Geothermal Resources and Technology: Introduction

Blair, Peter D.

doi:10.1002/9781118985960.meh424

Cited by 1 publication

(3 citation statements)

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“…T (m 2 /s) = 2.39 × SC 1.07 . (10) These equations [62,63] were considered since they were developed, respectively, for a carbonate thermal aquifer in Italy and dolomite aquifers in Slovenia. SC was calculated for steps showing well efficiency higher than 50%, and an average value of SC was used to determine T.…”

Section: Hydrogeological Investigationsmentioning

confidence: 99%

“…There are several classifications for geothermal resources based on their geological or engineering characteristics [8][9][10]. According to [10], there are three main types of geothermal resources based on their geological characteristics and the heat transfer mechanism: (i) hydrothermal convection resources, (ii) hot igneous resources, and (iii) conductiondominated resources. When the underlying mechanism of heat transfer involves the convection of water in a liquid or vapour state, it is considered a hydrothermal system.…”

Section: Introductionmentioning

confidence: 99%

“…Hydrothermal systems include a recharge area where meteoric water infiltrates into the subsurface, a geothermal aquifer where water gets heated by terrestrial heat flow, and a discharge area where the heated water flows out in the form of natural thermal springs [7,11]. The outflow of thermal waters is generally driven by favourable structural conditions that increase the local permeability [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

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Multidisciplinary Research of Thermal Springs Area in Topusko (Croatia)

et al. 2023

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Topusko is the second warmest natural thermal water spring area in Croatia, located at the southwest edge of the Pannonian Basin System. Due to favourable geothermal properties, these waters have been used for heating and health and recreational tourism since the 1980s. Thermal springs with temperatures up to 50 °C are the final part of an intermediate-scale hydrothermal system. However, systematic research on the Topusko spring area has not been conducted to lay the foundation for sustainable resource utilisation. Multidisciplinary research including the hydrogeochemical characterisation of naturally emerging thermal water, an electrical resistivity tomography (ERT) investigation conducted to reconstruct the subsurface geology, and hydrogeological parametrisation of the geothermal aquifer was carried out to refine the existing local conceptual model. The results show Ca-HCO3 facies of Topusko thermal waters, which get heated in a Mesozoic carbonate aquifer. The water equilibrium temperature in the geothermal aquifer is estimated to be 78 °C based on the SiO2-quartz geothermometer. The fault damage zone, which enables the upwelling of thermal water, was identified by ERT investigations. The transmissivity values of the aquifer derived from the results of step-drawdown tests range from 1.8 × 10−2 to 2.3 × 10−2 m2/s. Further multidisciplinary research is necessary to improve the existing conceptual model of the Topusko hydrothermal system.

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Section: Hydrogeological Investigationsmentioning

confidence: 99%