appears to have erupted. An air passenger snapped some pictures of an eruption occurring in the ocean between the Tongatapu and Vava’u and pilots in the area report that (unsurprisingly), the feature is new. Hunga Tonga-Hunga Ha’apai – at…

Redoubt update for 3/17/2009

Now that Redoubt has decided that Yellow/Advisory is not to its likely and has returned to an Orange/Watch status, I’ll continue bringing new updates of the volcano has events unfold. And nothing much has unfolded since the phreatic explosion that occurred on Sunday. The current state of the volcano, according to AVO, is minor seismic…

Eruptions archive has arrived

I’ve finished migrating my archives of the ol’ WordPress Eruptions (since May 2008), so if you’re looking for more information, try clicking “Archives” at the top of the page and wander through there. I will be updating the archives with category linked for each volcano, but that might take a while to retrofit. Enjoy!

Eruptions on Facebook

Oh yes, and if you’re into that sort of thing, you can follow Eruptions on the Facebook as well. I hear its on the interweb these days, so thats cool. Just click on the “Networked Blogs” link in the bottom left-hand side of this page (below the world map).

Waiting for disaster

Oldonyo L’engai, Tanzania As with most disasters, the best way to prevent a Katrina-like catastrophe is preparedness. The best successes in volcanic mitigation have been in places where the combination of monitoring, communications and practice fit together like so many legos in a set, allowing for a calm and orderly evacuation when the eruption, or…