Anak Krakatau eruption and tsunami, Indonesia

A fascinating, yet soberingly unfortunate geologic event that deserves some coverage here. BBC has some excellent insights:

as well as The Guardian:


Just added to – Supervolcanoes page

yellowstone-caldera-usgsJust drop the word “supervolcano” at the beginning of a lesson and – wow! – are the students energized and inquisitive. Many of them have heard of supervolcanoes, some may have seen video and others may even connect them to Yellowstone National Park in the United States. But some don’t have a clue what you’re talking about, but are galvanized by what they hear.

I’ve just added a sub-section to the Volcanoes page of on Supervolcanoes. I’ve included resources from TedEd, National Geographic, USGS and BBC GCSE Bitesize – all great and interactive. I’ve also added one of the shorter videos I’ve found – many are almost an hour long which I find too long for classroom use. This one is 28 minutes and it’s not just about Yellowstone, but talks about Tambora and even the Deccan and Siberian Traps. The TedEd vid, as usual, is short and to the point.

So, if you have the time (or even if you don’t), this is a great set of resources that will get your students thinking. Do stress, though, that the chance of this happening in even the next thousand years is extremely slim. We don’t want to create unnecessary anxiety!

Rift Valley Dynamics

MtLongonotIt must be video week. Or perhaps it’s because I’ve looked at so many static pages lately.

While doing some research at the European Space Agency Observing Earth website, I came across this video showing the amazing use of satellite technology for measuring deformation around volcanoes. It’s called Rift Valley Dynamics and it is meaningful to me, at least, as the research is from the Great Rift Valley of East Africa – near and dear to my heart.

What I found particularly compelling was how accurate satellites could be and how well the researchers and producers could portray what they were doing visually and without words in 4 minutes. A great addition to any class on volcanoes or remote sensing.

To learn more about Plate Tectonics and Volcanoes, visit > Plate Tectonics and > Volcanoes.