Aquifer Imaging with Oscillatory Hydraulic Tomography: Application at the Field Scale
Aquifer Imaging with Oscillatory Hydraulic Tomography: Application at the Field Scale
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DOI：
10.1111/gwat.12960
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发表时间：
2019-12-09
期刊：
影响因子：
2.6
通讯作者：
Kitanidis, Peter K.
中科院分区：
文献类型：
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作者：
Cardiff, Michael;Zhou, YaoQuan;Kitanidis, Peter K.
模拟和实验室实验已经证明了振荡水力层析成像（OHT）的能力，以表征含水层水力特性的非均质性。在OHT中，通过以设定频率的周期性泵送/注入对位置施加应力，并且在多个监测位置处测量所产生的压头信号。振荡源反复移动，允许含水层特性的层析成像。改变振荡周期也会导致观测结果具有额外的信息。理论上，OHT与其他液压层析成像方法相当，因为分布式压力变化测量提供表征信息。在实践中，OHT有几个好处，包括：（1）很少或没有水注入含水层或从含水层提取;（2）在设定的时间段内，可以很容易地在存在噪声的情况下提取观测信号。我们报告了OHT的第一个现场应用，在博伊西水文地球物理研究站（BHRS）使用一个振荡信号发生器进行了非常小的循环体积，
Modeling and laboratory experiments have demonstrated the ability of oscillatory hydraulic tomography (OHT) to characterize heterogeneity in aquifer hydraulic properties. In OHT, a location is stressed via periodic pumping/injection at a set frequency, and the resulting head signal is measured at a number of monitoring locations. The source of oscillations is repeatedly moved, allowing tomographic imaging of aquifer properties. Changing the period of oscillation also results in observations with additional information. In theory, OHT is comparable to other hydraulic tomography methods in that distributed pressure change measurements provide characterization information. In practice, OHT has several benefits including: (1) little to no water injected into or extracted from the aquifer; and (2) an observational signal at a set period that can be easily extracted in the presence of noise. We report the first field application of OHT, carried out at the Boise Hydrogeophysical Research Site (BHRS) using an oscillating signal generator with a very small cycling volume of