Geol Rund (submitted)īonis S, Salazar O (1973) The 19 eruptions of Volcán Fuego, Guatemala and some socio-economic considerations for the volcanologist. J Volcanol Geotherm Res 46:323–329Īndres RJ, Kyle PR, Chuan RL (1992) Sulfur dioxide, particle and elemental emissions from Mount Etna, Italy during July 1987. Bull Volcanol 52:113–117Īndres RJ, Rose WI, Kyle PR, deSilva S, Francis P, Gardeweg M, Moreno Roa H (1991) Excessive sulfur dioxide emissions from Chilean volcanoes. Michigan Technological University, Houghton, MI 167 ppĪndres RJ, Kyle PR, Stokes JB, Rose WI (1989) SO 2 from episode 48A eruption, Hawaii: Sulfur dioxide emissions from the episode 48A East Rift zone eruption of Kilauea volcano, Hawaii. A more complete record of SO 2 emission rates from these volcanoes could lead to a better understanding of their eruption mechanisms and reduce the impact of their future eruptions on Guatemalan society.Īndres RJ (1992) Remote sensing of volcanic H 2O, CO 2 and SO 2 emissions. Santiaguito and Pacaya, together, emit 6% of the total annual SO 2 emitted by continuously erupting volcanoes.Įven though SO 2 measurements at these volcanoes have been made infrequently and by different investigators, the collective data help to establish a useful baseline by which to judge future changes. On a global scale, these three volcanoes account for 1% of the annual global volcanic output of SO 2. At Pacaya, a continuously erupting basaltic volcano, recent SO 2 emission rate measurements support laboratory simulation studies of strombolian eruptions these studies indicate that the majority of gas escapes during eruptions and little gas escapes between eruptions.Īverage SO 2 emission rates over the last 20 years for Santiaguito, Fuego and Pacaya are 80, 160 and 260 Mg/d, respectively. At Fuego, a basaltic volcano currently in repose, SO 2 emission rate measurements are consistent with a high level magma body that is crystallizing and releasing volatiles. Varying shallow magma convection rates can explain the variations in SO 2 emission rates at Santiaguito. In particular, unerupted magma makes a major contribution to the measured SO 2 emission rates at Santiaguito, a continuously erupting dacitic volcanic dome. Measurements of the sulfur dioxide (SO 2) emission rate from three Guatemalan volcanoes provide data which are consistent with theoretical and laboratory studies of eruptive and shallow magma chamber processes.
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