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Colima volcano (Mexico) - Smithsonian / USGS Weekly Volcanic Activity Report for 18 January-24 January 2017 (Continuing Activity)

Mi, 18. Jan 2017, 06:00
06:00 AM | VON: VN
The Unidad Estatal de Protección Civil de Colima reported that at 0027 on 18 January a moderate-to-large explosion at Colima ejected incandescent material as far as 2 km onto the W, SW, SE, and N flanks.



Based on webcam and satellite images, the Mexico City MWO, and pilot observations, the Washington VAAC reported that during 18-24 January ash plumes from Colima rose to altitudes of 4.1-6.7 km (15,000-25,000 ft) a.s.l. and drifted in multiple directions. On 19 January explosions were recorded by the webcam and noted by the Jalisco Civil protection agency; ashfall was also reported in Comala and Cuauhtémoc by the agency.
A strong thermal anomaly was identified in satellite images. Remnant ash clouds were centered about 350 km SE on 20 January and about 185 km S on 22 January. A large ash plume rose to an altitude of 10.7 km (35,000 ft) a.s.l. on 23 January and drifted NE.

Sources: Unidad Estatal de Protección Civil de Colima, Washington Volcanic Ash Advisory Center (VAAC)
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From: Global Volcanism Program, 2017. Report on Colima. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 18 January-24 January 2017. Smithsonian Institution and US Geological Survey.

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Di, 17. Jan 2017, 22:51

Colima volcano (Mexico), activity update: strong vulcanian explosions

Powerful explosion of Colima Sunday morning 11:07 local time (image: Christian Villicaña / Colima de Ayer / facebook)
The volcano's activity remains above average. Vulcanian-type explosions from the summit crater occur at intervals of several hours and are sometimes very powerful, generating dense ash columns that rise 2-4 km, and cover the upper slopes of the volcano with bombs. Read all
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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
In this photo released by the civil defense unit of the state government of Jalisco, the eruption plume from the initial stage of the powerful vulcanian explosion at Colima volcano on May 23, 2005, has been captured on film. The collapsing eruption column loaded with ash and rock fragments has not yet fully developed, but the flanks of the volcano are already covered by the impacts of ballistics. (AP Photo/Proteccion Civil del estado de Jalisco-HO)
In this photo released by the civil defense unit of the state government of Jalisco, the eruption plume from the initial stage of the powerful vulcanian explosion at Colima volcano on May 23, 2005, has been captured on film. The collapsing eruption column loaded with ash and rock fragments has not yet fully developed, but the flanks of the volcano are already covered by the impacts of ballistics. (AP Photo/Proteccion Civil del estado de Jalisco-HO)

Colima Vulkan
Stratovolcano 3850 m / 12,631 ft
Western Mexico, 19.51°N / -103.62°W
Aktueller Status: normal / ruhend (1 von 5) Ausbrüche des Colima:
1519, 1560, 1576, 1585, 1590, 1602(?), 1606, 1611-1613, 1622, 1690, 1711, 1743(?), 1744, 1749(?),1769, 1770, 1771, 1780, 1794, 1795, 1804, 1806-1809, 1818, 1819, 1866, 1869, 1870-71, 1872-73, 1874, 1875-78, 1879-80, 1880-81, 1882-84, 1885-1886, 1887, 1889-90, 1890, 1891-92, 1893-1902, 1903, 1904-1906, 1908-09, 1913, 1926-1931(?), 1941(?), 1957-1960, 1961-62, 1963-70, 1973(?), 1975-76, 1977-1982, 1983(?), 1985-86, 1987, 1988(?), 1991, 1994, 1997-2011, 2013-ongoing
Typische Aktivität
Dominantly explosive. Construction of lava domes, vulcanian eruptions and strombolian activity. In near-constant activity since 1994.

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