Fig. 5
From: Evaluating an enhanced thermal response test (ETRT) with high groundwater flow
Evaluation of the effective thermal conductivities (λeff) for two representative depths of 5.0 m and 12.5 m, respectively: a Identifying the transient temperature increase from the experimental data, b applying sequential forward evaluation with the ILS and testing for convergence of the result, c deriving parameters for linear fit. *Please note that the axes are scaled to the natural logarithm