Volcano news: Colima Volcano (Mexico)
Colima volcano (Western Mexico) activity update: continuing lava flow
Freitag Jul 17, 2015 11:35 | IS
Archive photograph showing explosive activity of Colima volcano in February 2015, with the city lights of Colima in the background.Activity remains exclusively effusive, and overall seems to be decreasing. The lava flow on the southern flank continues to advance slowly, approx. 200 meters per day. Rockfalls from other areas of the crater have been more rare than during the previous day.
During an overflight this morning, we could see that last week's lava dome no longer exists and that the southern rim of the crater is breached, through where the lava flow emerging from a vent in the crater exits onto the steep flank.
Vigorous degassing creates a steam plume rising up to approx. 1 km from the crater.
Donnerstag, Jul 16, 2015
Activity remains exclusively effusive, and overall seems to be decreasing. The lava flow on the southern flank continues to advance slowly, approx. 200 meters per day. Rockfalls from other areas of the crater have been more rare than during the previous day. ... [mehr]
Mittwoch, Jul 15, 2015
Activity at the volcano has been relatively calm. No more significant explosions nor pyroclastic flows were observed during the past 24 hours, but the lava flow on the southern side continues to advance slowly, accompanied by occasional smaller and larger incandescent rockfalls. ... [mehr]
Montag, Jul 13, 2015
The volcano's activity at least seems to have quieted down and changed in style, now producing less rock avalanches and pyroclastic flows (as result of lava extrusion and overspilling), but more intermittent explosions. ... [mehr]
Freitag, Jul 10, 2015
A new eruptive phase has started at the volcano earlier this month. A new lava dome started to grow quickly in the summit crater and has been producing frequent explosions, glowing avalanches and pyroclastic flows (video): ... [mehr]
Mittwoch, Jun 03, 2015
Explosions of various sizes continue to occur from the volcano's summit vent. A particularly spectacular one this morning around 06:10 local time showered the summit cone with incandescent material and triggered small pyroclastic flows: ... [mehr]
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.
Source: GVP, Smithsonian Institute - Colima information