August 28 , 2015. English . Piton de la Fournaise , Kilauea , Klyuchevskoy.

Home / blog georges Vitton / August 28 , 2015. English . Piton de la Fournaise , Kilauea , Klyuchevskoy.

August 28 , 2015. English . Piton de la Fournaise , Kilauea , Klyuchevskoy.

August 28 , 2015.



Piton de la Fournaise , La Réunion :

Activity Bulletin Thursday, August 27, 2015 at 19:00 (Local Time)

The eruption that began on August 24, 2015 at 18:50 continues.
The intensity of seismic activity is globally stable since 24 hours.



Since yesterday evening we observe slight fluctuations in the activity that result in variations in the height of the fountains and the plume.
From the only still active eruptive mouth, escapes a unique flow arm, which is divided into two at the Cornu crater. The arm that stretches to the south is short enough when that the one who turns east extends to the casting front. The images do not allow to say whether this front that yesterday morning (7:00) was located 3.5 Km from the main mouth is still powered.

Two teams of OVPF could work today on the volcano, which allowed:
Precisely locate the edge of the flow (which is fixed and is no longer supplied to the current time),
– Check the measuring station located near the crater Rivals was safely out of range of flows and spillovers of the fountains products
fly over whole area to acquire thermal and optical imagine to be used for mapping,
Take samples of lava specimens (which will be analyzed shortly).




Activity Bulletin Friday, August 28, 2015 at 09:00 (Local Time)

The eruption that began on August 24, 2015 at 18:50 continues.
No visibility on the eruption was possible that night due to bad weather on the site.
At daybreak, the clouds dissipate on the volcano. Our network of cameras has allowed to observe the presence of a small plume (gas) that rises vertically for 400 m then left about heading south.


From 9:00 p.m., registered seismic energy closer to the source slightly increased. This increase is not necessarily significant in the long term, and is linked to slight fluctuations observed in the dynamism of the phenomenon.
A nearby site reconnaissance and a measurement campaign will be carried out that day if the weather continues.

Variations in eruptive tremor since the beginning of the eruption




Source : OVPF

Photos : Richard Bouet.



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

Activity Summary:
The lava lake at Kilauea’s summit is still active. Summit tiltmeters recorded a brief deflationary tilt signal overnight. The East Rift Zone lava flow northeast of Pu’u ‘O’o is also active, and all breakouts remain within 8 km (5 mi) of the vent. A large breakout occurred from the lava tube on the north side of Pu’u ‘O’o overnight, and lava erupted in the bottom of Pu’u ‘O’o crater. None of the lava flows currently pose a threat to communities but are being monitored closely. Low levels of seismic activity continue across the volcano.



Summit Observations:
Kilauea’s summit inflated through the day yesterday and then switched to deflation overnight. Deflation stopped early this morning, and tilt has been flat since. Seismic tremor continues with episodic bursts associated with spattering on the surface of the summit lava lake, which remains active. This morning, the depth to the surface of the lava lake is about 58 m (190 ft) below the floor of Halema’uma’u. Seismicity within the volcano remains at a low level. An earthquake with a preliminary magnitude of 3.8 occurred at 4:39 AM this morning beneath Kilauea’s south flank. Summit sulfur dioxide emission rates ranged from 2,000 to 2,200 metric tons/day for the week ending August 18.

Pu’u ‘O’o Observations:
There was no change at Pu’u ‘O’o through the day yesterday, but early this morning lava began to erupt from a vent on the northeast side of the crater floor. The flow was still slowly spreading within the crater this morning. Seismic activity remains low. The sulfur dioxide emission rate from all East Rift Zone vents was about 390 tonnes/day when measurements were last possible on August 13, 2015.



A significant breakout occurred around 1 am this morning on the northern flank of Pu’u ‘O’o, and it has advanced to the approximately 1/3 of a mile to the northwest as it spreads out on the flow field. It seems to be flowing over the general path of the tube that transports lava to the distal tip, so it’s possible that an obstruction has occurred within it, forcing lava to the surface.

June 27th Lava Flow Observations:
Webcam views overnight show continued activity on the flow field northeast of Pu’u ‘O’o. These flows are active within 8 km (5 mi) of Pu’u ‘O’o, and some are marked by smoke plumes where lava is creeping into the forest. At 1 AM, a large breakout occurred on the northeast flank of Pu’u ‘O’o from the lava tube supplying the distant flows. This breakout was still feeding a channelized flow to the north this morning. It is too soon to tell how important this breakout is or if it will affect the vigor of the distant flows to the northeast.


Source : HVO

Photos : Bruce OMORI , HVO.


Klyuchevskoy, Kamchatka :

56.06 N, 160.64 E;
Elevation 15580 ft (4750 m)
Aviation Color Code is YELLOW

According to videodata by KVERT, an incandescence of the volcano crater began from 1544 UTC on August 27, 2015. This means the Strombolian explosive eruption of Klyuchevskoy volcano began. Strong gas-steam activity of the volcano was observed on August 26-27, before the explosive eruption. The volcano obscured by clouds at present.



Explosive eruption of Klyuchevskoy volcano began and continues. Ash explosions up to 19,700 ft (6.0 km) a.s.l. are possible. The activity of the volcano could affect low-flying aircraft.


Source : O Girina / KVERT


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