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Volcanic activity worldwide 21 Jul 2016: Kliuchevskoi volcano, Pavlof, Sinabung, Nevados de Chillán...

Thu, 21 Jul 2016, 16:06
16:06 PM |
Map of today's active volcanoes
Map of today's active volcanoes
Etna's summit area as seen on 27 May 2016 (image: INGV Catania)
Etna's summit area as seen on 27 May 2016 (image: INGV Catania)
Glow from Klyuchevskoy's lava flow this evening
Glow from Klyuchevskoy's lava flow this evening
MODIS thermal signal from Alaid volcano (MIROVA)
MODIS thermal signal from Alaid volcano (MIROVA)
SO2 plume from Bagana volcano (NOAA)
SO2 plume from Bagana volcano (NOAA)
Explosion at Sinabung this morning (image: PVMBG)
Explosion at Sinabung this morning (image: PVMBG)
Lava flow map as of 19 July 2016 (HVO)
Lava flow map as of 19 July 2016 (HVO)
Seismic recording from Pavlof volcano PVV station (AVO / USGS)
Seismic recording from Pavlof volcano PVV station (AVO / USGS)
Weak ash emission from Nevados de Chillán this morning
Weak ash emission from Nevados de Chillán this morning
Ash emissions from Bristol island on 19 July 2016 (image: Terra/MODIS/NASA via South Sandwich Islands Volcano Monitoring Blog)
Ash emissions from Bristol island on 19 July 2016 (image: Terra/MODIS/NASA via South Sandwich Islands Volcano Monitoring Blog)
Etna (Sicily, Italy): The volcano remains calm at the surface but is restless. Its internal seismic activity continues to be higher than normal and SO2 gas emissions have increased a bit recently (to approx. 7,000 tons/day), which could indicate the influx of fresh magma.
Additionally, occasional small ash puffs, along with pulsating gas emissions, have been observed at the New SE crater since 10 July. These are likely signs of deep-seated explosive activity (degassing from the magma column inside the conduit). Volcanic tremor remains currently stable with no clear trend, but this can change quickly.
... [read more]

Kliuchevskoi (Kamchatka): The effusive-explosive eruption of the volcano continues with little changes. The lava flow remains active on the upper eastern flank while explosive activity in the summit crater and associated ash emissions have been more intermittent.

A collapse of parts of the lava flow generated a pyroclastic flow that descended the Apakhonchic ravine on 17 July.

Alaid (Northern Kuriles): The thermal signal from the volcano detected via satellite data has become much weaker since its peak in the first week of July, when volcanic activity could be identified as new lava flows inside the summit caldera.
This decrease suggests that the eruption (lava effusion) has either ended, or paused, or continues with greatly reduced strength only.

Bagana (Bougainville Island, Papua New Guinea): The volcano's activity seems to have increased a bit during the past days although it is currently unknown what is exactly going on (growing lava dome? effusion of lava flows?).
Overall heat emission (by presence of new lava in its summit area) has become stronger and smaller ash plumes drifting from the volcano to distances of 20-30 km have been reported more frequently by Darwin VAAC.

Sinabung (Sumatra, Indonesia): The volcano's activity has not changed significantly. Several smaller explosions with ash plumes about 1000-1500 m height occurred over the past days and this morning.

Kilauea (Hawai'i): No significant changes have occurred over the past days. The lava flow in the coastal flat remains active, but has not advanced in the past days. The flow front remains stalled at 850 m (0.5 miles) from the coast.
The active lava lake in Halema'uma'u crater is currently 25 m (82 ft) below the crater rim. Seismic activity and degassing are at normal levels.

Pavlof (Alaska Peninsula, USA): Seismic activity of the volcano has increased again during the past 48 hours. Satellite data show at least some small ash emissions have taken place although the Alaska Volcano Observatory does not speak of a new eruption taking place (such ash emissions could be related to collapses in the crater etc without new magma erupting).
The current Volcano Alert Level on the USGS scale is "Advisory" and the current Aviation Color Code is YELLOW.

Nevados de Chillán (Central Chile): The volcano has been very calm during the past weeks, but now began again to emit occasional small ash puffs and pulsating gas emissions.
In its latest bulletin, SERNAGEOMIN reported that no significant variations in monitoring parameters had been detected overall during the past 2 weeks, except a weak increase in SO2 output and the occurrence of (more than 700 in total) long-period earthquakes related to internal fluid movements.
... [read more]

Bristol Island (United Kingdom, South Sandwich Is): The eruption on the remote island continues. Recent satellite images show increased ash emissions as well as two dark stripes that likely are newly erupted lava flows to the west and northwest from Mount Sourabaya volcano.

Previous news

Tue, 19 Jul 2016, 21:00

Volcanic activity worldwide 19 Jul 2016: Fuego volcano, Kilauea

Map of today's active volcanoes
Kilauea (Hawai'i): The so-called "61G lava flow" southeast from Pu'u 'O'o extending into the coastal flat remains active, but most activity in the past days continued to enlarge and inflate the existing lava flow field. ... Read all
Mon, 18 Jul 2016, 21:00

Volcanic activity worldwide 18 Jul 2016: Suwanose-jima volcano

Map of today's active volcanoes
Suwanose-jima (Ryukyu Islands): A new eruptive phase has begun at the volcano. Near-constant ash emissions of several hundred meters height are currently visible from the volcano's On-take crater. ... Read all
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