We investigate how micro-geoelectrical monitoring is promising for studying microscale coupled processes since it facilitates the upscaling of pore-scale observations and enhances the petrophysical interpretation of the geoelectrical measurements. Microscale geophysics using microfluidics emerges and combines direct visualization of pore scale dynamics and chemical reactivity with geoelectrical monitoring. Calcite dissolution is a usual geochemical reaction considered as an analog of water–mineral interactions involved in the critical zone. We develop a numerical workflow combining image processing and geochemical simulation as inputs for the petrophysical modeling applied to a published data set of microscale induced polarization monitoring of calcite dissolution under partially saturated conditions. The successful interpretation provides the cation exchange capacity and specific surface area evolution; essential parameters in field-scale surveys.

中文翻译：

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微流体和光谱诱导极化用于方解石溶解的直接观察和岩石物理建模


我们研究了微地电监测如何有望研究微尺度耦合过程，因为它有助于扩大孔隙尺度观测并增强地电测量的岩石物理解释。使用微流体的微尺度地球物理学出现，并将孔隙尺度动力学和化学反应性的直接可视化与地电监测相结合。方解石溶解是一种常见的地球化学反应，被认为是临界区中涉及的水-矿物相互作用的类似物。我们开发了一个结合图像处理和地球化学模拟的数值工作流程，作为岩石物理模型的输入，应用于已发布的部分饱和条件下方解石溶解的微尺度诱导极化监测数据集。成功的解释提供了阳离子交换能力和比表面积演变;实地调查中的基本参数。