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首页> 外文期刊>Geophysical Research Letters >Natural free convection in porous media: First field documentation in groundwater
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Natural free convection in porous media: First field documentation in groundwater

机译:多孔介质中的自然自由对流:地下水的首次现场记录

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摘要

Natural free convection is a process of great importance in disciplines from hydrology to meteorology,oceanography, planetary sciences, and economic geology,and for applications in carbon sequestration and nuclear waste disposal. It has been studied for over a century — but almost exclusively in theoretical and laboratory settings.Despite its importance, conclusive primary evidence of free convection in porous media does not currently exist in a natural field setting. Here, we present recent electrical resistivity measurements from a sabkha aquifer near Abu Dhabi, United Arab Emirates, where large density inversions exist. The geophysical images from this site provide, for the first time, compelling field evidence of fingering associated with natural free convection in groundwater.
机译:自然自由对流在从水文学到气象学,海洋学,行星科学和经济地质的学科中,以及在固碳和核废料处理中的应用中,都是非常重要的过程。它已经研究了一个多世纪,但几乎只在理论和实验室环境中进行。尽管它很重要,但在自然田野环境中目前尚不存在在多孔介质中自由对流的确凿的主要证据。在这里,我们介绍了最近阿拉伯联合酋长国阿布扎比附近的sabkha蓄水层的电阻率测量结果,那里存在大的密度反演。该地点的地球物理图像首次提供了令人信服的现场证据,表明与地下水中自然对流相关的指法。

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