Systematic hydrogeological study of a hypothermal spring (S. Cesarea Terme, Apulia), Italy

Calò, G.; Tinelli, Roccaldo

doi:10.1016/0022-1694(94)02565-s

Cited by 13 publications

(5 citation statements)

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“…As demonstrated by Calò and Tinelli (1995), rising sulfidic waters can reach the surface through deep tectonic fractures and karst flowpaths, generating bell-shaped upwelling of groundwater. Nevertheless, their behavior is extremely sensitive to both (1) modest water head variations (tidal fluctuations, increase of colder freshwater thickness), and (2) seawater conditions (smooth, rough, long-term rough water).…”

Section: Discussionmentioning

confidence: 99%

“…Nevertheless, their behavior is extremely sensitive to both (1) modest water head variations (tidal fluctuations, increase of colder freshwater thickness), and (2) seawater conditions (smooth, rough, long-term rough water). Hydrogeological monitoring of thermal water flowpaths helped to assert the important influence of sulfidic fluids on the SCT karst system, especially during low and calm seawater conditions, showing evident zonation (Calò and Tinelli 1995). Rough sea conditions create different hydrodynamic situations (see Fig.…”

Section: Discussionmentioning

confidence: 99%

“…Rough sea conditions create different hydrodynamic situations (see Fig. 9 in Calò and Tinelli 1995), inducing the loss of water zonation, with more homogeneous values of temperature and salinity. The concentration of hydrogen sulfide is variable as a consequence of tides (Visintin 1945).…”

Section: Discussionmentioning

confidence: 99%

“…Several hypotheses have been presented for the origin of the sulfidic springs. In one scenario, elevated temperatures, several degrees higher than in shallow groundwater, are due to exothermic reactions of sulfate in the seawater interacting with organic matter in the Miocene calcarenites (Zezza 1980;Calò et al 1983;Calò and Tinelli 1995). According to researchers, thermal waters could derive from connate fluids, confined at depth and associated with hydrocarbons in the Otranto Channel, rising along fault systems in the Dinaric foredeep bedrock, with elevated temperatures due to the regional geothermal gradient (Maggiore and Pagliarulo 2003).…”

Section: Geological Settingmentioning

confidence: 99%

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Hydrogeology and geochemistry of the sulfur karst springs at Santa Cesarea Terme (Apulia, southern Italy)

et al. 2020

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This work describes the geochemical and hydrogeological characteristics of Santa Cesarea Terme, an active sulfuric acid speleogenetic system located along the Adriatic coastline (Apulia, southern Italy). It represents a very peculiar site, where rising thermal and acidic waters mix with seawater creating undersaturated solutions with respect to CaCO3, able to dissolve and corrode limestone and create caves. The Santa Cesarea Terme system is composed of four caves: Fetida, Sulfurea, Gattulla, and Solfatara. Hypogene morphologies and abundant deposits of native sulfur (especially in Gattulla Cave) and sulfate minerals are present in these caves. Fetida and Gattulla caves were investigated primarily because they are easily accessible throughout the whole year through artificial entrances, the other caves being reachable only from the sea. Geochemical analysis of water, monitoring of cave atmosphere, and measurement of the stable isotopes of S, O, and H helped to identify the main processes occurring in this complex cave system. In particular, changes in Ba2+ and Sr2+ concentration allowed for the identification of two main domains of influence, characterized by marine and rising acidic waters.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Geological Settingmentioning

confidence: 99%

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Hydrogeology and geochemistry of the sulfur karst springs at Santa Cesarea Terme (Apulia, southern Italy)

et al. 2020

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“…The study of the spatial distribution of water temperature is a useful device for detecting preferential flow areas, deep circulation and local flow systems, by considering just the temperature of the pumped water, or by studying the temperature profiles in wells (Kayane et al, 1985). Groundwater temperature has even identified the factors that control processes of marine intrusion in coastal areas where the saline and fresh water have a different thermal gradient (Tulipano and Fidelibus, 1988;Caló and Tinelli, 1995;Taniguchi, 2000). Mass transport processes also play an important role in the highly variable, geological, hydrogeological and geochemical setting.…”

Section: Introductionmentioning

confidence: 99%

Water temperature and conductivity variability as indicators of groundwater behaviour in complex aquifer systems in the south‐east of Spain

Molina

Vallejos

Pulido−Bosch

et al. 2002

Hydrological Processes

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Abstract:Groundwater temperature and electrical conductivity logs were applied in this study to gain an understanding of the hydrogeological behaviour of a complex system. This system, compartmentalized by a large number of fractures, which may even cause geothermal anomalies, is that of the Campo de Dalías in the south-east of the Iberian Peninsula. In addition to this complexity one must consider the different levels with aquifer properties and their varying lithologies, which in some cases are in direct contact with the sea. Vertical sections based upon the various logs allow lateral correlation to be made between the anomalies detected, and provide information on the existence of both ascending and descending vertical flows, and the inflow of sea water into the system. Analysis of environmental isotopes ( 18 O and D) indicate the areas of recharge with the greatest flow velocity. No seasonal variation in the isotopes was observed, which suggests that the residence time of the groundwater in the aquifer is several years. Radiocarbon dating gave estimates of generally long residence times, although in some sectors it is possible to detect the current recharge based on its tritium content, from rainwater infiltration or seawater intrusion.

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The Coastal Sulfuric Acid Cave System of Santa Cesarea Terme (Southern Italy)

D’Angeli

Vattano

Parise

et al. 2017

Hypogene Karst Regions and Caves of the World

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Santa Cesarea Terme in Salento is the only area in which hypogenic caves have been recognized in the Apulia region. In this spa area, the rising of sulfidic thermal waters that mix with both recent fresh infiltration waters and coastal salt water has formed four active sulfuric acid speleogenesis (SAS) caves. These caves are characterized by the typical set of sulfuric acid meso-and micromorphologies, and also by the presence of both gypsum and native sulfur. In all caves, biofilms are visible in the sulfidic thermal waters and on the cave walls.

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Systematic hydrogeological study of a hypothermal spring (S. Cesarea Terme, Apulia), Italy

Cited by 13 publications

References 0 publications

Hydrogeology and geochemistry of the sulfur karst springs at Santa Cesarea Terme (Apulia, southern Italy)

Hydrogeology and geochemistry of the sulfur karst springs at Santa Cesarea Terme (Apulia, southern Italy)

Water temperature and conductivity variability as indicators of groundwater behaviour in complex aquifer systems in the south‐east of Spain

The Coastal Sulfuric Acid Cave System of Santa Cesarea Terme (Southern Italy)

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