Author Archives: John A. Stevenson

Happy Anniversary Grímsvötn

Yesterday was the first anniversary of the 2011 eruption of Grímsvötn.  Despite being the largest eruption in Iceland in 50 years, the day passed without much fanfare as the eruption had a relatively small impact compared to a certain other … Continue reading

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EGU2012 Open Source Software in Geosciences

A splinter session yesterday drew a larger-than-expected crowd to talk about the use of free and open source software (FOSS) in the geosciences.  Those in attendance spanned the range from developers to end-users and the main outcome is that there … Continue reading

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EGU2012 broken wifi workaround

There is a problem with the wifi in the conference centre at EGU2012.  Some people can log on, but others cannot.  They can connect to the wireless, but trying to browse the web results in ‘Page not found’ or DNS … Continue reading

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Science conference posters with Scribus

When you have the right tools to do a job, it is a lot easier to do it well. Consider making a poster for a science conference. Two software programs commonly used to make posters are Powerpoint and Adobe Illustrator … Continue reading

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An Icelandic eruption 100 times more powerful than Eyjafjallajökull

Eyjafjallajökull was a relatively small eruption This month marks the second anniversary of the eruption of Eyjafjallajökull that left millions stranded across Europe, and cost airlines an estimated €150 million a day for six days. But alarmingly, this eruption was … Continue reading

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Sounds of the Underground

This is a post that I originally wrote in June 2007.  It contains sound files that let you hear the crashings and rumblings that go on beneath the ground near Volcán de Colima, Mexico.  I’m reposting it today because a) … Continue reading

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One year of volcan01010: Best of 2011 and coming up in 2012

This week is the first anniversary of the volcan01010 blog.  With this post, I want to pick out some highlights from 2011, and to whet your appetites for some things to come in 2012. Top 3 posts: The main aim … Continue reading

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A Very Scottish Skyline

In 2014, Scotland will have a referendum to ask the people if they want to become an independent country.  The Scottish National Party will be campaigning hard for a ‘Yes’ vote.  Does that extend to some kind of deal with … Continue reading

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Iceland’s melting glaciers and other stories from the Nordic Geological Winter Meeting

This post describes my highlights from the 30th Nordic Geological Winter Meeting that took place in Iceland last week. The most interesting results include that Iceland’s glaciers may be gone in 200 years, that the May 2011 Grímsvötn eruption was … Continue reading

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Colima lahar videos

The Indonesian word, lahar, is the technical term used to describe volcanic mud flows. This post explains the difference between two types of lahars (hyperconcentrated flows and debris flows), using videos that I recorded at Volcán de Colima as examples. … Continue reading

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