hantush_jacob_solution_initial: hantush_jacob_solutionb_initial

In khaors/pumpingtest: R Package for the analysis and evaluation of pumping tests

Description

Function to calculate the initial parameters of the Hantush-Jacob model

Usage

hantush_jacob_solution_initial(ptest)

Arguments

ptest

A pumping_test object

Value

A list with

• a: Slope of the straight line fitted to the drawdown data using the Cooper-Jacob approach

• t0: Intercept of the straight line fitted to the drawdown data using the Cooper-Jacob approach

• lambda: Leakage factor defined as

  λ = √{\frac{b^{'}T}{k_{h}^{'}}}

where b^{'} and k_{h}^{'} are the thickness and the vertical hydraulic conductivity of the aquitard, and T is the transmissivity of the underlying aquifer.

Author(s)

Oscar Garcia-Cabrejo [e-mail]

References

Hantush, M. S. Flow to wells in aquifers separated by a semipervious layer. Journal of Geophysical Research, 1967, 72, 1709.

See Also

Other hantush_jacob functions: hantush_jacob_WF_LT_dlogt, hantush_jacob_WF_LT, hantush_jacob_calculate_parameters, hantush_jacob_solution_dlogt, hantush_jacob_solution, hantush_jacob_well_function

Examples

data(hantush_jacob)
ptest <- pumping_test('Well1', Q = 6.309e-3, r = 3.048, t=hantush_jacob$t, s = hantush_jacob$s)
sol0 <- hantush_jacob_solution_initial(ptest)
print(sol0)

khaors/pumpingtest documentation built on Nov. 15, 2019, 8:10 p.m.