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 recording at Telica (TELN station, INETER)
This morning's seismic signal from Tungurahua (RETU station, IGPEN)
Current seismic recording from Sabancaya volcano (BHZ station, IGP)
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.
MODIS hot spot data (past 7 days) for Heard volcano (ModVolc, Univ. Hawaii)
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.
Wednesday, Jul 24, 2013
Volcanic activity worldwide 23-24 Jul 2013: Popocatépetl, Merapi, Reventador, Turrialba, Tungurahua, Sakurajima
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...]
Volcanic activity worldwide 22 Jul 2013: Santa María / Santiaguito, Pacaya, Fuego, Popocatépetl, M...
Monday, Jul 22, 2013
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