Arenal volcano (Costa Rica) - Smithsonian / USGS Weekly Volcanic Activity Report for 11 September-17 September 2013 (New Activity / Unrest)
OVSICORI-UNA conducted an overflight of Arenal on 14 September to measure gas emissions, and found low concentrations of carbon dioxide, water, and hydrogen sulfide. An infrared camera detected a ring of thermal anomalies along the rim of Crater C.
Wed, 11 Sep 2013, 06:0006:00 AM | BY: VN
Source: Observatorio Vulcanologico y Sismologico de Costa Rica-Universidad Nacional (OVSICORI-UNA)
From: Global Volcanism Program, 2013. Report on Arenal. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 11 September-17 September 2013. Smithsonian Institution and US Geological Survey.
Wed, 4 Sep 2013, 06:00
Arenal volcano (Costa Rica) - Smithsonian / USGS Weekly Volcanic Activity Report for 4 September-10 September 2013 (New Activity / Unrest)
OVSICORI-UNA reported that plumes composed mainly of water vapor rose from the NE and SE edges of Arenal's Crater C on 8 and 9 September. Tremors indicative of hydrothermal and magmatic activity were detected on 8 September. The report noted that seismic and fumarolic activity had been very low in the past three years; however steam plumes associated with heavy rains had been frequent. ... Read all
Thu, 31 Jan 2013, 17:49
The volcano had shown some increased seismicity at the end of December, but has calmed down again. ... Read all