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Volcano geodesy at Green Gabbro 9 January 2009

Posted by admin in geoblogosphere, geoscience, natural hazards, volcano monitoring.
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Over at Green Gabbro, Maria Brumm has posted a crystal-clear explanation of the use of GPS networks to measure surface change, which can be an important indicator of volcanic activity. Great cartoon, among other things.

Green Gabbro: Volcano Geodesy 101

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A new geoblog list 8 January 2009

Posted by admin in blogs, geoblogosphere, web resources.
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A new list of the ‘100 Best Blogs for Earth Science Scholars’ was published a little while ago at this site. The Volcanism Blog is in the list, which is much appreciated.

The Volcanism Blog

Volcano art at Magma Cum Laude 5 January 2009

Posted by admin in blogs, geoblogosphere, volcano art, volcano culture.
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New from Magma Cum Laude: ‘Go for the art, stay for the volcanoes’ is a post on the exhibition Pompeii and the Roman Villa: Art and Culture around the Bay of Naples at the National Gallery of Art, Washington DC, which Jessica has been fortunate enough to visit. She reproduces some wonderful eighteenth-century paintings of Vesuvius in eruption and some of the beautiful pages from Sir William Hamilton’s Campi Phlegraei (1776). A great article on what looks like a great exhibition.

[And there’s a nice link to this Volcanism Blog post. Thanks!]

The Volcanism Blog

Two blogging birthdays 25 December 2008

Posted by admin in blogs, geoblogosphere.
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Many happy returns to two of the very best geoblogs around, Callan’s NOVA Geoblog and Jessica’s Magma Cum Laude, both of which have just marked their first anniversary. Hearty congratulations, and long may you both thrive!

The Volcanism Blog

Alu/Dalaffilla eruption – photographs 19 December 2008

Posted by admin in activity reports, Africa, Alu, Dalaffilla, eruptions, Ethiopia, geoblogosphere.
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In November an eruption occurred in the Afar region of north-east Ethiopia. Two pictures of that eruption from ground level have been published by Sylvie and Daniel Chereau’s volcano site: they were taken by Claude-Henri Mussat on 3 and 4 November and show a lofty plume. The pictures are copyrighted, so are not reproduced here – click on the link above to view.

In a new post today at the same site, there is an interesting (French language) summary, with many images, of the debate over the location of the eruption: Alu, Dalaffilla, or a point in between? The evidence from satellite imagery is strongly in favour of the latter – a fissure eruption from between Alu and Dalaffilla – but the possibility remains that the two volcanic centres are part of the same complex. More research needed …

For more on the Ethiopian eruption: Ethiopia « The Volcanism Blog.

The Volcanism Blog

New geoblogosphere aggregator 26 November 2008

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Building on the geoberg.de list of geoblogs, the folks at the Stratigraphy.net internals blog have put together a new geoblogosphere aggregator. They plan to do something very clever and chronostratigraphic with it in due course. In the meantime it’s a very useful survey of the geoblogosphere, so I’ve added it to the ‘Geoblogs’ section of the link list on the right.

The Volcanism Blog

From the geoblogosphere – dikes and tsunamis 9 October 2008

Posted by admin in blogs, geoblogosphere, geoscience.
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A couple of very interesting new geoblogosphere posts of strong volcanic interest:

Dike swarms and continental barcodes from Highly Allocthonous – the ‘magnetic barcodes’ of dikes in now separate continental fragments can be matched up, showing that at the time the dikes were created the fragments in question were in close enough proximity to be affected by the same episode of igneous intrusion.

Volcanic flank collapse and tsunamis from Dave’s Landslide Blog – a discussion of the Tongatapu boulders, possibly the largest tsunami debris yet identified, the result (it is argued) of a submarine volcanic eruption and flank collapse. 

The Volcanism Blog

The geoblogosphere at geoberg.de (updated) 30 September 2008

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As noted here on 26 September, the German geology site geoberg.de has published a categorized list of geoblogs that is about as comprehensive as any such list could be. The list was initially available only in German, but Lutz at geoberg.de has gone to the trouble of translating it into English – many thanks to him!

The list is constantly being updated and revised (currently standing at 101 blogs), and you can leave suggestions for further additions and revisions via the comments facility on both English and German lists. The links to both versions of the list are as follows:

This list, which was initially published on 27 August 2008, is now spreading across the Anglophone geoblogosphere, which is great. Credit where credit is due, however: Kevin Nelstead at The GeoChristian posted about the geoberg.de list back on 11 September (which is where I heard about it).

The Volcanism Blog

The geoblogosphere at geoberg.de 26 September 2008

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Thanks to a posting at The GeoChristian I’ve just taken a look at a list of geoblogs posted at the German site geoberg.de, and I find that The Volcanism Blog is included, a fact of which I was unaware (although looking at my site statistics I see a steady flow of traffic from that source, so I should have spotted it really). Thanks to geoberg.de for listing this blog.

One of the points to emerge from Callan Bentley’s survey of the geoblogosphere is that it is hard to keep track of the ever-rising number of geoblogs out there (another was the importance of keeping an eye on your site statistics, ahem). There is no complete directory of geoblogs, but the geoberg.de list is the best I’ve seen so far. At the moment it lists 95 blogs, categorized according to topic.

UPDATE: As noted in the comments section below, much public-spirited nocturnal labour has produced an English-language version of the geoberg.de directory, listing over 100 geoblogs. Click here to view the list in English. Many thanks to Lutz at geoberg.de for all his work on this invaluable list.

The Volcanism Blog

The geoblogosphere surveyed 26 September 2008

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Callan Bentley of the NOVA Geoblog has just given a talk on ‘The Rise of the Geoblogosphere’ to the Geological Society of Washington, and has posted a detailed summary and slideshow presentation on his blog. The results of Callan’s recent survey of the geoblogosphere (in which The Volcanism Blog did not participate, mea culpa) provide interesting insights into what people think of the geoblogs and geoblogging and why they themselves geoblog.* It’s fascinating stuff.

* Favourite reason given: ‘To stop mom from emailing me for news all the time’.

The Volcanism Blog