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DOI | 10.1029/2019WR026961 |
On the Reliability of Variable-Rate Pumping Test Results: Sensitivity to Information Content of the Recorded Data | |
Naderi, Mostafa1,2; Gupta, Hoshin, V3 | |
2020-05-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2020 |
卷号 | 56期号:5 |
文章类型 | Article |
语种 | 英语 |
国家 | Iran; USA |
英文摘要 | Pumping tests are widely used to estimate parameters such as transmissivity and storativity, using aquifer response equations that assume a time-constant pumping rate. However, in actual practice the discharge rate will often vary erratically and follow a generally decreasing trend as the test proceeds. In such cases, if the discharge history is recorded with sufficient temporal fidelity, accurate solutions can be obtained via time domain piecewise-linear numerical integration. However, if the discharge data do not adequately characterize the variability in the dynamics of the pumping rate, the result can be information loss leading to bias in the inferred parameter estimates. Here, we investigate the severity of this problem for six selected aquifer types, including those that are confined, leaky, and unconfined. Our results indicate that the effects of information loss due to inadequate temporal resolution of the discharge data and systematic observational error are significantly more severe than due to random observational error. The implication is that operators should make a concerted effort to record the pumping rate at the highest practical temporal resolution throughout the duration of the test. |
英文关键词 | aquifer parameters variable-rate pumping tests time domain numerical integration Duhamel' s principle confined unconfined and leaky aquifers information loss |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000537736400022 |
WOS关键词 | AQUIFER HYDRAULIC-PROPERTIES ; UNCONFINED AQUIFERS ; PARAMETER-IDENTIFICATION ; TIME-SERIES ; DRAWDOWN ; CURVE ; WELL ; FLOW ; HEAD |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/280663 |
专题 | 资源环境科学 |
作者单位 | 1.IASBS, Dept Earth Sci, Zanjan, Iran; 2.IASBS, Res Ctr Basic Sci & Modern Technol RBST, Zanjan, Iran; 3.Univ Arizona, Dept Hydrol & Atmospher Sci, Tucson, AZ USA |
推荐引用方式 GB/T 7714 | Naderi, Mostafa,Gupta, Hoshin, V. On the Reliability of Variable-Rate Pumping Test Results: Sensitivity to Information Content of the Recorded Data[J]. WATER RESOURCES RESEARCH,2020,56(5). |
APA | Naderi, Mostafa,&Gupta, Hoshin, V.(2020).On the Reliability of Variable-Rate Pumping Test Results: Sensitivity to Information Content of the Recorded Data.WATER RESOURCES RESEARCH,56(5). |
MLA | Naderi, Mostafa,et al."On the Reliability of Variable-Rate Pumping Test Results: Sensitivity to Information Content of the Recorded Data".WATER RESOURCES RESEARCH 56.5(2020). |
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