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首页> 外文会议>Geothermal Resources Council Annual Meeting >Geothermal Exploration in Central-Southern Chile (33°-42°S)
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Geothermal Exploration in Central-Southern Chile (33°-42°S)

机译：智利中部地热勘探（33°-42°S）

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Geothermal exploration in Central-Southern Chile (33°-42°S) conducted recently by the Department of Geology of the University of Chile has lead to the identification of a number of promising areas, such as the Nevados de Chillan (36.9°S) and Cordon Caulle (40.5°S). The conceptual models obtained from geological and geochemical surveys suggest surprising similarities between these two prospects. The close spatial relationship with NW-trending volcanic chains, the lack of chloride springs, and the large outflow of steam-heated waters point to the existence of vapor-dominated systems overlie by shallow steam-heated aquifers. These features differ from the traditional model of high-enthalpy liquid-dominated systems in steep volcanic terrains, applicable to most of the geothermal systems in Northern Chile. The geothermal development of Central-Southern Chile and elsewhere is strongly advised, either for power generation or direct uses, since the traditional energy sources -hydroelectricity and fossil fuels - form part of a not sustainable plan. Hydroelectricity faces periodic climate changes and droughts, and extensive flooding of dams is not welcome by environmental groups and indigenous communities. On the other hand, natural gas consumption, projected to rise in the next years, will imply both an increase in CO_(2) emissions and a higher dependence on imported fossil fuels.
机译：智利地质部在智利中央南部（33°-42°S）的地热勘探已导致识别许多有前途的地区，例如Nevados de Chillan（36.9°S）和甲齿轮（40.5°S）。从地质和地球化学调查获得的概念模型表明这两个前景之间的惊人的相似之处。与NW趋势火山链的紧密空间关系，氯化水泉水缺乏，蒸汽加热水域的大流出点指向浅蒸汽含水层覆盖的蒸汽占主导地位的存在。这些特征与陡峭的火山地形中的高焓液体主导系统的传统模型不同，适用于智利北部的大多数地热系统。智利中部和其他地方的地热发展被强烈建议，用于发电或直接用途，因为传统的能源 - 脱发和化石燃料 - 形成不可持续计划的一部分。水力电力面临周期性的气候变化和干旱，环境团体和土着社区不欢迎大坝的广泛洪水。另一方面，在未来几年内预计的天然气消费量将暗示CO_（2）排放量增加，以及对进口化石燃料的更高依赖。

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