Gaia «chunga»

Karymsky (Russia) - Report for 13 February-19 February 2019 - NEW

Actividad volcánica (SI/USGS) - Mié, 2019/02/20 - 07:14

KVERT reported that at 1427 on 16 February a satellite image captured an ash plume from Karymsky drifting 55 km SE at altitudes of 2.5-3 km (8,200-10,000 ft) a.s.l. The Aviation Color Code was raised to Orange (the second highest level on a four-color scale). According to the Tokyo VAAC a possible ash plume on 17 February rose to 3.7 km (12,000 ft) a.s.l. and drifted SE. A weak ash plume drifting 117 km ESE was visible in satellite images on 18 February.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

Categorías: Gaia «chunga»

Piton de la Fournaise (France) - Report for 13 February-19 February 2019 - NEW

Actividad volcánica (SI/USGS) - Mié, 2019/02/20 - 07:14

OVPF reported that a seismic crisis began at Piton de la Fournaise at 1521 on 16 February accompanied by rapid deformation. The number of earthquakes sharply decreased at 1618 and deformation stopped at 1630. A second seismic crisis began at 0916 on 18 February, again accompanied by rapid deformation. Tremor commenced at 0948, coincident with at least eruptive fissures opening on the E flank of Dolomieu crater. Weather conditions prevented good views of the eruption site. Lava fountains rose less than 30 m above the vents, and after about an hour the longest lava flow reached 1,900 m elevation. Lava effusion ceased at 2200 on 18 February. A seismic crisis began at 1500 on 19 February, and tremor began to be recorded at 1700. Gas emissions were recorded by webcams for about an hour. During an overflight on 20 February the OVPF team observed a new eruption site located at 1,800 m elevation at the foot of Piton Madoré. One fissure opened and at 0620 only one lava fountain was active. The front of a lava flow reached 1,300 m elevation.

Source: Observatoire Volcanologique du Piton de la Fournaise (OVPF)

Categorías: Gaia «chunga»

Tengger Caldera (Indonesia) - Report for 13 February-19 February 2019 - NEW

Actividad volcánica (SI/USGS) - Mié, 2019/02/20 - 07:14

PVMBG reported that at 0600 on 18 February an eruption at Tengger Caldera?s Bromo cone generated a dense white-and-brown ash plume that rose 600 m and drifted WSW. The Alert Level remained at 2 (on a scale of 1-4).

Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)

Categorías: Gaia «chunga»

Kerinci (Indonesia) - Report for 13 February-19 February 2019

Actividad volcánica (SI/USGS) - Mié, 2019/02/20 - 07:14

PVMBG reported that at 1309 on 13 February an observer noted a brownish-white ash plume rising 400 m above Kerinci?s crater rim and drifting NE. The Alert Level remained at 2 (on a scale of 1-4).

Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)

Categorías: Gaia «chunga»

Krakatau (Indonesia) - Report for 13 February-19 February 2019

Actividad volcánica (SI/USGS) - Mié, 2019/02/20 - 07:14

PVMBG reported that a brief explosive event at Anak Krakatau was recorded at 0026 on 14 February, though weather conditions prevented clear views of the event. During 15-17 February diffuse white plumes rose 50 m above the summit. At 1402 on 18 February another short-lived event produced an ash plume that rose about 500 m above the summit and drifted S and SW. The Alert Level remained at 3 (on a scale of 1-4), and residents were warned to remain outside of the 5-km radius hazard zone from the crater.

Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)

Categorías: Gaia «chunga»

Manam (Papua New Guinea) - Report for 13 February-19 February 2019

Actividad volcánica (SI/USGS) - Mié, 2019/02/20 - 07:14

Based on analyses of satellite imagery and model data, the Darwin VAAC reported that on 15 February an ash plume from Manam rose to an altitude of 4.9 km (16,000 ft) a.s.l. and drifted E.

Source: Darwin Volcanic Ash Advisory Centre (VAAC)

Categorías: Gaia «chunga»

Poas (Costa Rica) - Report for 13 February-19 February 2019 - NEW

Actividad volcánica (SI/USGS) - Mié, 2019/02/20 - 07:14

OVSICORI-UNA reported that since 8 February almost continuous emissions of gas has been recorded at Poás, with plumes rising as high as 1 km and drifting mainly SW. During 13-14 February the emissions contained ash; gas-and-ash plumes drifted SW, impacting areas downwind including Naranjo, Zarcero, and Grecia (16 km SW). Gas-and-ash emissions rose from the crater on 15 February, and gas emissions were recorded on 18 February.

Source: Observatorio Vulcanologico y Sismologico de Costa Rica-Universidad Nacional (OVSICORI-UNA)

Categorías: Gaia «chunga»

Agung (Indonesia) - Report for 13 February-19 February 2019

Actividad volcánica (SI/USGS) - Mié, 2019/02/20 - 07:14

PVMBG reported that an explosive event at Agung was recorded at 0434 on 14 February, causing ashfall in Bugbug village, 20 km SE. Crater incandescence was recorded at night by webcams in Karangasem City (16 km SE). The Alert Level remained at 3 (on a scale of 1-4) with the exclusion zone set at a 4-km radius.

Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)

Categorías: Gaia «chunga»

Etna (Italy) - Report for 13 February-19 February 2019

Actividad volcánica (SI/USGS) - Mié, 2019/02/20 - 07:14

On 19 February INGV summarized Etna?s fissure eruption that occurred high on the SE flank during 24-27 December 2018, noting that 3-4 million cubic meters of lava erupted and covered an area of 1 square kilometer. After the event seismicity gradually decreased. The last significant event was a ML 4.1 recorded on 8 January 2019; afterwards seismicity was characterized as frequent events with modest magnitudes. Since the beginning of January ash emissions intermittently rose mainly from Northeast Crater (NEC) and more sporadically from Bocca Nuova. News sources noted that the Catania Airport (Aeroporto di Catania ? Sicilia) was closed during 26-27 January. Preliminary assessments of some of the ash deposits showed they contained no juvenile material. During 11-17 February ash emissions of variable intensity rose from NEC and were notable on 14 and 18 February. Volcanic tremor amplitude did not significantly vary compared to the previous week, having average values overall. The Catania Airport announced the partial closure of airspace and flight delays during 17-18 February due to ash emissions.

Sources: Aeroporto di Catania,Sezione di Catania - Osservatorio Etneo (INGV)

Categorías: Gaia «chunga»

Kadovar (Papua New Guinea) - Report for 13 February-19 February 2019

Actividad volcánica (SI/USGS) - Mié, 2019/02/20 - 07:14

Based on satellite data and wind model data, the Darwin VAAC reported that on 16 February ash plumes from Kadovar rose to an altitude of 1.8 km (6,000 ft) a.s.l. and drifted ESE.

Source: Darwin Volcanic Ash Advisory Centre (VAAC)

Categorías: Gaia «chunga»

Nevados de Chillan (Chile) - Report for 13 February-19 February 2019

Actividad volcánica (SI/USGS) - Mié, 2019/02/20 - 07:14

ONEMI and SERNAGEOMIN reported that during 5-12 February growth of the lava dome in Nevados de Chillán?s Nicanor Crater was very slow (10.8 cubic meters per hour). White water vapor emissions, occasionally grayish from included tephra, rose as high as 1.7 km and drifted SE and NE. Crater incandescence was recorded by a webcam each day. At 0109 on 15 February an explosive event partially destroyed the lava dome and ejected incandescent material onto areas near the crater. The Alert Level remained at Orange, the second highest level on a four-color scale, and residents were reminded not to approach the crater within 3 km. ONEMI maintained an Alert Level Yellow (the middle level on a three-color scale) for the communities of Pinto, Coihueco, and San Fabián.

Sources: Oficina Nacional de Emergencia-Ministerio del Interior (ONEMI) ,Servicio Nacional de Geología y Minería (SERNAGEOMIN)

Categorías: Gaia «chunga»

Karangetang (Indonesia) - Report for 13 February-19 February 2019 - NEW

Actividad volcánica (SI/USGS) - Mié, 2019/02/20 - 07:14

PVMBG reported that during 13-19 February sometimes-dense white plumes rose as high as 400 m above the rim of Karangetang?s Main Crater. White emissions that were occasionally bluish rose mostly 50-150 m above Kawah Dua?s (North Crater) crater rim, though on 18 February the plumes were grayish and rose 200-300 m. Roaring sounds from the volcano were occasionally noted at an observation post. The Alert Level remained at 3 (on a scale of 1-4), and residents were warned to remain outside of the 2.5-km exclusion zone around the N and S craters, and additionally within 3 km WNW and 4 km NW.

Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)

Categorías: Gaia «chunga»

Merapi (Indonesia) - Report for 13 February-19 February 2019

Actividad volcánica (SI/USGS) - Mié, 2019/02/20 - 07:14

PVMBG reported that during 8-17 February the volume of the lava dome in Merapi?s summit crater was about the same as the previous week, and there were no apparent morphological changes. Most of the extruded lava did not add to the dome volume but instead fell into the upper parts of the Gendol River drainage and the SE flank. Incandescent avalanches traveling down the SE flank were visible at night. At 0858 on 11 February a pyroclastic flow traveled 400 m down the Gendol drainage. The Alert Level remained at 2 (on a scale of 1-4), and residents were warned to remain outside of the 3-km exclusion zone.

Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)

Categorías: Gaia «chunga»

Aira (Japan) - Report for 13 February-19 February 2019

Actividad volcánica (SI/USGS) - Mié, 2019/02/20 - 07:14

JMA reported that 12-18 February incandescence was visible from Minamidake crater (at Aira Caldera?s Sakurajima volcano), and two events and two explosions were recorded. One of the explosions occurred at 0624 on 14 February, producing a plume that rose 1.5 km above the crater rim and ejecting material 500-700 m from the crater. An explosion on 17 February generated a plume that rose 2.3 km above the crater rim and ejected material 1-1.3 km from the crater. The Alert Level remained at 3 (on a 5-level scale).

Source: Japan Meteorological Agency (JMA)

Categorías: Gaia «chunga»

Cleveland (United States) - Report for 13 February-19 February 2019

Actividad volcánica (SI/USGS) - Mié, 2019/02/20 - 07:14

AVO reported that unrest at Cleveland continued during 13-19 February, though no activity was detected in seismic or infrasound data. Elevated surface temperatures were identified in satellite images; weather clouds sometimes prevented views of the volcano. The Aviation Color Code remained at Orange and the Volcano Alert Level remained at Watch.

Source: US Geological Survey Alaska Volcano Observatory (AVO)

Categorías: Gaia «chunga»

Dukono (Indonesia) - Report for 13 February-19 February 2019

Actividad volcánica (SI/USGS) - Mié, 2019/02/20 - 07:14

Based on satellite data, wind model data, and ground-based observations, the Darwin VAAC reported that during 13-19 February ash plumes from Dukono rose to an altitude of 2.1 km (7,000 ft) a.s.l. and drifted S and SW. The Alert Level remained at 2 (on a scale of 1-4), and visitors were warned to remain outside of the 2-km exclusion zone.

Sources: Darwin Volcanic Ash Advisory Centre (VAAC),Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)

Categorías: Gaia «chunga»

Ebeko (Russia) - Report for 13 February-19 February 2019

Actividad volcánica (SI/USGS) - Mié, 2019/02/20 - 07:14

Volcanologists in Severo-Kurilsk (Paramushir Island), about 7 km E of Ebeko, observed explosions during 8-15 February that sent ash plumes to 2.5 km (8,200 ft) a.s.l. Ash fell in Severo-Kurilsk on 11 February. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

Categorías: Gaia «chunga»

Popocatepetl (Mexico) - Report for 13 February-19 February 2019

Actividad volcánica (SI/USGS) - Mié, 2019/02/20 - 07:14

CENAPRED reported that each day during 13-19 February there were 20-140 steam-and-gas emissions from Popocatépetl, some of which contained ash. Seismicity began to increase at 2100 on 14 February coincident with the onset of Strombolian activity. Incandescent material was ejected 1.5 km onto the flanks, and gas-and-ash plumes rose as high as 2 km above the carter rim and drifted SW. The phase lasted for about seven hours. Explosions were recorded at 1528, 1602, 1824, and 1935 on 14 February and at 0409 on 15 February. Ashfall was reported in areas downwind including Tetela del Volcán (20 km SW), Zacualpan (31 km SW), Jonacatepec (43 km SW), Cuautla (43 km SW), Ocuituco (24 km SW), Yecapixtla (31 km SW), and in Tochimilco (16 km SSE). During 0044-0606 on 16 February Strombolian activity ejected incandescent material that fell back into the crater. Gas-and-ash plumes rose 1 km and drifted SE. A period of harmonic tremor began at 1600, accompanied by emissions of water vapor and gas that rose 1.5 km. By 1830 ejected incandescent fragments were visible and fell onto flanks 400 m from the crater. Plumes rose 2 km and drifted NNE. Seismicity decreased by 2100 and material was no longer being ejected above the crater rim, though crater incandescence remained visible. There were at least 14 explosions detected on 17 February; the more significant events were recorded at 0438, 0457, 0719, 0821, and 0956, generating plumes that rose 2 km and drifted NNE. Minor ashfall was reported in areas downwind including Tlaxco (85 km NE) and Xalostoc, Nativitas (40 km NE), Hueyotlipan (57 km NNE), Amaxac de Guerrero (60 km NE), Tepetitla de Lardizábal (37 km NE), Texoloc, and Tlaxcala (51 km NE). An explosion at 0704 on 18 February produced a plume that rose 2 km and drifted NNE. An explosion was detected at 0613 on 19 February. On 20 February CENAPRED noted growth of lava dome #82. The Alert Level remained at Yellow, Phase Two (middle level on a three-color scale).

Source: Centro Nacional de Prevencion de Desastres (CENAPRED)

Categorías: Gaia «chunga»

Sheveluch (Russia) - Report for 13 February-19 February 2019

Actividad volcánica (SI/USGS) - Mié, 2019/02/20 - 07:14

KVERT reported that during 8-15 February Sheveluch?s lava dome continued to grow, extruding blocks on the N side, and producing hot avalanches and fumarolic plumes. A thermal anomaly was identified in satellite images daily. Video and satellite data recorded gas-and-steam plumes with variable ash content rising to 4 km (13,100 ft) a.s.l. and drifting in multiple directions. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

Categorías: Gaia «chunga»

Turrialba (Costa Rica) - Report for 13 February-19 February 2019

Actividad volcánica (SI/USGS) - Mié, 2019/02/20 - 07:14

OVSICORI-UNA reported that during 13-15 February a period of almost continuous gas emissions with minor ash content rose 200-300 m above the rim of Turrialba?s active vent. The plumes drifted NW, W, and SW. An event at 1330 on 15 February produced a plume that rose 1 km and drifted W. During the morning of 18 February a plume with low ash content rose from the vent. An event at 1310 generated a plume that rose 500 m and drifted W.

Source: Observatorio Vulcanologico y Sismologico de Costa Rica-Universidad Nacional (OVSICORI-UNA)

Categorías: Gaia «chunga»
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