COMM Survey area : East Tasmania Airborne Magnetic & Radiometric Survey COMM Located data type : Reduced Magnetics Data COMM Dates of acquisition : 21/03/2022 23/06/2022 COMM COMM CLIENT DETAILS COMM --------------- COMM Company Flown by : MAGSPEC Airborne Surveys Pty Ltd COMM Company Processed: MAGSPEC Airborne Surveys Pty Ltd COMM Client : Geoscience Australia COMM Project Number : GA Project Number P5020 / MAS Project Number 1298 COMM COMM COMM COMM AIRBORNE SURVEY EQUIPMENT: COMM ------------------------- COMM COMM Aircraft : Airbus AS350B2 VH-SRB COMM Magnetometer : Geometrics G823A COMM Magnetometer Resolution : 0.001 nT COMM Magnetometer Compensation : Post Flight COMM Magnetometer Sample Interval : 20 Hz COMM Data Acquisition : GeoResults ZDAS DX2 COMM Spectrometer : Radiation Solutions RS 500 COMM Crystal Size : 33 lt downward array COMM Spectrometer Sample Interval : 1.0 Seconds COMM GPS Navigation System : Novatel OEM719 Dual Frequency L1 L2 + Glonass + TerraStar Corrections COMM COMM AIRBORNE SURVEY SPECIFICATIONS COMM ------------------------------ COMM COMM COMM Area: COMM COMM Flight Line Direction : 090 - 270 degrees COMM Flight Line Separation : 200 metres COMM Tie Line Direction : 000 - 180 degrees COMM Tie Line Separation : 2000 metres COMM Terrain Clearance : 80 metres (MTC) COMM Survey flown : March - June 2022 COMM COMM COMM DATUM and PROJECTION COMM -------------------- COMM COMM Datum : Geodetic Datum of Australia 2020. GDA2020 COMM Projection : Map Grid of Australia. MGA COMM Zone : Zone 55 COMM Local Time Zone COMM --------------- COMM COMM Time Zone (LOCAL_TIME) : Australian Eastern Daylight Time (UTC +11) COMM COMM Diurnal Base Station Magnetometer COMM --------------------------------- COMM COMM Dates : 19th - 20th March 2022 COMM Base Station Magnetometer : GEM GSM19W COMM Base Station Sampling Rate : 1 Hz COMM Base Station Location (GDA2020) : -042.8280930, 147.4771314 (GDA2020) COMM Base Station Location (MGA55) : 538998.47, 5258164.50 Zone 55 (MGA55) COMM Base Station Average Value : 62080 nT COMM COMM Dates : 19th - 20th March 2022 COMM Base Station Magnetometer : GEM GSM19W COMM Base Station Sampling Rate : 1 Hz COMM Base Station Location (GDA2020) : -042.8278310, 147.4778501 (GDA2020) COMM Base Station Location (MGA55) : 539057.380, 5258193.270 Zone 55 (MGA55) COMM Base Station Average Value : 62036 nT COMM COMM Dates : 21st March - 27th May 2022 COMM Base Station Magnetometer : GEM GSM19W COMM Base Station Sampling Rate : 1 Hz COMM Base Station Location (GDA2020) : -42.8247116, 147.4747867 (GDA2020) COMM Base Station Location (MGA55) : 538808.94, 5258541.08 Zone 55 (MGA55) COMM Base Station Average Value : 61800 nT COMM COMM Dates : 21st March - 27th May 2022 COMM Base Station Magnetometer : GEM GSM19W COMM Base Station Sampling Rate : 1 Hz COMM Base Station Location (GDA2020) : -42.8245662, 147.4747078 (GDA2020) COMM Base Station Location (MGA55) : 538802.58, 5258557.26 Zone 55 (MGA55) COMM Base Station Average Value : 61803 nT COMM COMM Dates : 28th May - 23rd June 2022 COMM Base Station Magnetometer : GEM GSM19W COMM Base Station Sampling Rate : 1 Hz COMM Base Station Location (GDA2020) : -42.1256145, 148.0610916 (GDA2020) COMM Base Station Location (MGA55) : 587704.55, 5335732.02 Zone 55 (MGA55) COMM Base Station Average Value : 61125 nT COMM COMM Dates : 28th May - 23rd June 2022 COMM Base Station Magnetometer : GEM GSM19W COMM Base Station Sampling Rate : 1 Hz COMM Base Station Location (GDA2020) : -42.1257218, 148.0610744 (GDA2020) COMM Base Station Location (MGA55) : 587702.98, 5335720.12 Zone 55 (MGA55) COMM Base Station Average Value : 61053 nT COMM COMM PROCESSING AND CALIBRATIONS COMM -------------------------- COMM COMM Where data is not recorded at 20Hz interpolation has been performed. COMM COMM COMM Parallax correction of +8.5 fiducial has been applied to the GPS XYZ. COMM Parallax correction of +4 fiducial has been performed on the radar altimeter. COMM A convolution filter of lenght 13 fiducials, fitting a low degree polynomial to a least-squares equation was applied to the radar_calibrated_edited channel. COMM COMM DATA FORMAT COMM ----------- COMM COMM Flight I5 -999 - Flight number COMM Line I9 -9999999 - Line number COMM FID I9 -9999999 - Fiducial number COMM DATE I10 -99999999 YYYYMMDD Date COMM LONGITUDE F13.7 -999.9999999 degrees GDA2020 Longitude COMM LATITUDE F13.7 -999.9999999 degrees GDA2020 Latitude COMM EASTING F11.2 -999999.99 metres GDA2020 MGA55 Easting COMM NORTHING F12.2 -9999999.99 metres GDA2020 MGA55 Northing COMM GNSS_HEIGHT F8.2 -999.99 metres Geoidal GPS Height COMM RADAR_CALIBRATED_EDITED F8.2 -999.99 metres Radar Radar Altimeter (parallax corrected to location of Mag sensor, calibrated, edited & filtered) COMM RADAR_DEM F8.2 -999.99 metres Geoidal surface derived Digital Elevation Model (DEM) derived from the radar altimeter COMM MAGNETICS_CORRECTED F11.3 -99999.999 nT Compensated edited corrected for diurnal variation and IGRF magnetics. COMM MAGNETICS_CORRECTED_TIELEVELLED F11.3 -99999.999 nT Tie line levelled magentics COMM MAGNETICS_CORRECTED_MICROLEVELLED F11.3 -99999.999 nT Micro-levelled magnetics COMM MAGNETIC_DIURNAL F11.3 -99999.999 nT Magnetic Diurnal COMM MAGNETIC_IGRF F11.3 -99999.999 nT IGRF (IGRF 2020 updated to 2022.33)