Determination of Aquitard/Aquiclude Hydraulic Properties from Arbitrary Water‐Level Fluctuations by Deconvolution
Determination of Aquitard/Aquiclude Hydraulic Properties from Arbitrary Water‐Level Fluctuations by Deconvolution
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DOI：
10.1111/j.1745-6584.1989.tb00009.x
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发表时间：
1989
期刊：
影响因子：
--
通讯作者：
S. P. Neuman;D. A. Gardner
中科院分区：
文献类型：
--
作者：
S. P. Neuman;D. A. Gardner
提出了一种反褶积方法，用于估计弱透水层/隔水层的垂直水力扩散率，其基础是在封闭层和邻近含水层中完成的测压计中的水位测量。水位可能以任意方式波动，这不一定是由规定的泵送方案（如常规泵送测试所需）引起的。文献中的一个简单公式可用于校正测压计响应中的时间滞后的测量水位。如果从实验室固结试验中得知围压材料的具体储存量，则可以将水力扩散系数估计值转换为垂直水力传导系数。该方法说明了从南加州的案例研究的帮助下，并产生强大的参数估计。
A deconvolution method is proposed for the estimation of aquitard/aquiclude vertical hydraulic diffusivities on the basis of water-level measurements in piezometers completed both in the confining layer(s) and in neighboring aquifers. The water levels may fluctuate in an arbitrary manner which is not necessarily caused by a prescribed pumping regime (as required in conventional pumping tests). A simple formula from the literature can be used to correct the measured water levels for time lag in the piezometer response. If the specific storage of the confining material is known from laboratory consolidation tests, the hydraulic diffusivity estimates can be translated into vertical hydraulic conductivities. The method is illustrated with the aid of a case study from southern California and is shown to yield robust parameter estimates.