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Volcano activity, April 2010
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Date of first activityVolcanoLocationCountryISO country codeLongLatSummit elev, metresDetails
11-Apr-10Miyake-JimaIzu IslandsJapanJP34.079°N139.529°E815Eruption from Miyake-jima on 11 April. Plume details not recorded
9-Apr-10DukonoHalmaheraIndonesiaID1.68°N127.88°E1,335Ash plume from Dukono was seen on satellite imagery drifting over 220 km NE at an altitude of 3.7 km (12,000 ft) a.s.l. During 10-12 April ash plumes rose to altitudes of 1.5-2.1 km (5,000-7,000 ft) a.s.l. and drifted 20-75 km NE.
8-Apr-10EtnaSicilyItalyIT37.734°N15.004°E3,330Dozen low-frequency events located near the summit of Etna were detected by the seismic network. Concurrently, a dark-colored ash plume rose 1 km from a pit crater located at the E base of the Southeast Crater and drifted NE. Dark emissions from the central crater were also seen a short time later. Ashfall was reported from a few local areas. On 9 April intense gas emissions were noted at the pit crater
7-Apr-10EgonFlores IslandIndonesiaID8.67°S122.45°E1,703On 7 April the Alert Level for Egon was raised from 1 to 2 (on a scale of 1-4) due to a marked increase in seismic activity since 28 March. Small steam plumes normally rose 10 m above the crater
7-Apr-10EyjaföllSouthern IcelandIcelandIS63.63°N 19.62°W1,666At 2300 on 13 April, a seismic swarm was detected below the central part of Eyjafjöll, W of the previous eruption fissures. About an hour later, the onset of seismic tremor heralded an eruption from a new vent on the S rim of the central caldera, capped by Eyjafjallajökull glacier. The eruption was visually confirmed early in the morning on 14 April; an eruption plume rose at least 8 km above the glacier. Meltwater flowed to the N and S. News outlets reported that a circular ice-free area about 200 m in diameter was seen near the summit. Scientists conducting an overflight saw a new 2-km-long, N-S-trending fissure, and ashfall to the E. About 700 people were ordered to evacuate the area. Flooding increased throughout the day, causing road closures and some structural damage
7-Apr-10GauaBank IslandsVanuatuVU14.27°S167.50°E797Vanuatu Geohazards Observatory reported that recent field observations of Gaua confirmed significant changes in activity. Gas plumes were detected daily by satellite images. During the end of March through the beginning of April, ash plumes rose daily to altitudes of 2.1-3 km (7,000-10,000 ft) a.s.l. Explosions were heard in nearby villages. Starting on 3 April villagers living in the N and S parts of the island reported ashfall and saw bombs ejected from Gaua. Based on Vanuatu Geohazards Observatory information, the Wellington VAAC reported that during 8-12 April ash plumes rose to an altitude of 3 km (10,000 ft) a.s.l. Ash plumes were seen on satellite imagery on 11 and 12 April drifting S and SE. The Vanuatu Volcano Alert Level (VVAL) remained at 2 (on a scale of 0-4).
7-Apr-10RedoubtSouthwestern AlaskaAlaskaUS60.485°N152.742°W3,108Small earthquakes in the vicinity of Redoubt's summit approached background levels during 7-11 April. Gas measurements on 8 April were consistent with a passively degassing and cooling lava dome. The Volcano Alert Level was lowered to Normal and the Aviation Color Code was lowered to Green on 12 April
7-Apr-10ReventadorEcuadorEcuadorEC0.077°S77.656°W3,562Ash plume seen by pilots rose to altitudes of 4.6-6.7 km (15,000-22,000 ft) a.s.l. and drifted W. Cloud cover prevented satellite observations of the area. The VAAC also noted that seismicity was elevated.
7-Apr-10KilaueaHawaiiUSUS19.421°N155.287°W1,222Incandescence from a 60-m-wide active lava surface about 200 m below a 130-m-wide vent in the floor of Kilauea's Halema'uma'u crater. The lava surface circulated and both rose and drained through a pit in the cavity floor; a few times the level fluctuated between 235 and 260 m below the surface. Rocks from the vent walls fell into the pond, causing spattering. Plumes from the vent drifted mainly SW, dropping small amounts of ash, and occasionally Pele's hair and Pele's tears, downwind. Measurements indicated that the sulfur dioxide emission rate at the summit remained elevated; 600 and 500 tonnes per day were measured on 8 and 9 April, respectively
7-Apr-10PopocatepetlMexicoMexicoMX19.023°N98.622°W5,426Most days during 7-13 April emissions of steam and gas from Popocatépetl contained minor amounts of ash
7-Apr-10Sakura-JimaKyushuJapanJP31.585°N130.657°E1,1177-13 April explosions from Sakura-jima sometimes produced plumes identified in satellite imagery. Those plumes, along with ash plumes occasionally seen by pilots, rose to altitudes of 1.5-3 km (5,000-10,000 ft) a.s.l. and sometimes drifted NW, E, and SE
6-Apr-10Batu TaraKomba IcelandIndonesiaID7.792°S123.579°E748Ash plumes from Batu Tara rose to an altitude of 2.1 km (7,000 ft) a.s.l. and drifted 25-75 km NW, NE, E, and SE.
2-Apr-10KarymskyEastern KamchatkaRussiaRU54.05°N159.45°E1,536Seismic activity from Karymsky was above background on 2 and 3 April and at background levels during 4-9 April. Satellite imagery revealed a thermal anomaly from the volcano during 3-4 and 6 April. The Aviation Color Code level remained at Orange
2-Apr-10KliuchevskoiCentral KamchatkaRussiaRU56.057°N160.638°E4,835Seismic activity from Kliuchevskoi was above background levels. Strombolian activity periodically ejected material 200 m above the crater and lava continued to flow down the flanks. Satellite imagery revealed a large daily thermal anomaly from the volcano, and gas-and-steam plumes that drifted 30-180 km NNE. On 7 April, gas-and-steam plumes containing small amounts of ash rose to an altitude of 6.3 km (20,700 ft) a.s.l. The next day, a diffuse ash plume drifted 55-60 km NE. The Aviation Color Code level remained at Orange
2-Apr-10RabaulEast New BritainPapua New GuineaPG4.271°S152.203°E688During 2-8 April seismicity was low and variable amounts of white vapor rose from Tavurvur cone
2-Apr-10ShiveluchCentral KamchatkaRussiaRU56.653°N161.360°E3,283Seismic activity from Shiveluch was above background levels. Ash plumes from hot avalanches rose to an altitude of 6.1 km (20,000 ft) a.s.l. on 5 and 8 April. Satellite imagery revealed a large daily thermal anomaly from the lava dome, and ash plumes that drifted about 100 km SE on 5 April. The Tokyo VAAC reported that on 10 April ash plumes were seen in satellite imagery. The Aviation Color Code level remained at Orange
2-Apr-10Soufriere hillsMontserratMontserratMS16.72°N62.18°W915Activity from the Soufrière Hills lava dome was at a low level. Rockfalls occurred sporadically from several areas of the lava dome. Multiple small areas of incandescence on the dome were visible several nights during the reporting period. Heavy rains on 2 April caused lahars in the Farm River and Trants area (NNE). The Hazard Level remained at 3
Jan-10ArenalCosta RicaCosta RicaCR10.463°N84.703°W1,670A lava flow that began in mid-January remained active on the S flank. Acid rain and small amounts of ejected pyroclastic material affected the NE, E, and SE flanks. Avalanches from the crater and from lava-flow fronts traveled down the SW, S, and SE flanks, occasionally igniting vegetation. Crater D produced only fumarolic activity