Geosciences 2016, 6, 16 3 of 26 TGheoiscsieinmcesm20e1d6,i6a, t1e6ly raises a question—what area should the spatial kernel cover each t3imof e28? The answer is provided by a process of calibration to select an "optimal" bandwidth (an optimal search window sTizhei)s. iCmhmoeicdeia...