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首页> 外文期刊>Journal of Volcanology and Geothermal Research >Isotope and hydrochemical assessment of the Samothraki Island geothermal area, Greece
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Isotope and hydrochemical assessment of the Samothraki Island geothermal area, Greece

机译：希腊Samothraki岛地热区的同位素和水化学评估

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摘要

Thermal and cold water samples were collected from the island of Samothraki, in the northern part of the Aegean Sea. Isotopic (δD, δ~(18)O, δ~(34)S_(so)_4, δ~(34)S_s_2~- δ~(18)O_(so)_4) and chemical analyses (major ions, Br, B, Li, SiO_2) were performed in most of them. The study of ionic and isotopic contents shows that, the thermal waters of Samothraki Island are mainly locally fed groundwater that changes, chemically and isotopically, during its circulation within a major fracture zone reaching great depths. More specifically, the evaluation of the entire dataset indicates that water-rock reactions and mixing with brines are the principal sources of the isotopic and salinity fingerprint of these waters. The isotopic [δ~(18)O (SO_4~(2-)-H_2O)] and chemical geothermometers applied on the waters of the thermal springs, suggest the probable existence of a geothermal reservoir of high enthalpy. The temperature attributed to this deep geothermal field is higher than 220 ℃.
机译：从爱琴海北部的Samothraki岛收集了热水和冷水样品。同位素（δD，δ〜（18）O，δ〜（34）S_（so）_4，δ〜（34）S_s_2〜-δ〜（18）O_（so）_4）和化学分析（主要离子，Br， B，Li，SiO_2）中的大多数都进行了。对离子和同位素含量的研究表明，Samothraki岛的热水主要是局部注入的地下水，在其进入大深度断裂带的循环过程中，化学和同位素都会发生变化。更具体地说，对整个数据集的评估表明，水岩石反应以及与盐水的混合是这些水的同位素和盐度指纹的主要来源。同位素[δ〜（18）O（SO_4〜（2-）-H_2O）]和化学地热仪应用于温泉水，表明可能存在高焓的地热储层。该深层地热场的温度高于220℃。

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