June 19 , 2017. EN. Kilauea , Sheveluch , Reventador , Sinabung , Mauna Loa .

Home / blog georges Vitton / June 19 , 2017. EN. Kilauea , Sheveluch , Reventador , Sinabung , Mauna Loa .

June 19 , 2017. EN. Kilauea , Sheveluch , Reventador , Sinabung , Mauna Loa .

June 19 , 2017.

 

Kilauea , Hawaï :

19°25’16 » N 155°17’13 » W,
Summit Elevation 4091 ft (1247 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE

 

 

Activity Summary:
No significant change. Kīlauea Volcano continues to erupt at the summit and the Puʻuʻōʻō vent on its East Rift Zone. The episode 61g lava flow from Puʻuʻōʻō in the East Rift Zone is entering the ocean at Kamokuna. Surface flows are active above the pali. These lava flows pose no threat to nearby communities at this time. The lava lake surface is approximately 25 m (82 ft.) below the floor of Halemaʻumaʻu. Low rates of ground deformation and seismicity continue across the volcano.

Summit Observations:
Tiltmeters at Kīlauea’s summit are recording inflationary tilt. The lava lake surface is approximately 25 m (82 ft.) below the rim of the Overlook Vent, based on webcam images. Webcam views of the lava lake can be found at this webpage: http://hvo.wr.usgs.gov/cams/region_kism.php. Seismicity is within normal, background rates with tremor fluctuations associated with lava lake spattering. Summit sulfur dioxide emission rates remain high.

 

 

L’image contient peut-être : ciel, plein air, nature et eau

Puʻuʻōʻō Observations:
Webcam images over the past 24 hours show persistent glow at long-term sources within the crater and from a small lava pond on the west side of the crater. There were no significant changes in seismicity over the past 24 hours. The tiltmeter turned around and began recording inflationary tilt trend as of yesterday mid-morning. The sulfur dioxide emission rate from the East Rift Zone vents has been steady over the past several months and remains significantly lower than the summit emission rate.

L’image contient peut-être : ciel, montagne, nuage, océan, plein air et nature

Lava Flow Observations:
The episode 61g flow is still active and entering the ocean at Kamokuna. The new lava delta is approximately 3.2 acres in size, extending about 100 m (328 ft.) out from the sea cliff. At Puʻuʻōʻō, flows continue on the upper portion of the flow field. Field crews reported no active breakouts on the coastal plain. None of these flows poses any threat to nearby communities at this time.

Source : HVO

Photos : Bruce Omori , David Ford .

 

Sheveluch , Kamchatka :

56.64 N, 161.32 E;
Elevation 10768 ft (3283 m),
the dome elevation ~8200 ft (2500 m)
Aviation Color Code is ORANGE

Explosive-extrusive eruption of the volcano continues. Ash explosions up to 32,800-49,200 ft (10-15 km) a.s.l. could occur at any time. Ongoing activity could affect international and low-flying aircraft.

 

A growth of the lava dome continues (a viscous lava flow reveal in the northern its part), strong fumarole activity, ash explosions, hot avalanches and an incandescence of the dome blocks and hot avalanches accompany this process. According to video and satellite data by KVERT, the power explosive eruption began at 1625 UTC on 14 June: explosions sent ash up to 12 km a.s.l., ash clouds extended for about 1000 km to the north-east and south-west from the volcano on 14-16 June. Ash falls were noted at Klyuchi, Maiskoe, Kozyrevsk and Atlasovo Villages. On 10-13 June, explosions sent ash up to 8 km a.s.l. and ash clouds drifted for about 1500 km to the south-east and north-west from the volcano.

A notice of volcanic observation for aviation was issued on 19/06/2017, for an ash cloud extending 500 km east-south-east of the volcano.

The volcano Sheveluch  today shows a very high thermal signal of 1907 MW at MIROVA. The corresponding satellite image shows that the thermal anomaly occupies almost half of the Ignimbrit field in the southwest of the volcano. The assumption suggests that there was a strong collapse in which large pyroclastic flows were generated. The VAAC Tokyo registered 2 ash clouds this afternoon, which rose over 12 km high.

Source : Kvert , vulkane.net ( Marc Szeglat ).

Photos : Voznikov A.V. , Yu. Demyanchuk, IVS FEB RAS, KVERT.

 

Reventador , Ecuador :

Reventador Volcano Activity Bulletin, Sunday, June 18, 2017

SUMMARY OF VOLCAN ACTIVITY:
The volcano remains with a high and continuous activity. In the morning, an emission of gas and steam with an average ash content at a height of 600 meters was observed.

 

TECHNICAL APPENDIX AND OBSERVATIONS:
Seismicity:
(TL) today, 4 episodes of tremor harmonic (TRA), 1 episode of tremor of emission (ERT), 30 events long period (LP) and 32 explosions (EXP) were observed. .
Observations, emissions and ash:
During the night, it was possible to see a glimmer at the top. At dawn the volcano darkened and in the morning it was half open, and there was an emission of gas and vapor with an average ash content to the west with a height of 600 meters above the crater. Since then, the sector is clear.
Rains and lahars:
There were no rains in the area.

GENERAL INFORMATIONS:
The present report on a daily basis will be published at 12:00 (TL). In the event of an increase or a change in the behavior of the volcano, it will be immediately published a special report.

 

Source : IGEPN.

 

Sinabung , Indonesia :

Volcano Observatory Notice for Aviation (VONA):

Last Issued: 2017 , June 19
Current Aviation Color Code: ORANGE

L’image contient peut-être : feu

 Volcanic Activity Summary:
Eruption with ash clouds at 05:47 UTC (12:47 local time). The eruption lasted for 167 seconds.
Volcanic Cloud Height:
Best estimate of ash-cloud top is around 9472 FT (2960 M) above sea level, may be higher than what can be observed clearly. Source of height data: ground observer.
Other Volcanic Cloud Information:
Ash cloud is moving to East – Southeast Ash cloud is moving to East – Southeast
Remarks:
Seismic activity is characterized by the Deep Volcanic Earthquake, Low Frequency Earthquake, and Hybrid Earthquake. Rock avalanche (Incandescent lava) is not identified

Source : VSI

Photo : Endro Lewa.

 

Mauna Loa , Hawaï :

19°28’30 » N 155°36’29 » W,
Summit Elevation 13681 ft (4170 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color Code: YELLOW

Activity Summary:
Mauna Loa Volcano is not erupting. Rates of deformation and seismicity have not changed significantly in the past week, and persist above long-term background levels.

 

Observations:
During the past week, only a few small-magnitude earthquakes occurred beneath the volcano, primarily in the south caldera and upper Southwest Rift at depths less than 5 km (3 miles). An additional, small number of earthquakes also occurred on the west flank of the volcano at depths ranging from 0-13 km (0-8 miles).

Global Positioning System (GPS) measurements continue to show deformation related to inflation of a magma reservoir beneath the summit and upper Southwest Rift Zone.

No significant changes in volcanic gas emissions, sulfur dioxide or carbon dioxide were measured.

 

Source : HVO

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