Removal of the Host-rock Response from Time-domain Electromagnetic Data by Transforming to and Filtering in the Frequency Domain |
Common terms and phrases
&VAL 15 of line 9 of line anomalies for channels anomalies obtained anomaly station Bx components Bz and Bx Calculated host-rock responses Channels 13 Combined host-rock Component Decay constant Component Line LNG Component Line SAS conductivity-thickness product confined conductor cut-off frequency Cycles/data length data set decay plots depicted in Figures DISTANCE VERTICAL DEFLECTION EMF mV ENTER Old field data field lay-out field profile Filres filter technique FILTERED VALUES filtering method FOURIER THEOREM Fourier Transform Frequency Cycles/datalength GEONICS EM37 GOSUB half-space host-rock and plate INPUT Isolated anomalies LABEL Lake Ngami Line LNG GNS line LNG-GN5 obtained Line SAS 00 LNG GNS Channels Log of values LOOP LOOP LOOP X Component Nomogram ohm.m host-rock response OUTPUT KBD parameters pass filter PLOT OF STATION plots for anomalies rock response SAS 00 Channels Sasolburg siemens SPECTRUM OF HOST-ROCK Stations 40 traditional host-rock-removal method transmitter loop VERTICAL DEFLECTION wwwwww Z Component