COMM ********************************************** COMM **** LOCATED RADIOMETRIC DATA **** COMM **** NW TASMANIA **** COMM ********************************************** COMM - COMM Tasmania Development & Resources COMM - COMM AIRBORNE MAGNETIC & SPECTROMETRIC SURVEY COMM - COMM NW TASMANIA COMM AIRBORNE SURVEY SPECIFICATIONS COMM ------------------------------ COMM Date of Survey April, 1996 COMM Contractor Tesla Geophysics COMM Aircraft Cessna 210, VH-BNZ COMM Spectrometer Exploranium GR820 COMM - Crystal Volume 33.6 litres COMM Recording Interval 1.0 second COMM - (approx. 70m) COMM Terrain Clearance 90 metres COMM Line Spacing 200m Flight Lines COMM - 2000m Tie Lines COMM Line Direction E-W Flight Lines COMM - N-S Tie Lines COMM Navigation Novatel GPS COMM - Differentially Post Processed COMM Acquisition System Tesla TAG3 COMM - COMM LINE NUMBERS COMM ------------ COMM Traverses 100000-169999 COMM Ties 170000-179999 COMM - COMM DATA PROCESSING COMM --------------- COMM Radiometric Data Reprocessing September 2000 COMM Processing By Tesla Geophysics COMM Raw 256 data noise suppressed by Tesla SCANS (NASVD) COMM System Parallax Removed COMM Cosmic, Aircraft & Radon Backgrounds Removed COMM Stripping & Height Corrections Applied COMM (height corrections applied to maximum of 250m) COMM Data levelled COMM Located Data Format ASEG GDF2 COMM - COMM RADIOMETRIC COEFFICIENTS COMM ------ Cosmic BG Aircraft BG Height Correction COMM TC 0.867 98.5 0.0074 COMM K 0.053 17.7 0.0115 COMM U 0.042 0.63 0.0095 COMM Th 0.043 1.51 0.0079 COMM Stripping Th_to_U Th_to_K U_to_K U_to_Th K_to_Th K_to_U COMM - 0.2658 0.3955 0.7800 0.0505 0.0000 0.0060 COMM *************************************************************** COMM **** **** COMM **** TESLA GEOPHYSICS **** COMM **** Perth Office NSW Office **** COMM **** 41 Kishorn Rd 3 Fox Close **** COMM **** Applecross WA 6153 Kariong NSW 2250 **** COMM **** Ph. (08) 9364 8444 Ph. (02) 4340 0122 **** COMM **** Fax (08) 9364 6575 Fax (02) 4340 0155 **** COMM **** **** COMM *************************************************************** COMM Line is Line Number COMM Fiducial is Fiducial Number (time after midnight in seconds ) COMM Flight is Flight Number COMM Day_1996 is Julian Day, 1996 COMM East_AGD84_55 is AMG easting, AGD84, Zone 55 COMM North_AGD84_55 is AMG northing, AGD84, Zone 55 COMM GPSalt_WGS84 is GPS Altitude, WGS84 COMM Radalt is Radar Altimeter (Height above ground) COMM Temperature is Outside Air Temperature COMM Pressure is Barometric Pressure COMM Humidity is Humidity COMM Livetime is Spectrometer livetime COMM RawCos is Raw Cosmic Count COMM RawTot is Raw Total Count (Noise suppressed) COMM RawPot is Raw Potassium Count (Noise suppressed) COMM RawUra is Raw Uranium Count (Noise suppressed) COMM RawTho is Raw Thorium Count (Noise suppressed) COMM LevTot is Corrected, Tie-line & Micro-Levelled Total Count COMM LevPot is Corrected, Tie-line & Micro-Levelled Potassium COMM LevUra is Corrected, Tie-line & Micro-Levelled Uranium COMM LevTho is Corrected, Tie-line & Micro-Levelled Thorium