Cayambe volcano (Ecuador) - Smithsonian / USGS Weekly Volcanic Activity Report for 28 December-3 January 2017 (New Activity / Unrest)

Wed, 28 Dec 2016, 06:00
06:00 AM | BY: VN
On 28 December IG reported continued anomalous seismic activity at Cayambe characterized by volcano-tectonic and long-period earthquakes located 2-8 km below the summit. As many as 40 earthquakes had been recorded each day for the previous two weeks and starting on 24 December that number again increased, especially for volcano-tectonic events. A swarm on 27 December consisted of 100 small-magnitude events.
A strong sulfur odor persisted, and cracks in the glacier near the summit that climbers has recently reported were visible during an overflight. In addition, deformation on the flanks was detected in GPS data.

Source: Instituto Geofísico-Escuela Politécnica Nacional (IG)
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From: Global Volcanism Program, 2016. Report on Cayambe. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 28 December-3 January 2017. Smithsonian Institution and US Geological Survey.

Previous news

Wed, 14 Dec 2016, 06:00
IG reported that a seismic swarm detected at Cayambe on 5 June was characterized by an increase in the number of volcano-tectonic events. The swarm occurred near an active fault system, NE of the volcano. The seismic activity progressively declined to baseline levels during August. ... Read all
Wed, 7 Dec 2016, 11:26
Current earthquakes (yellow: Sep-Dec 2016; blue: June 2016) under Cayambe (image: IGEPN)
The volcano has become restless. Scientists from Ecuador's Institute of Geophysics (IGEPN) recorded an increased number of earthquakes under the volcano a new report shows. The increased seismicity could be (but not must be) a precursor of renewed activity in the medium-term future (weeks, months?). ... Read all
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