theis_calculate_parameters: theis_calculate_parameters
View source: R/theis_utilities.R
| theis_calculate_parameters | R Documentation |
theis_calculate_parameters
Description
Function to calculate the Transmisivity, Storage Coefficient and Radius of influence for the Theis model
Usage
theis_calculate_parameters(ptest, par, hydraulic = TRUE)
Arguments
ptest |
An object of the pumping_test class |
par |
List with the values of a and t0 obtained using the theis_solution_initial |
hydraulic |
Logical flag to indicate if hydraulic parameters are calculated. If False, the the statistcal parameter are calculated. function |
Value
A list with
Tr: Transmisivity
Ss: Storage coefficient
radius_influence
Author(s)
Oscar Garcia-Cabrejo khaors@gmail.com
References
Theis, C. The relation between the lowering of the piezometric surface and the rate and duration of discharge of a well using groundwater storage. Transactions of the American Geophysical Union, 1935, 2, 519-524
See Also
Other theis functions: exponential_integral,
theis_WF_LT_dlogt,
theis_WF_LT,
theis_solution_dlogt,
theis_solution_initial,
theis_solution,
theis_well_function_large,
theis_well_function_small,
theis_well_function
Examples
# Data from a confined aquifer
data(theis)
ptest <- pumping_test('Well1', Q = 1.3e-3, r = 200, t = theis$t, s = theis$s)
res <- theis_solution_initial(ptest)
# Calculate hydraulic parameters from fit parameters
theis_hydrpar <- theis_calculate_parameters(ptest, res)
print(theis_hydrpar)
# Calculate fit parameters from hydraulic parameters
res <- list(Tr = 1.5e-3, Ss = 2e-5)
theis_fitpar <- theis_calculate_parameters(ptest, res, FALSE)
