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Authors: Meza Maldonado, Luisa Fernanda* 
Inguaggiato, Salvatore* 
Jaramillo, Marco Tulio* 
Valencia, Gustavo Garzón* 
Mazot, Agnes* 
Title: Volatiles and energy released by Puracé volcano
Journal: Bulletin of Volcanology 
Series/Report no.: /79 (2017)
Issue Date: 14-Nov-2017
DOI: 10.1007/s00445-017-1168-y
Abstract: Total CO2 output of Puracé volcano (Colombia) was estimated on the basis of fluids discharged by fumaroles, soil gases, and dissolved carbon species in the aquifer. The soil CO2 emission was computed from a field survey of 512 points of CO2 soil flux measurements at the main degassing areas of Puracé volcano. The CO2 flux from Puracé’s plume was estimated using an indirect method, that used the SO2 plume flux and CO2/SO2 ratio of the main high temperature fumarole. The total output of CO2 was estimated at ≅ 1500 t/ day. The main contribution of CO2 comes from the plume (summit degassing) and from soil degassing that emit 673 and 812 t/day, respectively. The contributions of summit and soil degassing areas are comparable, indicating an intermediate degassing style partitioned between closed and open conduit systems. The estimated water vapor discharge (as derived from the chemical composition of the fumaroles, the H2O/ CO2 ratio, and the SO2 plume flux) allowed calculation of the total thermal energy (fumarolic, soil degassing, and aquifer) released
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