Ubinas volcano is Peru´s most active volcano with the composite cone rising to 5276 m on a high plateau. In the last 300 years Ubinas had 14 confirmed VEI 2 eruptions, the last ones in 2006 and 2013, see the GVP report for the eruptive history. The younger of the two major edifices Ubinas 1 and 2, erupts andesitic and trachyandesitic lava. The summit is truncated by a steep-walled, 150-m deep caldera containing an ash cone with a 500-m wide vent that is 200 m deep. Growth and destruction carries through the hundred thousands of years of history of this volcano, debris avalanches extending as far as 10 km.
IGP reported that a phreatic explosion from Ubinas occurred at 14 February and generated a water vapor, gas, and ash plume that rose 1 km above the crater. From the the latest IGP report (in Spanish): In January a slight increase in long period (LP) earthquakes, a hallmark of moving fluid, was recorded with a maximum in early February. Since 9 February volcanotectonic (VT) earthquakes indicated fracturing of rock at a depth of 9 km and higher. Later in February hybrid events and harmonic tremor, as a sign of degassing, indicated that magma had come close to the surface. SO2 emission rose from normally 155 tons per day to 1300 tons per day in mid February and a thermal anomaly was detected in the crater. Update: The IGP report from 6 March sais that seismicity is still weak to moderate and SO2 emission has slightly decreased. Fresh lava was visually observed in the crater.
Because the current seismicity is not very energetic IGP only expects a small eruption, possibly within the next days or weeks, thus the volcano will stay at a low alert level (yellow) for now. Yesterday the IGP repeatedly recommended the evacuation of the 25-family village Querapi which lies less than 4 km southeast of the steep summit within the red danger zone. Last year authorities planned to permanently relocate the village within a year.
The Observatorio Vulcanológico del INGEMMET (OVI) webcam shows the volcano gently steaming this morning:
Volcanodiscovery Ubinas: http://www.volcanodiscovery.com/ubinas.html
Wikipedia Ubinas: http://en.wikipedia.org/wiki/Ubinas
Volcano World: http://volcano.oregonstate.edu/ubinas
VolcanoLive , John Seach: http://www.volcanolive.com/ubinas.html
And News: 2 days ago the National : http://www.peruthisweek.com/news-scientists-recommend-evacuation-of-town-near-ubinas-volcano-in-peru-102428
Volcanic News Eruptions (http://volcansvanuatueruptionsgb.blogspot.fr ) http://volcansvanuatueruptionsgb.blogspot.fr/2014/03/07032014-etna-tungurahua-pacaya-ubinas.html
IGP report from yesterday: http://www.igp.gob.pe/reportevulcanologico/files/Ubinas/2014/Comunicado%20OFICIAL%20N002-2014.pdf
As usual there is a volcanologist, a volcanic term and 3 different volcanoes hiding in these riddly brainwrecks. 2 points will be awarded for solving the riddles before I start to append clues. Get them while they are fresh!
- Plastic terrestrial + image – Astenophere (Kelda 2, pt)
- Ancestral home of Hugo de Long’s McDonald’s restaurant (Focus on the words Long and Hugo and you will get there) – Lōʻihi Seamount (Spica, 1pt). Lōʻihi meaning long in Hawaaian and HUGO standing for Hawaii Undersea Geological Observatory. Gordon A. MacDonald lived in Hawai’i and explored Lōʻihi Seamount.
- Desert musk and honey of the UN (Danakil) – Ardoukoba in Djibouti (Dinojura44, 1pt). The nearby town is the hub of the musk trade and the Assal Crater Lake is literally Honey Lake.
- Here I smelt my special carbonate (French helps a lot) – Dieudonné
Sylvain Guy Tancrède de Gratet de Dolomieu (Dinojura44 & DFM, 1pt). Dolomieu named Piton de la Fournaise and the carbonatite known as Dolomite. It is also the longest name ever for a volcanologist.
- From Bethlehem came the Red Oak (Maritime answer) – Victory Volcano (Matt, 1pt & GeoLurking, 1 bonuspoint). Bethlehem was involved in the design of the Victory class ships. Red Oak Victory was a famous Victory ship.
10 Evan Chugg
CARL (Evil Riddler)