Volcanic activity worldwide 23 Feb 2016: Dukono volcano, Sinabung, Nevado del Ruiz
Tuesday Feb 23, 2016 21:00 PM |
Explosion at Sinabung yesterday evening 18:19 local time (Image: @BeidarSinabung via Leopold Kennedy Adam / twitter)
Sinabung (Sumatra, Indonesia): The volcano continues to erupt with little changes overall: the activity consists of slow extrusion of viscous lava, interrupted by intermittent explosions (every few days on average) caused by sudden pressure release of trapped pressurized gasses. An explosion this morning was reported to have produced an ash plume that rose to 14,000 ft (4,2 km) altitude and drifted NW.
Morning view of Nevado del Ruiz volcano from Manizales town (SGC webcam)
The rising magma inside the conduit continues to accumulate at the lava dome, feeding lava lobes on the steep upper flanks. From time to time, parts of these collapse, the avalanches generate small to moderate pyroclastic flows traveling down the southern and southeastern flanks.
Dukono (Halmahera): Ash emissions continue to be observed from the volcano almost every day, suggesting that activity remains high. Darwin VAAC reported an ash plume at 10,000 ft (3 km) altitude extending 70 km to the WSW this morning.
Nevado del Ruiz (Colombia): SGC and VAAC Washington seem to confirm that an ash emission took place. A large steam plume with possible light ash content can now be seen on a morning view of the webcam in Manizales.
This morning, a pilot reported to The Colombian Geologic Service an ash plume from the volcano to 22,000 ft (6.7 km) altitude, which would indicate a moderate explosive activity at the volcano took place.
Whether or not this is the case is unclear at the moment, as sometimes weather clouds are being mistaken as ash plumes, in particular if the observation is at night (as in this case).
On the other hand, mild ash emissions from Nevado del Ruiz have been occurring intermittently during the past months and a somewhat larger emission as reported this morning would not come as a surprise.
Monday, Feb 22, 2016
Friday, Feb 19, 2016
Momotombo (Nicaragua): Activity at the volcano has been increasing. During the past days, explosions have become frequent, with intervals of only few hours. The largest on Wednesday evening at 20:50 local time showered almost the cone with incandescent ejecta and produced ash plumes up to 1 km tall. Unconfirmed reports suggest that some of the eruptions also have produced small pyroclastic flows. ... [meer...]
Thursday, Feb 18, 2016
Tuesday, Feb 16, 2016
Telica (Nicaragua): (16 Feb) Nicaragua's volcanoes remain in a particularly active state. A series of approx. 12 small explosions occurred at Telica volcano on Saturday morning, the Nicaraguan Institute of Territorial Studies INETER reported. Ash columns from the eruptions rose from 300 to 1000 meters above the crater. ... [meer...]
Monday, Feb 15, 2016