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Posts Tagged ‘Bagana’

VolcanoWatch Weekly [18 Nov 2009]

Posted by feww on November 19, 2009

VOW: Mayon

Mayon volcano spews smoke and ash for the second time in a day, Wednesday, Nov. 11, 2009 at Legazpi, Albay province, about 340 kilometers southeast of Manila, Philippines. AP Photo/Nelson Salting. Image may be subject to copyright.

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SI / USGS Weekly Volcanic Activity Report
(11 November – 17 November 2009)

New activity/Unrest:

Volcano News (Source: GVP)

CENAPRED reported that on 14 November an ash plume from Popocatépetl rose to an altitude of 7.4 km (24,300 ft) a.s.l. During 14-17 November, steam-and-gas plumes sometimes contained ash.

INGEOMINAS reported that an overflight of Galeras on 14 November revealed thermal anomalies in the main crater measuring 110 degrees Celsius and very low rates of gas discharge.

Ongoing Activity:

Arenal, Costa Rica; Bagana, Bougainville;  Chaitén, Southern Chile;  Fuego, Guatemala;  Karymsky, Eastern Kamchatka (Russia);  Kilauea, Hawaii;  Kizimen, Eastern Kamchatka; Kliuchevskoi, Central Kamchatka (Russia);  Nevado del Huila, Colombia;  Popocatépetl, México;  Rabaul, New Britain;  Reventador, Ecuador;  Sakura-jima, Kyushu;  Sangay, Ecuador;  Santa María, Guatemala;  Shiveluch, Central Kamchatka (Russia);  Soufrière Hills, Montserrat; Suwanose-jima, Ryukyu Islands (Japan)

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VolcanoWatch Weekly [27 August 2009]

Posted by feww on August 28, 2009

Volcanic Activity Report: 19 August – 25 August 2009

VOW: Koryaksky

Koryaksky Volcano on Russia’s Kamchatka Peninsula released a plume on August 27, 2009, caught by MODIS on NASA’s Aqua satellite. The volcano has released intermittent ash and/or steam plumes late August.

This true-color image shows a pale plume, which consists primarily of water vapor, blowing away from the summit east-northeast, toward the Bering Sea.

Vostok Media reported simultaneous activity at six Kamchatka volcanoes, describing  the first concurrent unrest in 60 years as rare. NASA image courtesy MODIS Rapid Response Team, Goddard Space Flight Center. Caption by Michon Scott. [Edited by FEWW.]

New activity/unrest:

Source: Global Volcanism Program (GVP) – SI/USGS Weekly Volcanic Activity Report

KORYAKSKY Eastern Kamchatka 53.320°N, 158.688°E; summit elev. 3,456 m

KVERT reported that during 14-21 August seismic activity from Koryaksky was slightly above background levels. During 13-16 August, gas-and-steam plumes rose to altitudes of 3.5-5 km (11,500-16,400 ft) a.s.l. Based on visual observations during 16-20 August, gas-and-steam plumes containing ash rose to altitudes of 3.5-4.2 km (11,500-13,800 ft) a.s.l. and drifted in multiple directions. Ash plumes were also seen in satellite imagery, drifting 215 km E and W. On 23 August, a probable ash plume detected in satellite imagery drifted 50 km ESE. During 24-25 August, seismicity increased; more than 100 earthquakes were recorded. The Level of Concern Color Code remained at Orange.

Geologic Summary. The large symmetrical Koryaksky stratovolcano is the most prominent landmark of the NW-trending Avachinskaya volcano group, which towers above Kamchatka’s largest city, Petropavlovsk. Erosion has produced a ribbed surface on the eastern flanks of the 3456-m-high volcano; the youngest lava flows are found on the upper western flank and below SE-flank cinder cones. No strong explosive eruptions have been documented during the Holocene. Extensive Holocenefissure vents about 3900-3500 years ago reached Avacha Bay. Only a few moderate explosive eruptions have occurred during historical lava fields on the western flank were primarily fed by summit vents; those on the SW flank originated from flank vents. Lahars associated with a period of lava effusion from south- and SW-flank time. Koryaksky’s first historical eruption, in 1895, also produced a lava flow. (Source: GVP).


Based on information from the Tegucigalpa MWO, the Washington VAAC reported that ash was detected within 15 km of Fuego on 19 August. According to INSIVUMEH, rumbling sounds were accompanied by incandescent tephra ejected 75 m high on 21 August. (Source: GVP).

Ongoing Activity:

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VolcanoWatch Weekly [13 August 2009]

Posted by feww on August 14, 2009

Volcanic Activity Report:  5  – 11 August 2009

VoW: Kilauea

Since the vent collapse in late June, Kilauea’s summit plume had been wispy, translucent and low in SO2 content, resulting in improved air quality in Kona and Ka‘u. However, the summit vent has picked up in activity again this week. (Photo courtesy of Hawaiian Volcano Observatory). Source: Click Here.

New activity/unrest:

Source: Global Volcanism Program (GVP) – SI/USGS Weekly Volcanic Activity Report

Ongoing Activity:

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Volcano Watch [No. 38]

Posted by feww on September 25, 2008

17 September-23 September 2008

New Activity/Unrest:

An ash plume ejected from Bagana (right), just south of the dark-colored caldera lake of Billy Mitchell, rises into the atmosphere.

Steam clouds rise from an andesitic lava flow descending the NW flank of Bagana on April 26, 1988. The massive symmetrical lava cone, one of the most active volcanoes in Papua New Guinea, was largely constructed by an accumulation of viscous andesitic lava flows. – Photo by Wally Johnson, 1988 (Australia Bureau of Mineral Resources). Source: GVP

Elevation:        1,750 metres (5,741 feet)
Location:          Bougainville, Papua New Guinea
Range:              Emperor Range
Coordinates:    6.140° S 155.195° E
Type:                Lava cone
Last eruption:  2008 (continuing)

Ongoing Activity:

The Weekly Volcanic Activity Report is a cooperative project between the Smithsonian’s Global Volcanism Program and the US Geological Survey’s Volcano Hazards Program.

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Posted in andesitic lava, Billy Mitchell, environment, explosive erruption, Rabaul, Shiveluch | Tagged: , , , , | 2 Comments »