November 25 , 2017. EN. Popocatépetl , Kilauea , Sheveluch , Ibu .

Home / blog georges Vitton / November 25 , 2017. EN. Popocatépetl , Kilauea , Sheveluch , Ibu .

November 25 , 2017. EN. Popocatépetl , Kilauea , Sheveluch , Ibu .

November 25 ,  2017.

 

Popocatépetl , Mexico :

Popocatépetl Volcano Activity Bulletin, 24 November, 11:00 am (24 November, 17:00 GMT).
In the last 24 hours, the monitoring systems of the Popocatepetl volcano recorded 482 low intensity exhalations accompanied by steam and gas. In addition, two explosions were recorded yesterday at 14:13 h and 21:05 h. After the explosion of 14:13, began a train of exhalations lasting 90 minutes. Both events caused ashfall in the municipalities of Huaquechula, Tepeojuma, Izucar Atlixco and Matamoros in the state of Puebla.
In addition, 5 volcano-tectonic events were recorded in this period, with a preliminary magnitude of between M 2.5 and M 1.5. There was also 15 minutes of harmonic tremor of low amplitude.

Update of November 24, 5:40 pm (November 24, 23:40 GMT).
At 17:11, a continuous emission of water vapor, gas and ash began to be recorded, with a column height of approximately 3,500 m, dispersing in a south-south-east direction. At the time of this update, the broadcast continues. We must expect ashfall in the localities of this area. This type of activity is envisioned in the Phase 2 Yellow Volcanic Warning Level scenarios.

Updated November 24, 7:00 pm (November 25, 01:00 GMT).
The episode that began at 5:11 pm has decreased in intensity, with a tendency to return to previous activity levels. Eruptive columns of gas and ash up to 4 km in height were present. Ash falls are expected on the populations of the South-South-East sector. At the time of this update, ash falls were reported in San Pedro Benito Juárez and Atlixco in the state of Puebla.

Update of November 24, 23:35 (November 25, 05:35 GMT).
At 22:52 there was an explosion that released incandescent fragments that were deposited up to 1 km from the edge of the crater, on the slopes of the volcano. It also generated a column of ash that exceeded 2.5 km in height with the South-Southeast direction. The volcanic warning level of Popocatepetl remains in yellow phase 2.

CENAPRED asked not to approach the volcano and in particular the crater, because of the risk of projectiles falling, and in case of heavy rain to stay away from the bottoms of the ravines because of the danger of landslides and floods. mud.

The volcanic alert level of the Popocatepetl volcano is located at Amarillo Phase 2.

Source : Cenapred.
Photos : Teresa Lopez Munoz , Ceci Carrillo.

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:
No significant changes in the summit or East Rift Zone eruptions at Kīlauea Volcano are noted. Surface lava flow activity continues in the East Rift Zone on the upper portion of the episode 61g flow field, on the pali, and in scattered areas on the coastal plain. These lava flows currently pose no threat to nearby communities. The surface of the lava lake at Halemaʻumaʻu was measured at 31m (102ft) below the adjacent Halemaʻumaʻu floor this morning. Low rates of ground surface deformation and seismicity continue across the volcano.

A view of Pu‘u ‘Ō‘ō Crater looking west, with the main crater in the center of the photo. In the background the west pit – which has an active lava pond inside – can be seen adjacent to the larger crater. The northeast spillway vent is in the lower right. A lava stream was previously visible inside this pit, but no lava could be seen on today’s overflight.

Summit Observations:
Kīlauea summit lava lake activity continues. This morning the depth to the lake surface was measured at 31m (102ft) below the adjacent Halemaʻumaʻu floor. Summit tiltmeters are registering a small inflationary tilt that began early yesterday morning. Summit sulfur dioxide emission rates remain high. Low levels of seismic activity are noted.

Kīlauea Volcano’s summit lava lake activity over the past few days has been typical, with intermittent sites of spattering and migration of the crust from north to south (top to bottom of image). This view of the lava lake was captured on the evening of Saturday, November 18.

Puʻu ʻŌʻō Observations:
No significant changes are noted at Puʻu ʻŌʻō. Webcam images over the past 24 hours show persistent glow at long-term sources within the crater and from a small lava pond on the west side of the crater. Low rates of seismic activity and ground surface deformations are noted. The sulfur dioxide emission rate from the East Rift Zone vents has been steady over the past several months and remains significantly lower than the summit emission rate.

This thermal image shows the lack of active breakouts or lava streams on the Kamokuna lava delta, which has been inactive for several days. Farther upslope, scattered breakouts are active on the coastal plain and pali.

Lava Flow Observations:
The episode 61g flow is still active. Web camera images show surface lava flow activity persisting on the upper portion of the flow field, on the pali, and in scattered areas along the coastal plain. These flows pose no threat to nearby communities at this time. In the webcam images looking toward the Kamokuna delta, no ocean-entry plume is evident this morning.

Source : HVO


Sheveluch , Kamchatka :

56.64 N, 161.32 E;
Elevation 10768 ft (3283 m), the dome elevation ~8200 ft (2500 m)
Aviation Colour Code is ORANGE

Explosive-extrusive eruption of the volcano continues. Ash explosions up to 32,800-49,200 ft (10-15 km) a.s.l. could occur at any time. Ongoing activity could affect international and low-flying aircraft.

A growth of the lava dome continues (a viscous lava flow reveal in the northern its part), strong fumarole activity, ash explosions, hot avalanches and an incandescence of the dome blocks and hot avalanches accompany this process. According to satellite data by KVERT, a thermal anomaly over the volcano was noting on 17-18, 20 and 22 November; the volcano was obscured by clouds in the other days of week.

Source : Kvert
Photo : Yu Demyanchuck , IVS FEB RAS , KVERT

Ibu , Indonesia :

Level of activity at Level 2 (WASPADA). G. Ibu (1340 m above sea level) is erupting continuously. Visually, since yesterday until this morning, the volcano was covered with fog. The wind was blowing eastward.

Thanks to the registration of the seismographs on November 24, 2017, it was recorded:
118 earthquake eruption.
100 earthquakes emission.
30 harmonic tremor events.

Recommendation:
Communities around G. Ibu and visitors / tourists should not move, climb or approach within 2 km of the crater, with a 3.5 km sectoral expansion towards the opening north of the active crater.
VONA: The last recorded color code ORANGE, was published on August 28, 2017 at 06:12 WIT, related eruption with a height of ash of 1725 m above sea level or 400 m above the peak, column of ash tilted to the North.

Source : VSI
Photo : S Chermette

Recommended Posts

Leave a Comment

Nous contacter

Nous ne sommes pas disponibles pour le moment. Mais vous pouvez nous envoyer un email a l'aide du formulaire ci-dessous.

Not readable? Change text. captcha txt

Start typing and press Enter to search