Overblog
Editer l'article Suivre ce blog Administration + Créer mon blog

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, #Sismologia
Nevado del Ruiz - ash emission on 23.06.2022 / 05:43 - Doc.SGC

Nevado del Ruiz - ash emission on 23.06.2022 / 05:43 - Doc.SGC

At Nevado del Ruiz, the recording of seismic signals of low-energy fluids continues, some of them were associated with ash emissions observed through the cameras installed in the volcano area. The dispersion of the column was governed by the direction of the wind, which presented a predominant tendency towards the northwest of the volcano, causing ash fall in the area of ​​influence of the volcano and in the city of Manizales.
The phenomenon observed is a recurrent pulsatile phenomenon in the activity of the volcano.

The activity level of the Nevado del Ruiz volcano continues in yellow or (III): Changes in the behavior of volcanic activity.

 

Source: S.G.Columbiano

Chikurachki - explosive eruption and plume at 3,000 m. asl. 23.06.2022 from 7:30 p.m. - photo D. Bobyrev IVS FEB RAS

Chikurachki - explosive eruption and plume at 3,000 m. asl. 23.06.2022 from 7:30 p.m. - photo D. Bobyrev IVS FEB RAS

Chikurachki- Volcanic ash advisory at 24.06.2022 / 0600Z - Doc. VAAC Tokyo

Chikurachki- Volcanic ash advisory at 24.06.2022 / 0600Z - Doc. VAAC Tokyo

The activity of the Chikurachki volcano, located in the southwestern part of Paramushir Island on the Karpinsky Ridge, continues.

KVERT mentions a plume of gas and ash at 3,000 M. asl. June 23 from 7:30 p.m. UTC.

Satellite data from Himawari-8 showed the large 14 x 30 km ash cloud moved 25 km southeast of the volcano.

Ash explosions up to 6 km (19,700 ft) above sea level could occur at any time. Ongoing activity could affect low-flying aircraft.
Aviation color code changed from green to orange.

 

Source: KVERT

Ebeko - phreatic eruption of 12.06.2022 - photo D. Ermolaev IVS FEB RAS

Ebeko - phreatic eruption of 12.06.2022 - photo D. Ermolaev IVS FEB RAS

Moderate activity of the Ebeko volcano continues. An ash plume at about 3.5 km a.s.l. was observed on June 24, 2022, extending to the southeast of the volcano.

Moderate activity of the volcano continues. Ash explosions up to 6 km above sea level could occur at any time. Ongoing activity could affect low-flying aircraft and Severo-Kurilsk airport.

Aviation color code changed from yellow to orange

 

Source: KVERT

Langjökull - location and magnitude of earthquakes on 24.06.2022 / 07:05 - Doc. IMO
Langjökull - location and magnitude of earthquakes on 24.06.2022 / 07:05 - Doc. IMO
Langjökull - location and magnitude of earthquakes on 24.06.2022 / 07:05 - Doc. IMO

Langjökull - location and magnitude of earthquakes on 24.06.2022 / 07:05 - Doc. IMO

A magnitude 4.6 earthquake occurred in Langjökull at 10:12 a.m. on 23.06.2022, about 11 kilometers north of Hagajökull, according to the Icelandic Meteorological Office.

A number of reports have been received that the earthquake was felt across western Iceland, north of Húnavatnshreppur, in the capital region and in the very south at Rangárþing eystra.
According to Bryndís Ýrar Gísladóttir, a nature conservation specialist, there was no seismic activity in the area before the quake. The number of aftershocks was thus measured, the largest being of magnitude 3.5 according to the initial measurements.
The last magnitude 4 earthquake in the western part of Langjökull occurred on December 10, 2015.

 

Source: RUV.is via Óróapúls - Volcanism in Iceland

Distribution of EU3f from proximal to ultradistal areas mimicking the dispersal of volcanic clouds that occurred during the eruption of Vesuvius in 79 CE. The 5 cm and 2 cm isopaches and the trace zone (T) are indicated - Doc. referenced in sources

Distribution of EU3f from proximal to ultradistal areas mimicking the dispersal of volcanic clouds that occurred during the eruption of Vesuvius in 79 CE. The 5 cm and 2 cm isopaches and the trace zone (T) are indicated - Doc. referenced in sources

The ancient mysteries of Vesuvius' eruption in AD 79 revealed.
A new multidisciplinary study has made it possible to identify the exact date of the event, and to follow the effects of the eruption up to thousands of kilometers, through a multidisciplinary approach, exploiting the integration of historical, stratigraphic , sedimentological, petrological, geophysical, paleoclimatic and modeling dedicated to this famous and devastating natural event.

A lesson from the past, especially from the well-studied eruption of Vesuvius in 79 CE, will be useful for better synchronization of processes and products in future developments. Finally, various aspects of volcanic hazard assessment of Plinian eruptions are highlighted from the perspective of tephra distribution and modeling, as these large natural phenomena may have a greater impact than previously thought. , also on other active volcanoes.


The study was recently published in the prestigious journal "Earth-Science Reviews", edited by researchers from the National Institute of Geophysics and Volcanology (INGV) in collaboration with colleagues from IGAG-CNR, (CIRSEC ), the S. Terra of the University of Pisa, the LMV of Clermont-Ferrand in France and the EPS (Heriot-Watt University of Edinburgh - UK). The research was carried out as part of the INGV-funded “Dynamic Planet” research project.

 

Source: The 79 CE eruption of Vesuvius: A lesson from the past and the need of a multidisciplinary approach for developments in volcanology – to read on this link /Science Direct.

Commenter cet article

Archives

Articles récents

Hébergé par Overblog