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.C. 1998 : Methods and guidelines for effective model calibration . — U.S. Geological Survey Water-Resources Investigations Report , 98 – 4005 .91 p. Hill , M.C. , E.R. Banta , A

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The Euganean Geothermal Field (EGF) is the most important thermal field in northern Italy. It is located in the alluvial plain of the Veneto Region where approximately 17*106 m3 of thermal water with temperatures of 60–86 °C are exploited annually. A regional-scale conceptual model of the Euganean Geothermal System is proposed in this paper using the available hydrogeologic, geochemical and structural data for both the EGF and central Veneto. The thermal water is of meteoric origin and infiltrates approximately 80 km to the north of the EGF in the Veneto Prealps. The water flows to the south in a Mesozoic limestone and dolomite reservoir reaching a depth of approximately 3,000 m and a temperature of approximately 100 °C due to the normal geothermal gradient. The regional Schio-Vicenza fault system and its highly permeable damage zone act as a preferential path for fluid migration in the subsurface. In the EGF area, a geologic structure formed by the interaction of different segments of the fault system increases the local fracturing and the permeability favoring the upwelling of the thermal waters. Numerical simulations are performed to validate the proposed conceptual model using a finite difference code that simulates thermal energy transport in hydrothermal systems. A specific configuration of thermal conductivity and permeability for the formations involved in the thermal system is obtained after calibration of these parameters. This set of parameters is verified in a long-term simulation (55,100 years) obtaining a 60–70 °C plume in the EGF area. The modeled temperatures approach the measured temperatures of 60–86 °C, demonstrating that this conceptual model can be realistically simulated.

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calibration code? A case study from Italy: The Acque Albule Plain model (Rome) . — IAHS–AISH Publication , 341 , pp. 51 – 56 . La Vigna , F. , V. Carucci , I. Mariani , L. Minelli , F

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Abstract

The purpose of this work was to characterize the flow system of the area by constructing a 3D steady-state model, which is able to describe the zone budget and potential levels of the flow system, and also be able to manage the different hydrostratigraphic units within different geologic zones. In this study hydrogeologic and hydraulics data of more than 100 observation and abstraction wells and springs, recorded over decades, were used and the first calibration results are presented. The VISUAL MODFLOW PRO software was applied to simulate the model.

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. Geol., Budapest 27 3 16 Johnson, M.C., M.J. Rutherford 1988: Experimental calibration of the aluminium

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. Ronen, M. Hattori, C. Corbett 1994: Seismic-guided estimation of log properties, Part 1: A data-driven interpretation methodology. The Leading Edge, Vol. 13/5, pp. 305-315; Part 2: Using artificial neural networks for nonlinear attribute calibration. The

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. 60 985 993 Ferry, J.M., F.S. Spear 1978: Experimental calibration of the partitioning of Fe and Mg between biotite and garnet. Contrib. Mineral

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719 . S.C. Cande D.V. Kent 1995 Revised calibration of the geomagnetic polarity timescale for the

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Calibration of the calcite-water oxygen-isotope geothermometer at Devils Hole, Nevada, a natural laboratory Geochimica et Cosmochimica Acta 71/ 16 3948 3957

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13 283 292 . Buck , C.E. , J.A. Christen , G.N. James 1999 : BCal: an on-line Bayesian radiocarbon calibration tool . — Internet Archaeology, 7 ( http

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