Recent eruptive activity from Lascar Volcano ( 2006).

AGUILERA F., MEDINA, E., VIRAMONTE, J., GUZMÁN, K., BECCHIO, R., DELGADO, H., ARNOSIO, M.

Antofagasta, Chile

Congreso; X Congreso Geológico Chileno; 2006

Universidad Católica del Norte

Lascar Volcano underwent a new eruptive cycle between 18 and 23 April 2006. These recent eruptions can be indicated as unusual activity, considering its characteristics, frequency and time of duration. A similar behaviour not had been observed since February–March 1995, when in a period of 13 days diverse explosions that reached up 3 km of height over the crater were accompanied by subterranean and explosion noises (GVN 20:03). Besides of this, only eleven months have elapsed after the last eruption in May 2005, a very brief interval of time considering that since 1995 therecurrence of eruptions with eruptive columns >5,000 m above crater was of 5 years. In this work are presented field and satellite data from April 2006 eruptions with the objective to characterize this eruptive period.