The fumarolic gases at Deception Island (South Shetland Islands, Antarctica). Chemical changes and deposits related to seismic crisis of 1999

The compositional changes of fumarolic gases and chemical deposits that were generated in the vents of Deception Island fumaroles are studied. These chemical changes came out after the seismic crisis that happened during the summer of 1999. The most important characteristics of these changes are the...

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Autores principales: Caselli, A.T., dos Santos Afonso, M., Agusto, M.R.
Formato: JOUR
Materias:
Antarctica
Deception Island
Fumarole
Geochemistry
Monitoring
chemical composition
fumarole
gas flow
geochemistry
monitoring system
sulfur dioxide
volcanism
Arctic and Antarctic
South Shetland Islands
World
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00044822_v59_n2_p291_Caselli
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_00044822_v59_n2_p291_Caselli2023-10-03T13:57:55Z The fumarolic gases at Deception Island (South Shetland Islands, Antarctica). Chemical changes and deposits related to seismic crisis of 1999 Caselli, A.T. dos Santos Afonso, M. Agusto, M.R. Antarctica Deception Island Fumarole Geochemistry Monitoring chemical composition fumarole gas flow geochemistry monitoring system sulfur dioxide volcanism Antarctica Arctic and Antarctic Deception Island South Shetland Islands World The compositional changes of fumarolic gases and chemical deposits that were generated in the vents of Deception Island fumaroles are studied. These chemical changes came out after the seismic crisis that happened during the summer of 1999. The most important characteristics of these changes are the homogenization of the chemical composition of the gas flow of F2 and F3 fumaroles and the increase of sulfur dioxide content (SO2 was not detected in previous years). Also, as a consequence of the SO2 increase, deposits of elemental sulfur and framboidal pyrite were formed in the fumarole F3 vent. Sodium and magnesium chlorides deposits were produced in the fumaroles F2 and submerged near to the coast due to the increase of HCl in the fumarolic gases. These superficial manifestations could show a new input of magmatic gases associated with possible shallow intrusions. The relative importance of these superficial manifestations is analyzed and the possibility that can be used as volcanic precursor is discussed. © 2004 Asociación Geológica Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00044822_v59_n2_p291_Caselli
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Antarctica
Deception Island
Fumarole
Geochemistry
Monitoring
chemical composition
fumarole
gas flow
geochemistry
monitoring system
sulfur dioxide
volcanism
Antarctica
Arctic and Antarctic
Deception Island
South Shetland Islands
World
spellingShingle Antarctica
Deception Island
Fumarole
Geochemistry
Monitoring
chemical composition
fumarole
gas flow
geochemistry
monitoring system
sulfur dioxide
volcanism
Antarctica
Arctic and Antarctic
Deception Island
South Shetland Islands
World
Caselli, A.T.
dos Santos Afonso, M.
Agusto, M.R.
The fumarolic gases at Deception Island (South Shetland Islands, Antarctica). Chemical changes and deposits related to seismic crisis of 1999
topic_facet Antarctica
Deception Island
Fumarole
Geochemistry
Monitoring
chemical composition
fumarole
gas flow
geochemistry
monitoring system
sulfur dioxide
volcanism
Antarctica
Arctic and Antarctic
Deception Island
South Shetland Islands
World
description The compositional changes of fumarolic gases and chemical deposits that were generated in the vents of Deception Island fumaroles are studied. These chemical changes came out after the seismic crisis that happened during the summer of 1999. The most important characteristics of these changes are the homogenization of the chemical composition of the gas flow of F2 and F3 fumaroles and the increase of sulfur dioxide content (SO2 was not detected in previous years). Also, as a consequence of the SO2 increase, deposits of elemental sulfur and framboidal pyrite were formed in the fumarole F3 vent. Sodium and magnesium chlorides deposits were produced in the fumaroles F2 and submerged near to the coast due to the increase of HCl in the fumarolic gases. These superficial manifestations could show a new input of magmatic gases associated with possible shallow intrusions. The relative importance of these superficial manifestations is analyzed and the possibility that can be used as volcanic precursor is discussed. © 2004 Asociación Geológica Argentina.
format JOUR
author Caselli, A.T.
dos Santos Afonso, M.
Agusto, M.R.
author_facet Caselli, A.T.
dos Santos Afonso, M.
Agusto, M.R.
author_sort Caselli, A.T.
title The fumarolic gases at Deception Island (South Shetland Islands, Antarctica). Chemical changes and deposits related to seismic crisis of 1999
title_short The fumarolic gases at Deception Island (South Shetland Islands, Antarctica). Chemical changes and deposits related to seismic crisis of 1999
title_full The fumarolic gases at Deception Island (South Shetland Islands, Antarctica). Chemical changes and deposits related to seismic crisis of 1999
title_fullStr The fumarolic gases at Deception Island (South Shetland Islands, Antarctica). Chemical changes and deposits related to seismic crisis of 1999
title_full_unstemmed The fumarolic gases at Deception Island (South Shetland Islands, Antarctica). Chemical changes and deposits related to seismic crisis of 1999
title_sort fumarolic gases at deception island (south shetland islands, antarctica). chemical changes and deposits related to seismic crisis of 1999
url http://hdl.handle.net/20.500.12110/paper_00044822_v59_n2_p291_Caselli
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