A new method for aquifer system identification and parameter estimation
Article first published online: 5 JUN 2012
Copyright © 2012 John Wiley & Sons, Ltd.
Volume 27, Issue 17, pages 2485–2497, 15 August 2013
How to Cite
Avci, C. B., Şahin, A.Ufuk. and Çiftçi, E. (2013), A new method for aquifer system identification and parameter estimation. Hydrol. Process., 27: 2485–2497. doi: 10.1002/hyp.9352
- Issue published online: 16 JUL 2013
- Article first published online: 5 JUN 2012
- Accepted manuscript online: 24 APR 2012 06:26PM EST
- Manuscript Accepted: 20 APR 2012
- Manuscript Received: 7 FEB 2012
- incremental area method;
- aquifer type identification;
- pumping test;
- heterogeneous aquifer
The standard practice for assessing aquifer parameters is to match groundwater drawdown data obtained during pumping tests against theoretical well function curves specific to the aquifer system being tested. The shape of the curve derived from the logarithmic time derivative of the drawdown data is also very frequently used as a diagnostic tool to identify the aquifer system in which the pumping test is being conducted. The present study investigates the incremental area method (IAM) to serve as an alternative diagnostic tool for the aquifer system identification as well as a supplement to the aquifer parameter estimation procedure. The IAM based diagnostic curves for ideal confined, leaky, bounded and unconfined aquifers have been derived as part of this study, and individual features of the plots have been identified. These features were noted to be unique to each aquifer setting, which could be used for rapid evaluation of the aquifer system. The effectiveness of the IAM methodology was investigated by analyzing field data for various aquifer settings including leaky, unconfined, bounded and heterogeneous conditions. The results showed that the proposed approach is a viable method for use as a diagnostic tool to identify the aquifer system characteristics as well as to support the estimation of the hydraulic parameters obtained from standard curve matching procedures. Copyright © 2012 John Wiley & Sons, Ltd.