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Authors: Pecoraino, G.*
Brusca, L.*
D'Alessandro, W.*
Giammanco, S.*
Inguaggiato, S.*
Longo, M.*
Title: Total CO2 output from Ischia Island volcano (Italy)
Title of journal: Geochemical Journal
Series/Report no.: 39(2005)
Publisher: Terrapub
Issue Date: 2005
Keywords: Ischia
CO2 output
soil CO2
dissolved CO2
Abstract: The total amount of CO2 released at Ischia Island has been estimated from soil gas flux measurements and from chemical composition of the gases released by fumaroles or dissolved in groundwaters. The preliminary results indicate an overall CO2 output of about 15 kg s–1 from the entire island (46 km2). The main contribution to the total output from diffuse soil degassing is about 14.8 kg s–1, followed by dissolved CO2 of about 0.3 kg s–1. The contribution of fumaroles to the total output was found to be negligible (about 0.03 kg s–1). Ischia’s output, although being considerably less than that of open conduit volcanoes, is higher than many other volcanic systems, especially those related to volcanic arcs. The recent tensile tectonic regime of the area allows probably an easier upflow of CO2 from the mantle sustaining the diffuse degassing of the island.
Appears in Collections:04.02.01. Geochemical exploration
Papers Published / Papers in press

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