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Earth of fire

Actualité volcanique, Article de fond sur étude de volcan, tectonique, récits et photos de voyage

Publié le par Bernard Duyck
Publié dans : #Actualités volcaniques
Pavlov - the plume and ash cloud March 28, 2016 / 11:14 - photo Almandmoss, Nahshon / via AVO
Pavlov - the plume and ash cloud March 28, 2016 / 11:14 - photo Almandmoss, Nahshon / via AVO

Pavlov - the plume and ash cloud March 28, 2016 / 11:14 - photo Almandmoss, Nahshon / via AVO

The eruption of Pavlof, started on March 27, continued until the afternoon of 28 March, with emanation of a sustained ash plume, traveled by lightning.


According to satellite data, ash emissions were ongoing at 24h30 loc / UTC 8:30 p.m., with a plume extending over 650 km. to the NE on the interior of Alaska. The tremor has decreased but remained above baseline levels. The high surface temperatures allow suggest the presence of lava flows. Mudslides are possible on the flanks of the volcano.


Lava fountains were observed during the night by sailors, pilots and residents of Cold Bay, 60 km southwest of Pavlof volcano.

Pavlof, lava fountain 03.28.2016 / 03h local - Photo courtesy Royce Snapp, taken from Cold Bay, with a 500 mm lens. / AVO

Pavlof, lava fountain 03.28.2016 / 03h local - Photo courtesy Royce Snapp, taken from Cold Bay, with a 500 mm lens. / AVO

Pavlof - RSAM between 27 and 29.03.2016 - Doc. AVO - one click  to enlargePavlof - RSAM between 27 and 29.03.2016 - Doc. AVO - one click  to enlarge

Pavlof - RSAM between 27 and 29.03.2016 - Doc. AVO - one click to enlarge

Near real-time NASANPP OMPS SO2 data show PavlofVolcano plume over interior Alaska - vis Simon Carn

Near real-time NASANPP OMPS SO2 data show PavlofVolcano plume over interior Alaska - vis Simon Carn

Twenty local flights of Alaska Airlines toward Bethel, Kotzebue, Nome, Barrow and Deadhorse were canceled; the flights to Anchorage and Fairbanks were maintained ... everything remains under the supervision of specialized instances.
 

.The Ashes of Pavlof  to Nelson lagoon - photo Katie Johnson / KTUU

.The Ashes of Pavlof to Nelson lagoon - photo Katie Johnson / KTUU

Pavlof - the ash cloud seen from the deck of Amy M Foster in Sand Point 27.03.2016 / AVO

Pavlof - the ash cloud seen from the deck of Amy M Foster in Sand Point 27.03.2016 / AVO

Pavlof - little air disturbance except the NW quarter of the map / 03/28/2016 - doc Flightradar 24

Pavlof - little air disturbance except the NW quarter of the map / 03/28/2016 - doc Flightradar 24

The Pavlof aviation alert level , on red alert since March 27, was lowered to 28 March 18h to orange, following the significant decline of the eruption, and the absence of ash emissions.

Seismicity and infrasound declined despite a tremor still above baseline levels.
The ash cloud continues to drift from the south of the Bering Sea toward the interior Alaska.

Ash advisory for Pavlof volcano - 29.03.2016 - doc. VAAC Anchorage

Ash advisory for Pavlof volcano - 29.03.2016 - doc. VAAC Anchorage

Sources:


- AVO - Alaska Volcano Observatory
- VAAC Anchorage
- NOAA
- KTUU. com

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