Technical Note: A simple generalization of the Brutsaert and Nieber analysis
The Brutsaert and Nieber (1977) analysis is a well-known method that can estimate soil parameters given discharge data for some aquifers. It has been used for several cases where the observed late-time behavior of the recession suggests that the water stream that is adjacent to the aquifer has nonze...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2015-06-01
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| Series: | Hydrology and Earth System Sciences |
| Online Access: | http://www.hydrol-earth-syst-sci.net/19/2755/2015/hess-19-2755-2015.pdf |
| Summary: | The Brutsaert and Nieber (1977) analysis is a well-known
method that can estimate soil parameters given discharge data for some
aquifers. It has been used for several cases where the observed late-time
behavior of the recession suggests that the water stream that is adjacent to
the aquifer has nonzero depth. However, its mathematical formulation is,
strictly speaking, not capable of reproducing these real-case scenarios since
the early time behavior is based on a solution for which the aquifer stream
has zero depth (Polubarinova-Kochina, 1962). We propose a simple generalization
for the Brutsaert and Nieber (1977) method that takes into
consideration the depth of the adjacent water stream. The generalization is
based on already available solutions by Polubarinova-Kochina (1962),
Chor et al. (2013) and Dias et al. (2014) and can be readily
implemented with little effort. The original and proposed equations are
tested against numerical simulations of the full nonlinear Boussinesq
equation. A sensitivity analysis shows that the modification can have
significant impact on the predicted values of both the drainable porosity and
the saturated hydraulic conductivity. |
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| ISSN: | 1027-5606 1607-7938 |