Fluid geochemistry of Nisyros island, Dodecanese, Greece
Identifieur interne : 000372 ( Main/Exploration ); précédent : 000371; suivant : 000373Fluid geochemistry of Nisyros island, Dodecanese, Greece
Auteurs : G. Chiodini [Italie] ; R. Cioni [Italie] ; C. Leonis [Grèce] ; L. Marini [Italie] ; B. Raco [Italie]Source :
- Journal of Volcanology and Geothermal Research [ 0377-0273 ] ; 1993.
Descripteurs français
- Pascal (Inist)
- Chlore, Circulation hydrothermale, Cratère, Départ gaz, Eau mer, Eau souterraine, Enthalpie, Eruption, Explosion, Fumerolle, Grèce, Hydrochimie, Ile Nisyros, Iles Dodécanèse, Modèle, Mélange, Nappe eau, Pression fluide, Prévision, Puits eau, Risque volcanique, Salinité, Source thermale, Système géothermique, Température, Vapeur eau.
- Wicri :
- geographic : Grèce.
- topic : Chlore, Eau souterraine.
English descriptors
- KwdEn :
- Acetate solution, Acid gases, Acta, Analytical concentration, Analytical concentrations, Aqueous solution, Aquifer, Binary mixtures, Boreholes, Caldera, Caldera fault, Carbon monoxide, Chemical characteristics, Chiodini, Chloride concentration, Chloride content, Chloride method, Cioni, Coast line, Cold waters, Compositional pyramid, Conceptual hydrogeochemical model, Deep aquifer, Deep water, Depth interval, Discharge vapors, Distribution coefficient, Dodecanese, Enthalpy, Equilibration zone, Eruption, Formation temperatures, Fumaroles, Fumarolic, Fumarolic discharges, Fumarolic effluents, Fumarolic fluids, Fumarolic vents, Further details, Gases equilibrate, Geobarometric evaluations, Geochemical survey, Geotermica italiana, Geothermal, Geothermal energy research, Geothermal exploration, Geothermal systems, Geothermal water, Geothermal wells, Giggenbach, Gorceix, Greece, Hydrothermal, Hydrothermal eruption, Hydrothermal eruptions, Hydrothermal systems, Ionic salinity, Lakki, Lava flows, Liquid phase, Liquid phases, Liquid water, Local groundwaters, Lofos, Lofos dome, Marini, Natural waters, Nisyros, Nisyros island, Original temperature, Pali, Panaghias kiras, Partial pressure, Permeable zones, Preliminary test, Present hazard, Pressure method, Productive interval, Reasonable assumption, Salinity, Second hypothesis, Shallow aquifer, Shallow borehole, Shallow boreholes, Single step, Southern coasts, Southern half, Steam fraction, Steam phase, Steam separation, Steam tables, Stephanos crater, Summit caldera, Temperature values, Thermal spring pali, Thermal springs, Thermal waters, Thermal woters, Total discharge, Total pressure, Triangular diagrams, Vapor phase, Volcanic gases, aquifers, chlorine, craters, degassing, enthalpy, eruptions, explosions, fluid pressure, fumaroles, geothermal systems, ground water, hot springs, hydrochemistry, melange, models, prediction, salinity, sea water, temperature, volcanic hazards, water vapor, water wells.
- Teeft :
- Acetate solution, Acid gases, Acta, Analytical concentration, Analytical concentrations, Aqueous solution, Aquifer, Binary mixtures, Boreholes, Caldera, Caldera fault, Carbon monoxide, Chemical characteristics, Chiodini, Chloride concentration, Chloride content, Chloride method, Cioni, Coast line, Cold waters, Compositional pyramid, Conceptual hydrogeochemical model, Deep aquifer, Deep water, Depth interval, Discharge vapors, Distribution coefficient, Enthalpy, Equilibration zone, Eruption, Formation temperatures, Fumaroles, Fumarolic, Fumarolic discharges, Fumarolic effluents, Fumarolic fluids, Fumarolic vents, Further details, Gases equilibrate, Geobarometric evaluations, Geochemical survey, Geotermica italiana, Geothermal, Geothermal energy research, Geothermal exploration, Geothermal systems, Geothermal water, Geothermal wells, Giggenbach, Gorceix, Hydrothermal, Hydrothermal eruption, Hydrothermal eruptions, Hydrothermal systems, Ionic salinity, Lakki, Lava flows, Liquid phase, Liquid phases, Liquid water, Local groundwaters, Lofos, Lofos dome, Marini, Natural waters, Nisyros, Nisyros island, Original temperature, Pali, Panaghias kiras, Partial pressure, Permeable zones, Preliminary test, Present hazard, Pressure method, Productive interval, Reasonable assumption, Salinity, Second hypothesis, Shallow aquifer, Shallow borehole, Shallow boreholes, Single step, Southern coasts, Southern half, Steam fraction, Steam phase, Steam separation, Steam tables, Stephanos crater, Summit caldera, Temperature values, Thermal spring pali, Thermal springs, Thermal waters, Thermal woters, Total discharge, Total pressure, Triangular diagrams, Vapor phase, Volcanic gases.
Abstract
Abstract: Two distinct hydrothermal aquifers are present beneath the Lakki plain: (a) a deep aquifer, characterized by temperatures higher than 290°C and chloride-rich fluids: and (b) a shallow aquifer, with a chloride content close to that of sea water and temperatures in the range 170–255°C. The vapor phase boiled from the shallow aquifer feeds the fumarolic vents in the southern half of the Lakki plain and its liquid phase flows northeast and southwest, contributing to the thermal springs located along the northern and southern coasts of the island. This conceptual hydrogeochemical model of Nisyros Island can be used to reconstruct past hydrothermal eruptions and to estimate the risk of such events happening again in the future.
Url:
DOI: 10.1016/0377-0273(93)90052-S
Affiliations:
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Le document en format XML
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Acetate solution</term>
<term>Acid gases</term>
<term>Acta</term>
<term>Analytical concentration</term>
<term>Analytical concentrations</term>
<term>Aqueous solution</term>
<term>Aquifer</term>
<term>Binary mixtures</term>
<term>Boreholes</term>
<term>Caldera</term>
<term>Caldera fault</term>
<term>Carbon monoxide</term>
<term>Chemical characteristics</term>
<term>Chiodini</term>
<term>Chloride concentration</term>
<term>Chloride content</term>
<term>Chloride method</term>
<term>Cioni</term>
<term>Coast line</term>
<term>Cold waters</term>
<term>Compositional pyramid</term>
<term>Conceptual hydrogeochemical model</term>
<term>Deep aquifer</term>
<term>Deep water</term>
<term>Depth interval</term>
<term>Discharge vapors</term>
<term>Distribution coefficient</term>
<term>Dodecanese</term>
<term>Enthalpy</term>
<term>Equilibration zone</term>
<term>Eruption</term>
<term>Formation temperatures</term>
<term>Fumaroles</term>
<term>Fumarolic</term>
<term>Fumarolic discharges</term>
<term>Fumarolic effluents</term>
<term>Fumarolic fluids</term>
<term>Fumarolic vents</term>
<term>Further details</term>
<term>Gases equilibrate</term>
<term>Geobarometric evaluations</term>
<term>Geochemical survey</term>
<term>Geotermica italiana</term>
<term>Geothermal</term>
<term>Geothermal energy research</term>
<term>Geothermal exploration</term>
<term>Geothermal systems</term>
<term>Geothermal water</term>
<term>Geothermal wells</term>
<term>Giggenbach</term>
<term>Gorceix</term>
<term>Greece</term>
<term>Hydrothermal</term>
<term>Hydrothermal eruption</term>
<term>Hydrothermal eruptions</term>
<term>Hydrothermal systems</term>
<term>Ionic salinity</term>
<term>Lakki</term>
<term>Lava flows</term>
<term>Liquid phase</term>
<term>Liquid phases</term>
<term>Liquid water</term>
<term>Local groundwaters</term>
<term>Lofos</term>
<term>Lofos dome</term>
<term>Marini</term>
<term>Natural waters</term>
<term>Nisyros</term>
<term>Nisyros island</term>
<term>Original temperature</term>
<term>Pali</term>
<term>Panaghias kiras</term>
<term>Partial pressure</term>
<term>Permeable zones</term>
<term>Preliminary test</term>
<term>Present hazard</term>
<term>Pressure method</term>
<term>Productive interval</term>
<term>Reasonable assumption</term>
<term>Salinity</term>
<term>Second hypothesis</term>
<term>Shallow aquifer</term>
<term>Shallow borehole</term>
<term>Shallow boreholes</term>
<term>Single step</term>
<term>Southern coasts</term>
<term>Southern half</term>
<term>Steam fraction</term>
<term>Steam phase</term>
<term>Steam separation</term>
<term>Steam tables</term>
<term>Stephanos crater</term>
<term>Summit caldera</term>
<term>Temperature values</term>
<term>Thermal spring pali</term>
<term>Thermal springs</term>
<term>Thermal waters</term>
<term>Thermal woters</term>
<term>Total discharge</term>
<term>Total pressure</term>
<term>Triangular diagrams</term>
<term>Vapor phase</term>
<term>Volcanic gases</term>
<term>aquifers</term>
<term>chlorine</term>
<term>craters</term>
<term>degassing</term>
<term>enthalpy</term>
<term>eruptions</term>
<term>explosions</term>
<term>fluid pressure</term>
<term>fumaroles</term>
<term>geothermal systems</term>
<term>ground water</term>
<term>hot springs</term>
<term>hydrochemistry</term>
<term>melange</term>
<term>models</term>
<term>prediction</term>
<term>salinity</term>
<term>sea water</term>
<term>temperature</term>
<term>volcanic hazards</term>
<term>water vapor</term>
<term>water wells</term>
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<keywords scheme="Pascal" xml:lang="fr"><term>Chlore</term>
<term>Circulation hydrothermale</term>
<term>Cratère</term>
<term>Départ gaz</term>
<term>Eau mer</term>
<term>Eau souterraine</term>
<term>Enthalpie</term>
<term>Eruption</term>
<term>Explosion</term>
<term>Fumerolle</term>
<term>Grèce</term>
<term>Hydrochimie</term>
<term>Ile Nisyros</term>
<term>Iles Dodécanèse</term>
<term>Modèle</term>
<term>Mélange</term>
<term>Nappe eau</term>
<term>Pression fluide</term>
<term>Prévision</term>
<term>Puits eau</term>
<term>Risque volcanique</term>
<term>Salinité</term>
<term>Source thermale</term>
<term>Système géothermique</term>
<term>Température</term>
<term>Vapeur eau</term>
</keywords>
<keywords scheme="Teeft" xml:lang="en"><term>Acetate solution</term>
<term>Acid gases</term>
<term>Acta</term>
<term>Analytical concentration</term>
<term>Analytical concentrations</term>
<term>Aqueous solution</term>
<term>Aquifer</term>
<term>Binary mixtures</term>
<term>Boreholes</term>
<term>Caldera</term>
<term>Caldera fault</term>
<term>Carbon monoxide</term>
<term>Chemical characteristics</term>
<term>Chiodini</term>
<term>Chloride concentration</term>
<term>Chloride content</term>
<term>Chloride method</term>
<term>Cioni</term>
<term>Coast line</term>
<term>Cold waters</term>
<term>Compositional pyramid</term>
<term>Conceptual hydrogeochemical model</term>
<term>Deep aquifer</term>
<term>Deep water</term>
<term>Depth interval</term>
<term>Discharge vapors</term>
<term>Distribution coefficient</term>
<term>Enthalpy</term>
<term>Equilibration zone</term>
<term>Eruption</term>
<term>Formation temperatures</term>
<term>Fumaroles</term>
<term>Fumarolic</term>
<term>Fumarolic discharges</term>
<term>Fumarolic effluents</term>
<term>Fumarolic fluids</term>
<term>Fumarolic vents</term>
<term>Further details</term>
<term>Gases equilibrate</term>
<term>Geobarometric evaluations</term>
<term>Geochemical survey</term>
<term>Geotermica italiana</term>
<term>Geothermal</term>
<term>Geothermal energy research</term>
<term>Geothermal exploration</term>
<term>Geothermal systems</term>
<term>Geothermal water</term>
<term>Geothermal wells</term>
<term>Giggenbach</term>
<term>Gorceix</term>
<term>Hydrothermal</term>
<term>Hydrothermal eruption</term>
<term>Hydrothermal eruptions</term>
<term>Hydrothermal systems</term>
<term>Ionic salinity</term>
<term>Lakki</term>
<term>Lava flows</term>
<term>Liquid phase</term>
<term>Liquid phases</term>
<term>Liquid water</term>
<term>Local groundwaters</term>
<term>Lofos</term>
<term>Lofos dome</term>
<term>Marini</term>
<term>Natural waters</term>
<term>Nisyros</term>
<term>Nisyros island</term>
<term>Original temperature</term>
<term>Pali</term>
<term>Panaghias kiras</term>
<term>Partial pressure</term>
<term>Permeable zones</term>
<term>Preliminary test</term>
<term>Present hazard</term>
<term>Pressure method</term>
<term>Productive interval</term>
<term>Reasonable assumption</term>
<term>Salinity</term>
<term>Second hypothesis</term>
<term>Shallow aquifer</term>
<term>Shallow borehole</term>
<term>Shallow boreholes</term>
<term>Single step</term>
<term>Southern coasts</term>
<term>Southern half</term>
<term>Steam fraction</term>
<term>Steam phase</term>
<term>Steam separation</term>
<term>Steam tables</term>
<term>Stephanos crater</term>
<term>Summit caldera</term>
<term>Temperature values</term>
<term>Thermal spring pali</term>
<term>Thermal springs</term>
<term>Thermal waters</term>
<term>Thermal woters</term>
<term>Total discharge</term>
<term>Total pressure</term>
<term>Triangular diagrams</term>
<term>Vapor phase</term>
<term>Volcanic gases</term>
</keywords>
<keywords scheme="Wicri" type="geographic" xml:lang="fr"><term>Grèce</term>
</keywords>
<keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Chlore</term>
<term>Eau souterraine</term>
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<front><div type="abstract" xml:lang="en">Abstract: Two distinct hydrothermal aquifers are present beneath the Lakki plain: (a) a deep aquifer, characterized by temperatures higher than 290°C and chloride-rich fluids: and (b) a shallow aquifer, with a chloride content close to that of sea water and temperatures in the range 170–255°C. The vapor phase boiled from the shallow aquifer feeds the fumarolic vents in the southern half of the Lakki plain and its liquid phase flows northeast and southwest, contributing to the thermal springs located along the northern and southern coasts of the island. This conceptual hydrogeochemical model of Nisyros Island can be used to reconstruct past hydrothermal eruptions and to estimate the risk of such events happening again in the future.</div>
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