News from Ubinas volcano:
Ubinas vulkaan (Peru): nieuwe explosies
vr, 6 sep 2013, 09:2909:29 AM | DOOR: T
Nieuwe uitbarstingen op de vulkaan. Het lijkt meer en meer waarschijnlijk dat de freatische explosies zijn een gevolg van nieuwe magma stijgen van diepte, en de vulkaan kon gaan naar meer duurzame en eventueel grotere magmatische activiteit in de nabije toekomst.
Ash explosion from Ubinas yesterday (INGEMMET)
An explosion yesterday at 16:22 (local time) produced an impressive ash plume of 3 km height, followed by a smaller one at 17:48 with an ash plume of 500 m height. These have so far been the largest in the current phase of activity.
INGEMMET recommends preventive evacuation of the inhabitants of the village of Querapi, located just 4 km south of the summit and therefore particularly vulnerable to volcanic hazards, including ash fall and possible pyroclastic flows that are likely generated if the activity continues to increase.
The volcano's hot springs provide important water sources for the desert area and their composition is being closely monitored, because of the possibility of contamination by volcanic fluids. External water storage (ponds, cisterns) is at risk of pollution by volcanic ash.
Koppelingen / Bronnen:
Koppelingen / Bronnen:
Wed, 4 Sep 2013, 06:36
The volcano woke up with a series of small ash explosions over the past days. The first and largest occurred on Sunday (1 Sep) and 4 smaller ones followed on Monday and Tuesday. ... Lees alle
Thu, 15 Jan 2009, 23:07
On 11 January there was an ash plume at Ubinas that was rosing to an altitude of 7.3 km. ... Lees alle
Fri, 31 Oct 2008, 14:49
There are still continuously emitted ash plumes that rose to altitudes of 5-7 km. ... Lees alle
Thu, 23 Oct 2008, 11:10
Ubinas continues to produce near-continuous strong ash explosions that produce plumes rising to altitudes of 5-7 km (16,000-23,000 ft) a.s.l., which over the past week mostly drifted SE and NW. ... Lees alle
Sun, 14 Sep 2008, 21:43
Based on SIGMET reports and pilot observations, the Buenos Aires VAAC reported that during 5-6 September ash plumes from Ubinas rose to altitudes of 5.5-6.4 km (18,000-21,000 ft) a.s.l. and drifted NE and SE. Geologic Summary. A small, 1.2-km-wide caldera that cuts the top of Ubinas, Peru's most active volcano, gives it a truncated appearance. Ubinas is the northernmost of three young volcanoes located along a regional structural lineament about 50 km behind the main volcanic front of Peru. The upper slopes of the stratovolcano, composed primarily of Pleistocene andesitic lava flows, steepen to nearly 45 degrees. The steep-walled, 150-m-deep summit caldera contains an ash cone with a 500-m-wide funnel-shaped vent that is 200 m deep. Debris-avalanche deposits from the collapse of the SE flank of Ubinas extend 10 km from the volcano. Widespread Plinian pumice-fall deposits from Ubinas include some of Holocene age. Holocene lava flows are visible on the volcano's flanks, but historical activity, documentedsince the 16th century, has consisted of intermittent minor explosive eruptions. ... Lees alle