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Latest news from Arenal volcano:
miércoles, sep 18, 2013
OVSICORI mencionó que desprendimientos con ruidos del retumbo han aumentado en el volcán en las últimas semanas. Esto podría sugerir que el volcán ha comenzado a despertar de sus 3 años de letargo. [Leer más]
jueves, sep 12, 2013
OVSICORI-UNA informó que penachos compuesta principalmente por vapor de agua desde los bordes del cráter C del Arenal 8 y 9 de septiembre NE y SE levantó. Temblores indicativos de actividad hidrotermal y magmática se detectaron el 8 de septiembre. ... [Leer más]
 

Arenal volcano

Stratovolcano 1657 m / 5,436 ft
Costa Rica, 10.46°N / -84.7°W
Current status: normal or dormant (1 out of 5)
Arenal webcams / datos en tiempo real | Reports
Arenal volcano books | Tours
Last update: 18 sep 2013
Typical eruption style: Peligro de explosión. Cerca de actividad estromboliana continua, ocasionales eventos explosivos y la lava fluye.
Erupciones del volcán Arenal: 1968-2011, 1968 (major explosion), 1922, 1915(?), 1750, 1530, around 1350 (large, sub-Plinian eruption)Arenal volcano seen from Rio CalienteNo hay terremotos recientes
Fecha / HoraRevista / ProfundidadDistanciaUbicación
Arenal, a major tourist attraction in Costa Rica, is one of the most active volcanoes of Central America. Since a major eruption in 1968, it has been in near-continuous activity building a lava dome and displaying mild explosive activity from the summit crater.

Background:

Volcán Arenal, a beautiful, 1657-m high conical andesitic stratovolcano near Lake Arena, is the youngest and one of the most active stratovolcano in Costa Rica. It is famous for a large explosive eruption in 1968 that killed several people and threw incandescent bombs to 5 km distance from the vent.
Arenal lies along a volcanic chain where activity has migrated to the NW over the past 2 million years, from the late-Pleistocene Los Perdidos lava domes through the Pleistocene-to-Holocene Chato volcano, which contains a 500-m-wide, lake-filled summit crater. The earliest known eruptions of Arenal took place about 7000 years ago, and it was active simulataneously with Cerro Chato volcano until the activity of Chato ended about 3500 years ago.
Growth of Arenal has been characterized by periodic major explosive eruptions at several-hundred-year intervals and periods of lava effusion that armor the cone. Arenal's most recent eruptive period began with a major explosive eruption in 1968. Continuous explosive activity accompanied by slow lava effusion and the occasional emission of pyroclastic flows has occurred since then from vents at the summit and on the upper western flank.
Source: GVP, Smithsonian Institution


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