October 21 , 2016. EN. Ubinas , Turrialba , Ebeko , Kilauea .
October 21 , 2016.
Ubinas , Peru :
Volcanic and seismic monitoring:
LP-type events, which are related to the movement of fluids (water, steam and gas), in increase of activity at the beginning of this month, specifically between 04 and 05 October were maintained on average at a rate of 150 LP / day (86% increase compared to the previous period). The energy of the LP type events showed a peak of 14 MJ and currently remains at 2 MJ / day.
Hybrid type of seismicity related to the rise of magma, presented a sustained increase in their numbers and their power in the period from October 7 to 11, with the recording of up to 144 earthquakes on the same day . In this last week of analysis, the observed values of hybrid events remain with an downward trend.
The type of VT events, associated with rock fractures remained on a similar level to that seen in the previous period, 217 VT / day (previous period 210 VT / day). In terms of energy, on October 7, a peak of 54 MJ was generated and the average seismic energy of VT type events continues at a rate of 4.5 MJ / day. There is still pressure under the volcano.
Explosions: On October 3 were recorded, after 9 months, a volcanic explosions with ash emissions. The main event occurred at 0:21:34 UTC and generated an energy of 0.6 MJ. During the same day it was recorded nine hours and 36 minutes of Tremor associated with ash emissions.
Thermal anomalies and SO2: The Mirova system (www.mirovaweb.it) has not detected thermal anomalies for the period. In addition, the satellite system « EOS Aura » GSDM–NASA (http://so2.gsfc.nasa.gov/) did not record any major anomalies in the density values of SO2 gas in this period.
In this period (01/18 October), there were more explosions on the Ubinas volcano, which produced the expulsion of ash in the Northeast , East, Southeast and South West areas, with columns up to 2000 meters high. After these events, which took place between 02 and 03 October , the fumarolic activity of the volcano was characterized by bluish gas emissions that amounted 1,000 meters above the crater rim, approx.
Source : IGP
Photos : Archives IGP
Turrialba , Costa Rica :
Activity report of the Turrialba volcano. October 19, 2016.
Since yesterday, the emission of ash from the Turrialba volcano remained constant but passive. The eruption column reached 500 m above the top of the volcano and spreading to the northeast. The eruption was accompanied by a steady tremor signal with a small to moderate amplitude and short rest intervals.
At the moment, the visibility of Turrialba volcano through the webcam located above the Irazu volcano, is zero, however this morning, it could be considered that the energy of the eruption had decreased. After a brief period of operation, the camera
Web, on the top of Turrialba volcano was filled with ash and the lens was covered.
ashfall reports: Guacimo, Mercedes Jimenez, Parismina, Los Geranios.
The OVSICORI-A will send a report on the activity of the volcano if necessary.
Activity report of the Turrialba volcano. October 20, 2016.
The wind direction has changed today with an a northwesterly direction, again with an influence over the Central Valley. The Tremor remained spasmodically, but tended to decrease in amplitude in the last hours.
Source : Ovsicori
Photo : Alberto Alvarado
Ebeko, North Kuriles, Russia :
Aviation Color Code: Yellow
Volcano Location: N 50 ° 41 E 156 deg min 0 min
Altitude: 3791.68 ft (1156 m)
According to data from Observers from Severo-Kurilsk (Paramushir island, Northern Kuriles), the activity of the volcano continues: the gas-steam plumes containing ash rise up to 1.3-1.4 km a.s.l. and extend about 10 km to the northeast of the volcano.
Moderate steam-gas activity of the volcano continues. Ash explosions up to 16,400 ft (5 km) a.s.l. could occur at any time. The current activity could affect low-flying aircraft and Severo-Kurilsk airport.
Fumarolic activity of the volcano Ebeko, in August 2012.
The flat-topped summit of the central cone of Ebeko volcano, one of the most active in the Kuril Islands, occupies the northern end of Paramushir Island. Three summit craters located along a SSW-NNE line form Ebeko volcano proper, at the northern end of a complex of five volcanic cones. Blocky lava flows extend west from Ebeko and SE from the neighboring Nezametnyi cone. The eastern part of the southern crater contains strong solfataras and a large boiling spring.
Ash explosions on Ebeko volcano at 2:10 GMT on October 20, 2016, view from Severo-Kurilsk .
The central crater is filled by a lake about 20 m deep whose shores are lined with steaming solfataras; the northern crater lies across a narrow, low barrier from the central crater and contains a small, cold crescentic lake. Historical activity, recorded since the late-18th century, has been restricted to small-to-moderate explosive eruptions from the summit craters. Intense fumarolic activity occurs in the summit craters, on the outer flanks of the cone, and in lateral explosion craters.
Source : Kvert
Photo : Lyachovets S. ( 8/2012) , P. Stishko ( 20/10/2016.)
Kilauea , Hawai :
19°25’16 » N 155°17’13 » W,
Summit Elevation 4091 ft (1247 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE
Kilauea Volcano continues to erupt at its summit and East Rift Zone. Tiltmeters at Kilauea’s summit recorded inflationary tilt during the past day. The lava lake surface is 6 m (20 ft) below the floor of Halema’uma’u Crater this morning. The 61g lava flow continues to enter the sea at Kamokuna, posing no threat to nearby communities.
Two explosions in as many days were triggered by rocks falling into Kīlauea Volcano’s summit lava lake. The event shown above occurred around 12:26 p.m., HST, today (Thursday, October 20). The other explosion happened around 7:45 a.m. on Wednesday, October 19. Both events are reminders why the area around Halemaʻumaʻu Crater remains closed to the public.
Tiltmeters at Kilauea’s summit have been recording slow inflationary tilt since the inflationary phase of the current DI event started on Monday. There was an apparent dip on the tilt record at station UWE, which is shown on our website, yesterday from late morning to early evening; this was a result of work at the site intended to correct the problem causing spikes seen in the data since the weekend. Other than that dip, the tiltmeter is still tracking the longer term (hours and longer) tilt trends; the spikes can simply be ignored.
The lava lake rose in concert with the tilt, and was only 6 m (20 ft) below the rim of the Overlook Vent when measured this morning.
Seismicity is within normal, background rates with tremor fluctuations associated with lava lake spattering. Average daily summit sulfur dioxide emission rates ranged from 5,000 to 7,700 metric tons/day during the past week.
Pu’u ‘O’o Observations:
Webcam images over the past day show persistent glow at long-term sources within the crater. There were no significant changes in seismicity over the past 24 hours. The tiltmeter on Pu’u ‘O’o cone recorded slight inflationary tilt during the past day. The sulfur dioxide emission rate from all East Rift Zone vents was about 358 metric tons/day when last measured on October 14.
Lava Flow Observations:
The 61g lava flow, extending southeast from Pu’u ‘O’o on Kilauea’s south flank continues to enter the ocean at Kamokuna.
Source : HVO
Photos : HVO , Bruce Omori.