February 3, 2016 - EARTH - The following constitutes the new activity, unrest and ongoing reports of volcanoes across the globe.
Popocatepetl (Mexico): In the last 24 hours the Popocatepetl had nine explosions and 35 exhalations of low intensity, according to the monitoring system of the volcano, reported Cenapred.
In its latest report, the body of the Ministry of the Interior explained that four of the nine explosions occurred yesterday at 15:33, 20:19, 21:22 22:48 hours and five on Tuesday.
Also said that since Tuesday morning has been a slight emission of water vapor and gas that winds have scattered to the east-northeast.
He recalled that the light of volcanic alert remains at yellow phase two level at which it is contemplated that the explosive activity continues at a low level, falling ash and even possibility of pyroclastic flows and mudflows.
So the Cenapred urged people not to approach the volcano by the danger of falling ballistic fragments and suggested the public be alert to warnings authorities disseminate Civil Protection.
WATCH: Live streaming Popocatepetl volcano.
Copahue (Chile): Ash plume from Copahue yesterday During the past weeks, the El Agrio crater has continued to emit weak, but near-continuous emissions of fine gray ash.
Incandescence remains visible at night.
|Ash plume from Copahue|
According to SERNAGEOMIN, this current activity, mainly phreatic, is caused by interaction of a small body of new magma interacting with the hydrothermal system at shallow depth.
Seismic activity, although above background, is relatively low as are other monitored parameters (e.g. deformation, SO2 output etc). No larger eruption is expected for the near future.
Barren Island (India): Minor eruptive activity (possibly strombolian) seems to continue on the remote island, at least intermittently.
|Steam / ash plume and thermal hot spot at Barren Island on February 1, 2016 (MODIS / VIIRS NASA imagery)|
Yesterday and the day before, a weak steam and possibly ash plume was visible on satellite imagery as well as a thermal hot spot.
Turrialba (Costa Rica): Weak, passive ash venting occurred yesterday at the western pit crater, showing that volcanic unrest continues.
Ash plume from Costa Rica's Turrialba volcano yesterday
Karymsky (Kamchatka): Several ash plumes reaching estimated 13-16,000 ft (4-5 km) altitude have been reported by Tokyo VAAC during the past days, suggesting that the volcano's intermittent explosions are currently more frequent and relatively intense.
Masaya (Nicaragua): INETER reported ongoing strong seismic and surface activity.
There here are currently two small lava lakes active contained in two pits inside the Santiago crater. Access to Masaya's crater rim, a very popular tourist destination, was closed to the public on Saturday.
An earthquake of magnitude 3 on Friday, felt by many residents, probably accompanied the opening of the second vent in the NE section of the crater.
A third vent is in the process of forming in the SE section of the crater, the latest INETER report stated.
Nevados de Chillán (Central Chile): A series of new explosions with small to moderate ash emissions occurred at the volcano during the end of last week.
This activity formed a second new crater, approx. 25x30 m wide and located 50 m beneath the northeast flank of Arrau crater, as SERNAGEOMIN staff observed on an overflight on 30 January.
|Aerial view of Nevados de Chillán volcano's Arrau crater on January 30, 2016 (SERNAGEOMIN)|
According to Chilean scientists, the activity is caused by phreatic (steam-driven) explosions in the shallow hydrotermal disturbances, not by fresh magma.
Temperatures in the crater areas were found to be relatively low (approx 120 deg C), which supports this interpretation as well.
It is likely that more explosions occur in the near future and an exclusion zone of 2 km around the crater was put in place.
Heard (Australia, Southern Indian Ocean): An eruption was observed by crew on board the CSIRO research vessel Investigator in late January.
WATCH: A lava flow was seen descending the NW flank of Mawson Peak.
Weak thermal anomalies were also detected on satellite data at the end of January. Whether the activity is still going on or not is impossible to determine - most of the days, the volcano is hidden beneath thick clouds preventing satellite observations.
- Volcano Discovery | El Universal [Translated].