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Earth of fire

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

Publié le par Bernard Duyck
Publié dans : #volcanic activity
 Ulawun - degassing in 2009 - photo archives GVP

Ulawun - degassing in 2009 - photo archives GVP

The activity of Ulawun, located in the Bismarck arch in Papua New Guinea is increasing.

Dispatches of volcanic ash were issued by VAAC Darwin on June 25 and 26, and the aviation code changed to red.

IDY41305

VA ADVISORY
DTG: 20190626 / 0700Z
VAAC: DARWIN
VOLCANO: ULAWUN 252120
PSN: S0503 E15120
AREA: PAPUA NEW GUINEA
SUMMIT ELEV: 2334M
ADVISORY NR: 2019/10
SOURCE INFO: HIMAWARI-8, RVO
AVIATION COLOR CODE: RED
ERUPTION DETAILS: VA TO FL600 MOV S / SE. VA TO FL440 MOV
S. VA TO FL280 EXT W.

The Ulawun stratovolcano saw its eruptions become more important from 1970, with lava flows and pyroclastic flows, which modified the summit crater. Its last events date back to 2018. (GVP)

Vidéo : https://twitter.com/i/status/1143795457627267072

Sources: VAAC Darwin and Global Volcanism Program

Ulawun - a big plume on  26.06.2019 / 07h 00 UTC - Doc. Aires EO / Twitter

Ulawun - a big plume on 26.06.2019 / 07h 00 UTC - Doc. Aires EO / Twitter

Ulawun - volcanic ash advisory 26-27.06.2019 - Doc. VAAC Darwin

Ulawun - volcanic ash advisory 26-27.06.2019 - Doc. VAAC Darwin

Poas - the crater lake level has been maintained from 16 to 23 June 2019 - RSN webcam pictures

Poas - the crater lake level has been maintained from 16 to 23 June 2019 - RSN webcam pictures

The RSN reports, in its weekly report, that a small phreatic eruption took place on 18 June in Poas, reported by the National Park guards.

Water accumulation continues in the main crater due to rainfall; however, in the past few days, the level is falling by evaporation.

An exit of gas is observed at the level of the mouth A, although it is practically completely covered by the waters ... in case of phreatic eruption, splashes of water and sediments could occur.

 

Source: Red Sismologica Nacional

Roturoa - small hydrothermal eruption - photo Brad Scott / Twitter

Roturoa - small hydrothermal eruption - photo Brad Scott / Twitter

A small hydrothermal eruption occurred in Rotorua / New Zealand, reported by Brad Scott Volcanology.

The site has experienced several heating episodes over the past two decades. The cliff along the east side is warming up, killing trees and shrubs. A pool of mud bursts every 20 to 50 seconds.

 

Source: Brad Scott via Twitter

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