Function to calculate the equivalent time required in the variable-rate tests.

variable_rate_equivalent_time(t, s, pump_history)

Arguments

t

Vector with the times since pumping started

s

Vector with the drawdowns since pumping started

pump_history

Vector with the pump history of the test

Value

A list with

  • ta equivalent time

  • sa drawdown corresponding to equivalent time

References

Birsoy, Y.K. and W.K. Summers, 1980. Determination of aquifer parameters from step tests and intermittent pumping, Ground Water, vol. 18, no. 2, pp. 137-146.

See also

Other equivalent_time functions: recovery_equivalent_time