Estimation of groundwater recharge parameters by time series analysis
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Abstract
A model is proposed that relates water level fluctuations in a Dupuit aquifer to effective precipitaton at the top of the unsaturated zone. Effective precipitation, defined herein as that portion of precipitation which becomes recharge, is related to precipitation measured in a nearby gage by a two-parameter function. A second-order stationary assumption is used to connect the spectra of effective precipitation and water level fluctuations. Measured precipitation is assumed to be Gaussian, in order to develop a transfer function that relates the spectra of measured and effective precipitation. A nonlinear least squares technique is proposed for estimating parameters of the effective-precipitation function. Although sensitivity analyses indicate difficulties that may be encountered in the estimation procedure, the methods developed did yield convergent estimates for two case studies.
Suggested Citation
Naff, R.L., Gutjahr, A.L., 1983, Estimation of groundwater recharge parameters by time series analysis: Water Resources Research, v. 19, no. 6, p. 1531-1546, https://doi.org/10.1029/WR019i006p01531.
ISSN: 1944-7973 (online)
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Estimation of groundwater recharge parameters by time series analysis |
| Series title | Water Resources Research |
| DOI | 10.1029/WR019i006p01531 |
| Volume | 19 |
| Issue | 6 |
| Publication Date | July 09, 2010 |
| Year Published | 1983 |
| Language | English |
| Publisher | American Geophysical Union |
| Description | 16 p. |
| First page | 1531 |
| Last page | 1546 |