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Colima volcano (Mexico) - Smithsonian / USGS Weekly Volcanic Activity Report for 8 February-14 February 2017 (Continuing Activity)

Ср, 8 фев 2017, 06:00
06:00 AM | ПЇЅПЇЅПЇЅПЇЅПЇЅ: VN
The Universidad de Colima reported that a large explosion at Colima was recorded at 1732 on 3 February, generating an ash plume that rose 6 km above the crater rim and drifted SSW. A small pyroclastic flow traveled down the E flank. The report stated that the internal crater is about 250 m in diameter and 50-60 m deep; previous lava domes had been destroyed in late September and mid-November 2016.
On 9 February the sulfur dioxide gas flux was low (19 tons/day). Based on webcam and satellite images, the Washington VAAC reported that on 11 February an ash plume rose to an altitude of 4 km (13,000 ft) a.s.l. and drifted W.
On 14 February an ash plume rose to an altitude of 5.2 km (17,000 ft) a.s.l. and drifted NE.

Sources: Washington Volcanic Ash Advisory Center (VAAC), Centro Universitario de Estudios e Investigaciones de Vulcanologia - Universidad de Colima
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From: Global Volcanism Program, 2017. Report on Colima. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 8 February-14 February 2017. Smithsonian Institution and US Geological Survey.

Предыдущие новости

Mon, 6 Feb 2017, 05:15
Colima volcano Volcanic Ash Advisory: VA EM ARND 06/0400Z.
Sun, 5 Feb 2017, 10:30
Colima volcano Volcanic Ash Advisory: EM ARND 05/0935Z
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Background:

Colima volcano is one of the most active in North America and one of the potentially most dangerous ones. It has had more than 30 periods of eruptions since 1585, including several significant eruptions in the late 1990s. Scientific monitoring of the volcano began 20 years ago. 

The Colima volcanic complex is the most prominent volcanic center of the western Mexican Volcanic Belt.  It consists of two southward-younging volcanoes, Nevado de Colima (the 4320 m high point of the complex) on the north and the 3850-m-high historically active Volcán de Colima at the south. 
A group of cinder cones of probable late-Pleistocene age is located on the floor of the Colima graben west and east of the Colima complex. Volcán de Colima (also known as Volcán Fuego) is a youthful stratovolcano constructed within a 5-km-wide caldera, breached to the south, that has been the source of large debris avalanches.  Major slope failures have occurred repeatedly from both the Nevado and Colima cones, and have produced a thick apron of debris-avalanche deposits on three sides of the complex.  Frequent historical eruptions date back to the 16th century.  Occasional major explosive eruptions (most recently in 1913) have destroyed the summit and left a deep, steep-sided crater that was slowly refilled and then overtopped by lava dome growth.
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Source: GVP, Smithsonian Institute - Colima information
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