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Volcanic activity worldwide 25 Jul 2013: Pacaya, Stromboli, Santa María / Santiaguito, Fuego, Popoc...

Thursday Jul 25, 2013 15:07 PM |

This morning's seismic signal from Pacaya (PCG station, INSIVUMEH)
This morning's seismic signal from Pacaya (PCG station, INSIVUMEH)
This morning's seismic recording at Telica (TELN station, INETER)
This morning's seismic recording at Telica (TELN station, INETER)
This morning's seismic signal from Tungurahua (RETU station, IGPEN)
This morning's seismic signal from Tungurahua (RETU station, IGPEN)
Current seismic recording from Sabancaya volcano (BHZ station, IGP)
Current seismic recording from Sabancaya volcano (BHZ station, IGP)
MODIS hot spot data (past 7 days) for Heard volcano (ModVolc, Univ. Hawaii)
MODIS hot spot data (past 7 days) for Heard volcano (ModVolc, Univ. Hawaii)
Stromboli (Eolian Islands, Italy): Activity has been at relatively low to moderate levels recently. Explosions of small to medium size occur regularly from the "usual" (mainly the eastern and western) vents.

Tolbachik (Kamchatka): KVERT reports no changes in the ongoing mainly effusive eruption; tremor has remained stable (3.3 mcm/s).
No significant changes were reported for either of the other currently erupting / restless Kamchatkan volcanoes:
... [read more]

Chirinkotan (Northern Kuriles): A thermal hot spot and steam plume remain visible on satellite images (when there is no cloud cover), indicating that some activity continues at the remote volcano.

Sakurajima (Kyushu, Japan): The IAVECI 2013 conference over, activity has dropped a bit, it seems. The volcano still has a few vulcanian explosions per day, but smaller in size, and phases of near-continuous ash emissions have become a bit weaker and shorter when observed last night.

Lokon-Empung (North Sulawesi, Indonesia): An explosion occurred Monday (22 July) morning at 05:06 local time, producing an ash plume of about 1200 m height.

Popocatépetl (Central Mexico): Emissions have been up to 2 per hour on average, but remained very small. A volcano-tectonic magnitude 2.3 quake occurred at 00:47 (local time) yesterday.

Santa María / Santiaguito (Guatemala): The lava dome has been very calm during the past day. No explosions and no movement at the previously active lava flow (on the southern slope) were observed.

Pacaya (Guatemala): Seismic and surface activity have increased during the past days, characterized by the appearance of continuous tremor and more frequent strombolian explosions, the latest special bulletin of INSIVUMEH notes.
This suggests a batch of fresh magma is currently rising. The Guatemalan scientists think that it is likely that strombolian activity will increase and perhaps a lava flow will appear on the flanks of the volcano in the coming days.
... [read more]

Fuego (Guatemala): Activity has remained low. INSIVUMEH reports only few and weak explosions (producing ash plumes up to 400 m height) and the active lava flow decreased to 50 m length.

Telica (Nicaragua): Seismic activity has decreased a bit, although small earthquakes are still frequent.

Galeras (Colombia): A magnitude 3.2 earthquake occurred under the volcano yesterday morning. The quake was felt by some nearby residents.

Reventador (Ecuador): Activity remains at high levels, characterized by small explosions and the likely effusion of lava flows. Unfortunately, near-constant cloud cover makes direct observations difficult.

Tungurahua (Ecuador): An increase in activity has occurred since yesterday. For 24 July, IGPEN reports an eruption column of steam and ash reaching 5 km above the crater drifting into westerly directions. During the past night, a further rise in activity has likely occurred, as the increasing tremor signal suggests.
Weak to moderate explosion sounds could be heard overnight and ash fall was reported from El Manzano, Choglontus, Puela, Cahuaji, and in the sectors of Cevallos, Quero and Mocha.

Sabancaya (Peru): Seismic activity has picked up. A number of earthquakes in the magnitude 2-3 range have appeared recently.

Heard (Australia, Southern Indian Ocean): A single hot spot is again visible at the summit crater. It is not known what activity exactly occurs there, but it could be that there is a small lava lake or strombolian-type activity from the crater at Dawson Peak.
Vorig nieuws
Strombolian eruption from Raung on 21 July (photo Agus Kurniawan)
Wednesday, Jul 24, 2013
Raung (East Java): (24 Jul) Mild strombolian activity is taking place from the intra-crater cone, a recent photo shows. ... [meer...]
MODIS hot spot data (past 7 days) for Tolbachik volcano (ModVolc, Univ. Hawaii)
Wednesday, Jul 24, 2013
Tolbachik (Kamchatka): There are no signs of the eruption ending soon. Although an overall weakly decreasing trend is visible over the past months, tremor levels reported by KVERT remained stable during the past week and lava continues to be erupted form the southern fissure, feeding a vast flow field mainly SE of the volcano. ... [meer...]
Multilope pyroclastic flows (block and ash flows) yesterday morning at Kizimen (annotation by Culture Volcan)
Monday, Jul 22, 2013
Kizimen (Kamchatka): (22 Jul) A rock spine that had been growing at the summit of the active lava dome has collapsed, producing pyroclastic flows and an ash plume rising to 20,000 ft (6 km) altitude. ... [meer...]
Eruption of Sakurajima just before midnight 20-21 July (local time)
Sunday, Jul 21, 2013
Sakurajima (Kyushu, Japan): (21 Jul) The volcano continues to produce relatively frequent and strong ash-rich explosions, but activity has decreased a bit compared to previous days. During last night, it had long-lasting (up to 1-2 hours) phases of continuous ash emissions of various intensity, with dense plumes up to about 500 m height, but completely silent and with no visible incandescence. During other phases, it was emitting a small plume of vapour with some dilute ash. ... [meer...]
Friday, Jul 19, 2013
Sakurajima (Kyushu, Japan): An ash plume at 20,000 ft (6 km) altitude was reported this morning at 03:08 GMT (12:08 local time). This would be the largest explosion of the volcano in at least 1 year. ... [meer...]

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