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News
Monday, Jun 06, 2016
During May 2015, GGC recorded an increase in small seismic activity associated with fracturing of rock inside the volcano, compared to April. The quakes (all below magnitude 2) were concentrated in the northern and eastern sectors of the volcanic edifice at depths ranging between 3.4 and 6.6 km. No other significant changes were detected at the volcano and its alert status remains at "green". ... [more]
 

Santa Isabel volcano

shield volcano 4950 m / 16,240 ft
Colombia, 4.82°N / -75.37°W
Current status: restless (2 out of 5)
Santa Isabel webcams / live data
Santa Isabel volcano books
Last update: 6 Jun 2016
Typical eruption style: effusive
Santa Isabel volcano eruptions: none in historic times
TimeMag. / DepthDistanceLocation
Sat, 25 Feb
Sat, 25 Feb 13:51 UTCM 3.2 / 3 km3 km COLOMBIA
Sat, 11 Feb
Sat, 11 Feb 22:14 UTCM 2.2 / 3 km34 km COLOMBIA
Santa Isabel volcano is a small andesitic shield volcano in NW Colombia, 9 km SSW of Nevado del Ruiz volcano and NW of Tolima volcano.

Background:

3 lava domes occupy the elongated, N-S-trending glaciated summit region, which has 2 main peaks. Lava flows less than 10,000 years old fill valleys SW and SE of Santa Isabel, but there are no known historic eruptions.
A small lava dome is found about 10 km SW of the volcano.

Laguna Verde in Los Nevados National Park is a 900x400m volcanic lake at an elevation of 4300 m 2 km NE of Santa Isabel Volcano.
The lake is known for its ecosystem and birdlife. It belongs to the Subalpine Rain Páramo, with a climate of low temperatures (3º - 6°C), annual rainfall of 1000–1500 mm, high humidity and strong winds.
In 2000, many birds were killed at the lake, because of an increase of toxic ammonium salts.
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Source: Juan C. Verhelst (2006) "APPARENT NATURAL POISONING OF NEOTROPICAL MIGRATORY BIRDS AT LAGUNA VERDE, COLOMBIA", Ornitología Colombiana No 4 (2006): 70-72


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