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

Description Usage Arguments Value Author(s) References See Also Examples

Function to calculate the derivative of the drawdown with respect to the log of time

1	theis_solution_dlogt(ptest, a, t0, t)

`ptest`	A pumping_test object
`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
`t`	value

This function returns the derivative of the drawdown with respect to the derivative of log time

Oscar Garcia-Cabrejo khaors@gmail.com

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

Other theis functions: exponential_integral, theis_WF_LT_dlogt, theis_WF_LT, theis_calculate_parameters, theis_solution_initial, theis_solution, theis_well_function_large, theis_well_function_small, theis_well_function

data(theis)
ptest <- pumping_test("Well1", Q = 1.3e-3, r = 200, t = theis$t, s = theis$s)
sol0 <- theis_solution_initial(ptest)
resd <- theis_solution_dlogt(ptest, sol0$a, sol0$t0, theis$t)
print(resd)