February 22, 2016. EN. Sabancaya , Momotombo , Chimborazo , Popocatepetl .
February 22, 2016.
Sabancaya , Peru :
During the last hours several earthquakes of magnitude 2.5 to 5.4 degrees occurred in the province of Caylloma. The Volcanological Observatory Geophysical Institute of Peru (IGP) connects these seismic vibrations to an increase in activity of Sabancaya volcano, located about 100 km northwest of Arequipa. The active volcano 5976 meters high in the Andes in southern Peru is the most active volcano in Peru and is one of a long chain of three large stratovolcanoes oriented North South on 20km.
The vibrations strongly felt, damaged 33 houses in the districts of Cayllominos, Coporaque Ichupampa and Maca. Four houses of mud and straw collapsed together, five are uninhabitable. There are no injuries, authorities warned the population against the risk of aftershocks. Prensa Latina.
Communique of the IGP:
Earthquakes recorded in the vicinity of Maca are in part linked to the activity of Sabancaya. Recent earthquakes recorded around Maca, in the province of Caylloma, are in part linked to activity of volcanic massif Sabancaya, which since February 2013 through a seismic unrest, explained Dr. Orlando Macedo, director of the Observatorio Vulcanológico del Sur (OVS) of the Instituto Geofísico del Perú (IGP). The Observatory’s experts came to this conclusion after analyzing many earthquakes in the region presented. To do this, they located 31 representative events with magnitudes between M2.5 and M5,4 (local magnitude), which took place between 7:40 p.m. and 6:51 pm pm yesterday and today, at a distance of about 5 km and 8 km south of Maca.« These earthquakes occurred in swarms (continuous suites of earthquakes with a magnitud variablese), which show a partial influence on the activity of Sabancaya. There also, next to the town of Maca, and in general in the Colca valley, several geological faults that make this resort a highly seismic zone, « he said .The Dr. Macedo noted that the recent earthquakes are not near the crater. « If these earthquakes in the coming days begin to approach the crater of Sabancaya, this would indicate a greater influence on the activity of the massif itself, a situation which the OVS will be ready to report in time timely « , he concluded.
Sources : Prensa Latina , IGP Perou .
Photo : Summitpost
Momotombo, Nicaragua :
Momotombo volcano continues to record explosions.
21 FEBRUARY 2016. The Momotombo volcano, located in the department of León, recorded four more explosions on Sunday 21 February, as reported by the Seismological Network of Nicaragua Nicaraguan Institute of Territorial Studies (INET).
The latest explosion occurred at 03:48 pm, in this case the volcano spewed a vast smokescreen that was raised several meters above the crater. The first explosion started around 12:05 madrugada.En images provided by the cameras monitoring Ineter can see that the giant ejects ash, rocks and gases.
The smoke cleared about three o’clock in the morning. The second explosion occurred at 9:34 am, then another at 24:53 was recorded.
Last week, the First Lady, Rosario Murillo, told the media that the recent activity being experienced by volcanoes Momotombo, Masaya and Telica is « atypical », according to the conclusions reached experts who arrived in Nicaragua to study volcanoes.
Source : La Prensa
Chimborazo , Ecuador :
Specialists identify areas of snowmelt at Chimborazo volcano.
21 FEBRUARY 2016. A group of experts from the Secretariat of Risk Management (SGR), the National Institute of Meteorology and Hydrology (Inamhi) and the Geophysical Institute (IG-EPN) National Polytechnic School conducted a flyby by the volcano Chimborazo, nestled in the Andes of Ecuador.
The event took place on board an aircraft of the Ecuadorian Air Force (FAE) which departed from Cotopaxi International Airport yesterday, Saturday, February 20, 2016. The crew and six experts checked the area of the solid snowmelts.
In addition, they collected information to determine the risk areas where mudflows descend, because of melting glaciers from the volcano, located 6,310 meters above sea level. Pablo Morillo, the Zonal Coordinator of the SGR, said the flight showed the sensitive places that may potentially affect the population with the increased snowmelt.
A decline of mud and stones has been recorded since December 2015, due to the part-melting of a glacier. The community of Santa Lucia Chuquipogyo, San Andrés parish in Guano, is one of those affected by the snowmelt lahars.
« In the hour long flight, flyby pictures of all sides of the volcano were taken; these showed that there are areas that could potentially lead to the accumulation of more melting, » said Morillo. Meanwhile, IG technicians performed work with a thermal camera in the volcano.
The reports of specialists and Inamhi IG will be delivered in the coming days. The study confirmed the potential progress of the thaw in the volcano and results will be delivered to the Committee for Emergency Operations in the province of Chimborazo.
Glacier-clad, 6310-m-high Chimborazo, Ecuador’s highest volcano, anchors the southern end of the country’s « Avenue of Volcanoes » 30 km NW of the city of Riobamba. The dominantly andesitic-to-dacitic structure is mostly of Pliocene-to-Pleistocene age. The volcano collapsed about 35,000 years ago, producing a major debris avalanche, whose deposits underlie Riobamba and temporarily dammed the Río Chambo, producing an ephemeral lake. Subsequent eruptions have been dominantly andesitic and constructed three edifices along an east-west line, the youngest and westernmost of which forms the current summit of Chimborazo. Although activity was at one time thought to have ceased during the very latest Pleistocene, recent work indicates that it erupted more than a half dozen times during the Holocene, producing pyroclastic surges that reached down to 3800 m elevation.
Photos : espritrando-reflexphotos.org
Popocatepetl, Mexico :
February 21 11:00 h (February 21 17:00 GMT)
In the last 24 hours, through the seismic records of the surveillance system of Popocatepetl volcano, 71 exhalations of low intensity were identified, along with discharges of steam and gas .
Overnight, glow was observed over the crater .
Along the time covered by this report there has been a release of steam and gas that winds despersed to the southwest .
CENAPRED emphasizes that people SHOULD NOT go near the volcano, especially near the crater, due to the hazard caused by ballistic fragments.
This type of activity is included within the scenarios Volcanic Traffic Light Yellow Phase 2.
Source : Cenapred .
Photo : Volcan Popocatepetl.