October 29, 2015. EN. Rinjani , Turrialba, Sheveluch .

Home / blog georges Vitton / October 29, 2015. EN. Rinjani , Turrialba, Sheveluch .

October 29, 2015. EN. Rinjani , Turrialba, Sheveluch .

October 29, 2015.

 

 

Rinjani ,Lombok Island , Indonesia:

8.42°S, 116.47°E
Elevation 3726 m

PVMBG reported that on 25 October at 1004 an eruption at Rinjani generated an ash plume that rose 200 m above the Barujari crater, inside the caldera. Ash fell on the flanks, especially to the SW. The report noted that no seismic nor surficial precursory events were detected.

 

rinjani

 

The Alert Level was raised to 2 (on a scale of 1-4). Based on satellite observations, the Darwin VAAC reported that on 26 and 28 October ash plumes rose to altitudes of 3-4 km (10,000-13,000 ft) a.s.l. and drifted 45-75 km SW and WSW.

 

Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, aussi connu comme CVGHM), GVP.

 

 

Turrialba , Costa Rica :

10,025 ° N, 83,767 ° W

Elevation 3340 m

OVSICORI-UNA reported that a small ash eruption at Turrialba began at 1153 on 23 October. An explosion at 1710 on 24 October produced an ash plume that rose 800 m above the crater and drifted SSW. Multiple explosive events occurred during 24-25 October; poor weather conditions sometimes prevented views of the activity. On 25 October 10-minute-long explosive events began at 0730 and 0927 and generated ash plumes that rose 1.5 km and 200 m, respectively.

 

 turrialba

Plumes drifted NW and W. Pyroclastic flows from collapsing ash columns were generated both times. Volcanologists conducting fieldwork on 26 October observed morphological changes at the S edge of the W crater and nearby areas due to the recent activity. They noted fresh light-colored ash and tephra deposits on the steep wall of the active crater. Three small explosions generated ash, steam, and gas emissions. Tephra was deposited as far as 400 m away in various directions from the crater.

 

Source: Observatoire Vulcanologico y Sismologico de Costa Rica-Universidad Nacional (OVSICORI-UNA).GVP.

 

Sheveluch, Kamchatka :

 

Current Aviation Color Code: ORANGE
N 56 ° 38 min E 161 ° 18 min

Explosions and hot avalanches sent ash up to 4.5 km a.s.l. from 0551 UTC on October 29. Ash plume is extending on the height about 4 km a.s.l. to the east of the volcano.

sheveluch

Explosive-extrusive eruption of the volcano continues. Ash explosions up to 32,800 ft (10 km) a.s.l. could occur at any time. Ongoing activity could affect international and low-flying aircraft.
Distance of ash plume/cloud of the volcano: 9 mi (15 km)
Direction of drift of ash plume/cloud of the volcano: East.

Source : Kvert

Photo : Yu. Demyanchuk. IVS FEB RAS, KVERT

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