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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
 The summit craters of Popocatépetl on 27.01.2019 - photos Cenapred & al.

The summit craters of Popocatépetl on 27.01.2019 - photos Cenapred & al.

An overflight of the crater of Popocatépetl was carried out on January 27th by the Cenapred teams, with the support of the Federal Police helicopter.

The inner crater has a diameter of 300 meters and a depth of 150 meters, with no visible dome. A slight emission of gas is observed during the overflight.

During the last 24 hours, 61 exhalations, with emissions of steam, gas and a little ash were observed; the associated plumes are between 200 and 500 m. tall, scattered to the east. In addition, 29 minutes of harmonic tremor of low amplitude were recorded.

Source: Cenapred

Popocatépetl - photos of the flyover of 27.01.2019 - photos Cenapred & al.
Popocatépetl - photos of the flyover of 27.01.2019 - photos Cenapred & al.

Popocatépetl - photos of the flyover of 27.01.2019 - photos Cenapred & al.

At Merapi, Java, seismicity is characterized by 17 block avalanches, a blast earthquake, a low frequency, a hybrid and three distant tectonic earthquakes.

The distance traveled by the incandescent flows varies between 300 and 350 meters.

Source: BPPTKG

Merapi - summary of the activity of 27.01.2019 - Doc. BPPTKG

Merapi - summary of the activity of 27.01.2019 - Doc. BPPTKG

Merapi - Incandescent blocks flow and degassing of the dome 27.01.2019 / 18h06 - photo BPPTKG

Merapi - Incandescent blocks flow and degassing of the dome 27.01.2019 / 18h06 - photo BPPTKG

At Etna, the ash emissions of the Bocca Nuova were less intense, and allowed the reopening of Catania airport on the morning of January 27 ... before resuming during the day.

Sources: Marco Restivo / EtnaWalk

Etna - ash emissions by the Bocca Nuova on 27.01.2019 - Marco Restivo / EtnaWalk photos
Etna - ash emissions by the Bocca Nuova on 27.01.2019 - Marco Restivo / EtnaWalk photos

Etna - ash emissions by the Bocca Nuova on 27.01.2019 - Marco Restivo / EtnaWalk photos

Etna - 27.01.2019 / 12:28 - LAVE webcam

Etna - 27.01.2019 / 12:28 - LAVE webcam

Activity has not resumed in Kilauea for a few months, where the lava is no longer visible on crack 8 since September 4 (GVP).

Isolated areas continue to degas, but the vegetation returns to life in the rift zone affected by the last eruptive phase.

An overflight was made by Bruce Omori and Paradise helicopters on January 25, and allows, through his photos, to realize the changes made to the landscapes.

Kilauea East Rift Zone - black sand beaches at Kapoho; the Kapoho crater is visible at the top right - photo Bruce Omori 25.01.2019

Kilauea East Rift Zone - black sand beaches at Kapoho; the Kapoho crater is visible at the top right - photo Bruce Omori 25.01.2019

Kilauea East Rift Zone - Pohoiky bay and its new volcanic sand beach pierced by some water bodies trapped - photo Bruce Omori 25.01.2019

Kilauea East Rift Zone - Pohoiky bay and its new volcanic sand beach pierced by some water bodies trapped - photo Bruce Omori 25.01.2019

Black sand beaches adorn Kapoho's sea inlet, while small water reservoirs dot the shoreline at Pohoiki Bay.

Kilauea East Rift Zone - restoration of access to the Puna geothermal venture and degassing on the line of cracks / crevices - photo Bruce Omori 25.01.2019
Kilauea East Rift Zone - restoration of access to the Puna geothermal venture and degassing on the line of cracks / crevices - photo Bruce Omori 25.01.2019

Kilauea East Rift Zone - restoration of access to the Puna geothermal venture and degassing on the line of cracks / crevices - photo Bruce Omori 25.01.2019

Access to the geothermal venture of ​​Puna, cut by lava flows, has been restored. The cracks still emit gas and vapor plumes, aligned in the Leilani Estates area.

Kilauea East Rift Zone - The Pu'u O'o Crater - Photo Bruce Omori 25.01.2019

Kilauea East Rift Zone - The Pu'u O'o Crater - Photo Bruce Omori 25.01.2019

Drastic changes mark the craters Halema'uma'u and Pu'u O'o, following their emptying, and their collapses.

The crater of Pu'u O'o, 320 meters deep under the rim, emits plumes of gas.

That of Halema'uma'u has completely changed and expanded; 450 meters deep, its diameter is now almost 1,600 meters. It also has small areas of degassing.

 

Source: Bruce Omori / Extreme Exposure Fine Art Gallery / Paradise Helicopters & Dane DuPont / Hawaii tracker
 

Kilauea summit caldeira, with the crater of Halema'uma'u; in the background, Mauna Kea; in the foreground on the right, the crater Keanakakoi - BO - photo Bruce Omori 25.01.2019

Kilauea summit caldeira, with the crater of Halema'uma'u; in the background, Mauna Kea; in the foreground on the right, the crater Keanakakoi - BO - photo Bruce Omori 25.01.2019

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