Abstract
Three points raised in the paper by Tedesco and Sabroux (1987) are dealt with. (1) The inconsistency between the water partial pressure calculated by Tedesco and Sabroux (1987) and saturation pressure is due to the improper use of the water-gas-shift reaction as a geothermometer. In fact Tedesco and Sabroux (1987) do not take into account the distribution of gas species between the coexisting vapour and liquid phases. (2) The depth of the “steam reservoir” is evaluated by Tedesco and Sabroux (1987) in too simplistic a way. This matter should be treated with greater care owing to the high social impact of any consideration on the Phlegraean Fields system. (3) The reliability of carbon monoxide determination at the concentration level encountered at Solfatara depends on the collection method rather than on the gas-chromatographic technique.
Similar content being viewed by others
References
Barin I, Knacke O (1973) Thermodynamic properties of inorganic substances. Springer, Berlin Heidelberg New York, 921 p
Berrino G, Corrado G, Luongo G, Toro B (1984) Ground deformation and gravity changes accompanying the 1982 Pozzuoli uplift. Bull Volcanol 47:175–185
Bertrami R, Cioni R, Corazza E, D'Amore F, Marini L (1985) Carbon monoxide in geothermal gases. Reservoir temperature calculations at Larderello (Italy). Geoth Res Council Trans 9:299–303
Cioni R, Corazza E, Marini L (1984) The gas/steam ratio as indicator of heat transfer at the Solfatara fumaroles, Phlegraean Fields (Italy). Bull Volcanol 47:295–302
Giggenbach (1980) Geothermal gas equilibria. Geochim Cosmochim Acta 44:2021–2032
Marinelli G (1976) Geothermie et theories metallogenetiques. Ann Mines Belg 12:1067–1074
Naumov GB, Ryzhenko BN, Khodakoysky IL (1971) Handbook of thermodynamic data, Atomizdat, Moskow, 240 pp
Rosi M, Santacroce R (1984) Volcanic hazard assessment in the Phlegraean Fields: a contribution based on stratigraphic and historical data. Bull Volcanol 47:359–370
Tedesco D, Sabroux JC (1987) The determination of deep temperatures by means of the CO−CO2−H2−H2O geothermometer: an example using fumaroles in the Campi Flegrei, Italy. Bull Volcanol 49:381–387
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Cioni, R., Marini, L. The determination of deep temperatures by means of the CO-CO2-H2-H2O geothermometer: an example using fumaroles in the Campi Flegrei, Italy. A comment. Bull Volcanol 53, 67–69 (1990). https://doi.org/10.1007/BF00680321
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00680321