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 Ubinas is Peru's most active volcano. A small, 1.4-km-wide caldera cuts the top of the volcano. The steep-walled, 150-m-deep summit caldera contains an ash cone with a 500-m-wide and 200 m deep crater Debris-avalanche deposits from the collapse of the SE flank of Ubinas about 3700 years ago extend 10 km from the volcano. Widespread plinian pumice-fall deposits from Ubinas include one of Holocene age about 1000 years ago. Holocene lava flows are visible on the volcano's flanks, but historical activity, documented since the 16th century, has consisted of intermittent minor-to-moderate explosive eruptions.
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Source: abbreviated from Global Volcanism Program information on Ubinas
Stratovolcano 5672 m (18,609 ft) Peru, -16.36°S / -70.9°W Current status: minor activity or eruption warning (3 out of 5) Ubinas webcams / live data | ReportsUbinas volcano videosUbinas volcano booksUbinas volcano eruptions:2014-16, 2009-2010, 2006-08, 1969, 1956, 1951, 1937, 1907, 1906, 1869, 1867, 1865, 1862, 1830, 1826(?), 1784, 1677, 1662, 1600, 1550 ± 50y Typical eruption style:Explosive Last earthquakes nearby
Latest satellite images  News from Ubinas volcano:Ubinas volcano (Peru): moderately strong explosions on 2 and 3 Oct 2016Tuesday Oct 04, 2016 12:05 PM | BY: T 
Eruption of Ubinas on 3 Oct 2016 A series of explosions occurred at the volcano on 2 and 3 Oct. The first (and strongest one) was at 22:50 (local time) followed by two more at 04:24 and 05:52 (local time) and another relatively powerful one in the evening at 17:15 on 3 Oct.
The ash plumes reached more than 2000 m and drifted northeast and light ash falls occurred in the villages of Santa Rosa, Phara Yanapuqui, and Ubinas at 5 km SE of the volcano.
The new eruptions, the first explosions since January 2016, came not as a large surprise as Peruvian volcanologists had observed significant changes in the volcano's monitoring data from mid-September, in particular increased seismicity.
The overall seismic activity had increased further at the end of last month, and included signals typical for internal fluid movements (tremor and long-period earthquakes) as well as rock-fracturing signals, typical for shallow magma movements.
At the surface, intense degassing had been observed since mid September. Previous news
Monday, Oct 03, 2016 Volcanic Ash Advisory Center Buenos Aires (VAAC) issued the following report: ... [more] Thursday, Sep 15, 2016 The volcano has been showing increased signs of unrest that could herald a new phase of activity in the new future. ... [more]
Saturday, Jan 16, 2016 A moderately large vulcanian-type explosion occurred at the volcano yesterday 12:53 local time. An ash plume rose 3 km above the crater and drifted SE. Light ash fall occurred in up to 10 km distance, including the villages of Sacohaya, Querapi and Ubinas. ... [more] Friday, Nov 13, 2015
Another small explosion occurred this afternoon at the volcano, similar to the event a week ago. An ash plume rose approx. 500 m above the crater and quickly dissipated. [more]Friday, Nov 06, 2015 A small explosive eruption occurred last evening, producing an ash plume that rose approx. 1 km above the crater and quickly dissipated. Seismic activity at the volcano remains low, according to the corresponding bulletin of Buenos Aires VAAC. [more]More on VolcanoDiscovery: Recent volcano satellite images: Browse quickly through the latest satellite imagery from volcanoes all over the world in order to spot ash clouds and hot spots.  Volcano Special Tours: We organize tours to particularly active volcanoes and during ongoing eruptions for extended observation time from various viewpoints. These trips, exclusively for very small groups, are often announced only at short notice and require fast travel and flexibility. Each trip is accompanied by a volcanologist from our team. Examples include: Kilauea (Hawai'i), Colima (Mexico), Krakatau and many others. |
