Conceptual hydrodynamic model of the Pamukkale hydrothermal field, southwestern Turkey, based on hydrochemical and isotopic data
Conceptual hydrodynamic model of the Pamukkale hydrothermal field, southwestern Turkey, based on hydrochemical and isotopic data
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DOI：
10.1007/s10040-005-0001-4
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发表时间：
2006-02
影响因子：
2.8
通讯作者：
Cüneyt Dilsiz
中科院分区：
文献类型：
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作者：
Cüneyt Dilsiz
介绍了土耳其棉花堡热液田浅、深水沃茨水化学和同位素特征的研究结果，以便更好地了解水文循环。该气田可分为两个地下水子系统：Ca-HCO 3型冷水泉（10-12 °C）和Ca-HCO 3-SO 4型富CO2热沃茨（25-58 °C）。这些水类型的出现与该地区的地貌密切相关，强烈的构造运动形成了地垒和地堑构造。因此，定义了两个水文地质系统：与区域流动系统中大气降水的广泛和深层循环有关的深层地热系统，以及与通过沉积层的局部地下水流动有关的浅层系统。在较高海拔处降落的大气降水在浅层进入当地地下水系统，并流向深层地热系统。在从补给区到排放区的深对流循环中，冷水从软流圈侵入体获得热量，导致其上升。热沃茨上升到地表时与浅层地下水混合，造成其化学和同位素组成的变化。
The results of study on the hydrochemical and isotope characteristics of shallow and deep waters at Pamukkale hydrothermal field Turkey are described in order to obtain a better understanding of the hydrological circulation. The field can be grouped into two groundwater sub-systems; cold water springs of Ca–HCO3type (10–12 °C), and CO2-rich thermal waters of Ca–HCO3–SO4type (25–58 °C). The occurrence of these water types is closely related to the morphology of the region, where intense tectonism formed horst and graben structures. Hence, two hydrogeological systems were defined: a deep geothermal system which is related to extensive and deep circulation of meteoric water in the regional flow system, and a shallow system which is related to local groundwater flow through sedimentary strata. The meteoric water falling at higher elevations percolates to the local groundwater system at a shallow level and flows to the deep geothermal system. During a deep convection cycle from a recharge to discharge area, the cold water attains heat from the asthenospheric intrusions, causing it to ascend. Variations of chemical and isotopic composition of thermal waters result from their mixing with cool groundwater in a shallow aquifer during their ascent to the surface.