********************************************************************** From: Eliecer Duarte Gonzalez <eduarte@xxxxxxxxx> ********************************************************************** Poas Volcano: Small phreatic explosion and its relationship to the 6.2 Cinchona earthquake in Costa Rica. On Monday 12th Poas Volcano produced a shy phreatic explosion, confined to the center of the lake. Geol. Jorge Brenes reported and photographed such event while carrying out fieldwork along with a team of foreign researchers. Spanish details at: http://www.ovsicori.una.ac.cr/informes_prensa/2009/pequenaerupcionfreaticapoas12enero2009.pdf More intriguing is the fact that such activity occurred after the fatal Cinchona earthquake felt on Thursday, January 08, 2009 at 19:21 (GMT) 13:21 local. Twenty people killed and a dozen others disappeared is the result of a local faulting event. Epicenter is located some 6 km E of the volcano probably disturbing the balance of an already fractured and shallow hydrothermal system. Several American and Costa Rican volcano researcher led by T. Fischer were working at the bottom of the crater when the quake hit. No body was hurt although there were rockslides falling inside the crater area. Spanish details about the quake at: http://www.ovsicori.una.ac.cr/informes_prensa/2009/InfCampoTerremotoCinchona.pdf Photos and other documents related at: http://www.ovsicori.una.ac.cr/pdf/8fotoepicentroTerremotoCinchona.pdf ============================================================== To unsubscribe from the volcano list, send the message: signoff volcano to: listserv@xxxxxxx, or write to: volcano-request@xxxxxxxx To contribute to the volcano list, send your message to: volcano@xxxxxxxx Please do not send attachments. ==============================================================
