{"id":5413,"date":"2015-01-23T21:14:34","date_gmt":"2015-01-23T21:14:34","guid":{"rendered":"http:\/\/icelandgeology.net\/?p=5413"},"modified":"2015-01-24T02:49:11","modified_gmt":"2015-01-24T02:49:11","slug":"bardarbunga-volcano-update-for-23-january-2015","status":"publish","type":"post","link":"https:\/\/icelandgeology.net\/?p=5413","title":{"rendered":"B\u00e1r\u00f0arbunga volcano update for 23-January-2015"},"content":{"rendered":"

Current activity in B\u00e1r\u00f0arbunga<\/a> volcano remains the same. The eruption in Holuhraun continues, at bit slower rate now than it was some ten days ago according to latest news. This is not surprising, since last eruption in B\u00e1r\u00f0arbunga volcano that was like this only lasted for around 8 months. That formed the craters named Tr\u00f6llag\u00edgar (more information at the end of this article). Flow of lava out of the crater is now estimated to be around 60m\u00b3\/sec. It was also noted in the news that cauldrons in the glacier on top of B\u00e1r\u00f0arbunga volcano have been getting deeper in past few weeks, this means the area and the volcano it self is getting hotter. This means that magma has risen up along the caldera rim and warmed up the crust. This is important since magma cannot warm up the crust like this unless it is shallow, less depth then 2 km and in some areas less then 1 km. One reason why Holuhraun eruption might<\/em> be coming to a end is that the magma has found a new and easier path up to the surface. The magma appears to be deep sourced and that is a problem, since it is harder to impossible to monitor and speculate on deep magma chamber. Since shallower magma chambers can often be monitored by earthquake activity, there is no such thing for magma chambers on more depth then 20 km in the crust.<\/p>\n

\"dyn.svd.23.01.2015.at.18.43.utc\"<\/a>
\nHarmonic tremor in the past few days from the eruption in Holuhraun. Drops in harmonic tremor are sign of drop in the eruption. The eruption is now fluctuating (in my view) that at times stroke activity (the little that is) is possibly stopping at times. Copyright of this image belongs to Icelandic Met Office.<\/em><\/p>\n

\"150123_2010\"<\/a>
\nEarthquake activity in B\u00e1r\u00f0arbunga volcano for the past 48 hours. Copyright of this image belongs to Icelandic Met Office.<\/em><\/p>\n

Earthquake activity remains around the same in B\u00e1r\u00f0arbunga volcano for the past 48 hours. There has not been a magnitude 5,0 or larger earthquake in the past 15 days according to latest news. Earthquake activity remains high in B\u00e1r\u00f0arbunga volcano. This earthquake activity has however been dropping since August-2014 when it was peaking around 12.000 earthquakes a week (around 3000 earthquakes a day).<\/p>\n

The rifting event<\/strong><\/p>\n

When the eruption in Holuhraun ends, it is just going to mean that the Holuhraun eruption has ended. The rifting is going to continue for a long time after the eruption has ended. The models that I work with (in my head, I don’t got a supercomputer) suggest that it might migrate south along B\u00e1r\u00f0arbunga volcano fissure swarm. This is difficult to predict for sure, but there are data (cracks in the ground forming over the past few years) suggesting that a large area is going to rift. This rifting is going to start eruptions, both short and long along this area. Part of this eruption risk area is under thick glacier (Vatnaj\u00f6kull glacier). That is going to start glacier flood that area going to damage everything in there path.<\/p>\n

What is also impossible to know for sure is how long this rifting is going to last. Past episodes suggest that active periods like this normally last from 5 – 10 years. Sometimes shorter and sometimes longer, depending on how long it has been since last rifting episode took place. Last rifting episode in this area might been ~100 years ago in part of the system. I don’t know this for sure, but this is what the data suggests<\/em>.<\/p>\n

Tr\u00f6llag\u00edar crater information<\/strong><\/p>\n

Vei\u00f0iv\u00f6tn<\/a> (need.is)
\nVatnaj\u00f6kull national Park<\/a> (uef.fi, 39 page pdf document)
\nOld paper<\/a> and chemical analyse of eruptions in 18th century in B\u00e1r\u00f0arbunga (or that area). (timarit.is, Icelandic, part in English)
\nField trip to Vei\u00f0iv\u00f6tn \u2013 Heljargj\u00e1 \u2013 J\u00f6kulheimar<\/a> (earth.leeds.ac.uk, pdf file)<\/p>\n

Icelandic News<\/strong><\/p>\n

Gosinu \u00ed Holuhrauni g\u00e6ti loki\u00f0 \u00e1 n\u00e6stu vikum<\/a> (V\u00edsir.is, Icelandic)
\nDregi\u00f0 hefur \u00far virkni gossins \u00e1 yfirbor\u00f0i<\/a> (V\u00edsir.is, Icelandic)
\nMik\u00adil virkni enn \u00ed B\u00e1r\u00f0arbungu<\/a> (mbl.is, Icelandic)<\/p>\n

Donations<\/strong><\/p>\n

I am currently waiting for PayPal to finish validating my new account in accordance with EU anti-money laundry rules. I don’t know how long this process is going to take. I hope it won’t be long. While that happens, I want to point out that it is possible to support my work by buying from Amazon (select your area before you shop) or by support my work directly by bank transfer. Information on donations with bank transfer can be found on “Donations” site. Thanks for the support. \ud83d\ude42<\/p>\n

Comments<\/strong><\/p>\n

Please keep comments on topic (minor off-topic is ok if you get bored, but I recommend youtube or some game if you get bored). Please do not flame. I want to point out that nobody has clear idea what is going in B\u00e1r\u00f0arbunga volcano. Often nobody knows for sure what is going on in B\u00e1r\u00f0arbunga volcano.<\/p>\n

Article updated at 21:36 UTC.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Current activity in B\u00e1r\u00f0arbunga volcano remains the same. The eruption in Holuhraun continues, at bit slower rate now than it was some ten days ago according to latest news. This is not surprising, since last eruption in B\u00e1r\u00f0arbunga volcano that was like this only lasted for around 8 months. That formed the craters named Tr\u00f6llag\u00edgar … <\/p>\n

Continue reading “B\u00e1r\u00f0arbunga volcano update for 23-January-2015”<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7,18,24,10,34,71,170,17,89,9,173,82,64,40,96,171,57,172,32],"tags":[],"class_list":["post-5413","post","type-post","status-publish","format-standard","hentry","category-bararbunga","category-deflation","category-dyke-intrusions","category-earthquakes","category-eruptions","category-fissures","category-gas","category-gps-data","category-gps-monitoring","category-harmonic-tremors","category-holuhraun","category-lava","category-magma","category-monitoring","category-mountain","category-so2","category-swarm","category-toxic","category-volcano"],"_links":{"self":[{"href":"https:\/\/icelandgeology.net\/index.php?rest_route=\/wp\/v2\/posts\/5413","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/icelandgeology.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/icelandgeology.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/icelandgeology.net\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/icelandgeology.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5413"}],"version-history":[{"count":15,"href":"https:\/\/icelandgeology.net\/index.php?rest_route=\/wp\/v2\/posts\/5413\/revisions"}],"predecessor-version":[{"id":5433,"href":"https:\/\/icelandgeology.net\/index.php?rest_route=\/wp\/v2\/posts\/5413\/revisions\/5433"}],"wp:attachment":[{"href":"https:\/\/icelandgeology.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5413"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/icelandgeology.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5413"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/icelandgeology.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5413"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}