April 27 , 2016. EN. Klyuchevskoy , Turrialba , Momotombo , Masaya , Sabancaya .
April 27 , 2016.
Klyuchevskoy , Kamchatka :
Lava flow 500 meters long that empties from the central crater on the southeast slopes of Klyuchevskoy.
The lava flow up to 500 meters began to flow from the central crater on the southeast slopes of the highest volcano in Eurasia – the Klyuchevskoy. This is reported by the agency « RIA Novosti » with reference to the note by the FEB RAS.
The lava began to spread during the night of April 25. Now the luminous flux is up to 500 meters and flows on the southeast slope of the central crater. Lava emissions were preceded by a series of seismic events, earthquakes and ash emissions, according to experts.
Scientists continue to monitor the eruption with the help of special devices. Those do not make predictions on how will evolve the strength of emissions. Note that the eruption of the volcano Klyuchevskoy began on April 3.
On Monday night lava flows from the South-Eastern slope of the Klyuchevskoy volcano in Kamchatka extended up to 500 meters down the mountain, with molten material and ash being ejected to a height of 200 meters above the peak. Since the eruption of April 3rd, the volcano has repeatedly ejected ash plumes up to 6 km above sea level.
Klyuchevskaya Sopka (Klyuchevskoy volcano) is a fabulous strato-volcano on the East of Kamchatka, reaching to a height of 4,850 meters. Located some 360 km from Petropavlovsk-Kamchatsky, the volcano is one of the biggest in all Eurasia. The volcano is also one of the most active in the world, and is part of the natural Volcanoes of Kamchatka UNESCO World Heritage Site.
The Klyuchevskaya volcano’s first recorded eruption occurred in 1697, and since then it has been almost continuously active. First climbed in 1788 by Daniel_Gauss and two other mountaineers, the volcano has not been ascended since a 1931 eruption killed several climbers.
Source : Life ru.
Photo: RIA Novosti / Leo Garkavyi, Klyuchevskaya Sopka volcano in Kamchatka (Happylifeguide.ru)
Turrialba , Costa Rica :
Seismic swarm records over 80 quakes between the Turrialba and Irazu volcanoes last weekend
26 APRIL 2016. The Volcanological and Seismological Observatory of Costa Rica (OVSICORI) shows an image of the area where seismic activity on Saturday and Sunday was recorded. The tremors originated in an area classified by experts as a fragile area.
Analysis by OVSICORI indicate that the seismic swarm was caused by the internal activity that presents in the Turrialba volcano, especially by the movement of materials. The proximity of local faults generate earthquakes. Residents of communities near the volcano reported feeling some of the tremors.
The Turrialba volcano continues to eject gases and so far shows no change. The experts will not lower their vigilance.
Source : Teletica
Photo : Archives Ovsicori
Momotombo , Masaya , Nicaragua :
Volcanic activity Bulletin April 25, 2016
During the weekend, the Momotombo volcano has maintained a low micro-seismicity and low emissions.
The seismic amplitude in real time (RSAM) remains at low values, less than 70 units.
The possibility of new explosions occur with the production of gas, ash, and the expulsion of incandescent material is maintained at all times.
Volcanic tremor oscillations between high and low values on the volcano, with a low to moderate volcanic gas emissions have continued.
There remains a strong movement in the lava lake. The seismic amplitude in real time has moderate to high values, between 250 and 700 units RSAM.
As for seismic activity, 03 earthquakes occurred in the afternoon of yesterday, with magnitudes between M1.1 and M2,8 degrees, associated with the movement of magma in the caldera of the Masaya volcano .
Source : Ineter
Sabancaya , Peru :
LP type Earthquakes (associated with the passage of volcanic fluids) during this period remained at a similar average to the previous report (14 LP / day, Report No. 16-2016). LPs statistics show a 15.3 MJ peak power on April 24, which decreased thereafter. On the other hand, only one hybrid type event (associated with the ascent of magma material) at this stage of the analysis was recorded.
VPS type Earthquakes ( Volcano –Tectonic proximal , located less than 6 km from the crater), continued to decline, reaching an average of 4 VTPS / day in the period. Similarly, the scale of events for this period decreased, the maximum recorded was magnitude 2.6 ML (local magnitude). Events of Tremor type (TRE), during this period, have dropped dramatically, from an average of 29 TRE / day to 18 TRE / day, while energy remains low.
The location on the map for this period continues to show a predominance of volcano-tectonic events. These events were in the same seismic area than previous periods (14 km northeast of the volcano crater). In total, 140 VT event were located.
Also in this period, 8 VTPS events of magnitude between M2.2 and M2.6 were located. Among them stand out 2 main events, both with the same magnitude M 2.6, recorded on 24 and 25 April at 16:51 and 9:33 p.m. UTC , respectively, and at a shallow depth of 3.5 km.
VTDs events (Volcano–Tectonic Distal, located more than 6 km from the crater) comes off an M 3.3 event located in an area at 14 km to the North East, recorded on April 20 at 21:44 hours UTC and to a depth of 5 km.
• Frequency: Until April 19, intense clouds covered the area around the volcano, making it impossible to clearly distinguish emissions from fumaroles of the Sabancaya. On 20th, it was possible to appreciate the constant fumeroles, low density and a different coloration.
• Color: Whitish emissions (water vapor) and bluish gas (magmatic gases) were observed at a time. This recognition was made possible by the absence of cloud cover.
• Height: No more variation. Overall, emissions ranged between 400 meters and 1200 meters above the base of the crater.
Source : IGP Perou.
Photo : Benjamin Bernard.