Activity Increases at the Turrialba Volcano in Costa Rica.
28 APRIL 2016. Residents of the Turrialba canton in the province of Cartago woke up this morning to find a white steam column atop the summit of their eponymous volcano. According to an early morning press conference given by the Observatory of Volcanology and Seismology of Costa Rica (Spanish acronym: OVSICORI), seismic activity has been on the rise at the Turrialba Volcano since the early morning hours of Thursday.
The strongest tremors recorded by the seismographs and other instruments in place at the volcano have not been strong enough to be felt by local residents, unless they happen to be hiking near the crater or on the higher skirts. To this effect, the highest seismic reading was recorded at 5:30 am, and OVSICORI geologists have explained that the seismicity has continued since.
As previously reported by The Costa Rica Star, the OVSICORI detected a series of 75 small earthquakes recorded over 12 hours between Saturday night and Sunday morning the Turrialba and Irazu volcanoes. The strongest of these seismic disturbances were recorded at magnitude 3, which would be felt if someone was standing on a shallow epicenter.
It so happens that the seismicity recorded over the weekend is related to an earthquake cluster region and not directly associated with the Turrialba volcano.
OVSICORI scientists have pointed out that the current activity at the Turrialba is normal and not indicative of imminent eruptions. No external changes have been recorded by the geodesic monument, which is a magma detection instrument installed on the skirts of the colossus. This instrument connects to the Global Positioning System (GPS) satellite network and measures minuscule terrain changes for the purpose of assessing future eruptions.
The steam column atop the Turrialba can be explained by recent, heavy rainfall that creates phreatic (ground water) conditions at the central and western craters.
April 29, 2016. Turrialba , Costa Rica :
Source : Ovsicori , COSTA RICA STAR
Photo : Ticotimes .