Survey Description:
Survey Title:Minto
GSC Open File Number:4331  4332  4333  4334 
Survey Type:Total Field Magnetic
Survey Start Date (YYYY-MM-DD):2001-09-17
Survey End Date (YYYY-MM-DD):2001-09-28
Data Acquisition:Digitally acquired
Survey Boundary:(62.75592,-137.51467)
Internal unsurveyed area: 
Flight Path Recording:Video
Survey Altitude Model:Constant mean terrain clearance (height above ground)
Flying Height (m):120.0
Traverse: Line Azimuth (degrees):48
Traverse: Line Spacing (m):500
Traverse: Total Kilometres:2760.0
Control: Line Azimuth:130
Control: Line Spacing (m):3500
Control: Total Kilometres:505.0
Diurnal Monitoring: Time Chord Length (sec):n/a
Diurnal Monitoring: Max. Deviation (nT):2.5
Magnetics: Sensor Make:Geometrics
Magnetics: Sensor Model:G822A
Magnetics: Sensitivity (nT):0.0050
Magnetics: Resolution (nT):0.0100
Magnetics: System:CESIUM
Magnetics: Hardware Config:Optically pumped cesium vapour, 23 m below helicopter
Vertical Gradiometer: Sensor Separation:n/a
Electromagnetics: Sensor Make:n/a
Electromagnetics: Sensor Model:n/a
Electromagnetics: Hardware Config:n/a
VLF: Line Station:n/a
Spectrometry: Sensor Make:Exploranium
Spectrometry: Sensor Model:GR820, 256 multi-channel, Thorium stabilized
Spectrometry: Recording Frequency (Hz):1
Spectrometry: Main Detector Volume (l):33.6
Spectrometry: Upward Detector Volume (l):8.4
Spectrometry: Sensor Height (m):120.0
Navigation Systems: Sensor:Visual
Global Positioning System

Channel Descriptions:
IDName:Units:Null Value:Description:
lineline-0.0flight line number
p_longLongitudedegrees0.0Datum=NAD27, ellipsoid=Clarke 1866
p_latLatitudedegrees0.0Datum=NAD27, ellipsoid=Clarke 1866
gpsaltGPS altitudem0.0GPS altitude above MSL (mean sea level)
f_altmRadar altitudem0.0Height above ground level (Terrain Clearance)
demrawDigital Elevation Modelm0.0(Barometric altitude or GPS elevation) - radar altitude
magrawRaw magnetic total field (compensated, lagged, edited)nT0.0Compensated if necessary.
f_mtfbMagnetic total field (base station)nT0.0Corrected magnetic total field recorded at base station
magdiurDiurnal corrected magnetic total fieldnT0.0
srvmglevMagnetic Total field, levelled to surveynT0.0
igrfIGRFnT0.0Calculated International Geomagnetic Reference Field
srvmgresResidual magnetic field, levelled to surveynT0.0
r_liveRaw live timems0.0Detector 'live' time (time during which the ADC is not busy, and is capable of responding to a detector event)
r_cosRaw Cosmiccps0.0Uncorrected cosmic channel, counts/s, ROI: 3+ MeV, as recorded
r_upuRaw Uranium (up detector)cps0.0Uncorrected raw uranium count/s (up detector), ROI: 1660-1860 keV - centred on Bismuth-214 peak, as recorded
r_rdnRaw Radoncps0.0Raw Radon counts/s, calculated
r_totRaw Total Countcps0.0Uncorrected total count/s, ROI: 410-2810 MeV - full spectrum, as recorded
f_totTotal countcps0.0Total count (410-2810 MeV - full spectrum)
r_potRaw Potassiumcps0.0Uncorrected counts/s, ROI: 1360-1560 keV - centred on Potassium-40 peak, as recorded
r_uraRaw Uraniumcps0.0Uncorrected counts/s, ROI: 1660-1860 keV - centred on Bismuth-214 peak, as recorded
r_thoRaw Thoriumcps0.0Uncorrected counts/s, ROI: 2410-2810 keV - centred on Thallium-208 peak, as recorded
f_nadrNatural air absorbed dose ratenGy/h0.0ADRN=13.08*K + 5.67*eU + 2.49*eTh (GSC Bulletin 360, 1984)
f_potPotassium (K)%0.0Fully-corrected Potassium, ground concentration, derived from r_pot
f_uraEquivalent Uranium (eU)cps0.0Fully corrected Uranium, equivalent ground concentration, derived from r_ura
f_thoEquivalent Thorium (eTh)cps0.0Fully corrected Thorium, equivalent ground concentration, derived from r_tho
f_tempcTemperaturecelcius0.0Ambient temperature, recorded during flight
baro_prBarometric pressuremillibars0.0Barometric pressure recorded during flight
flightFlight number-0.0
linetypeline type-0.0line type
linenameline name-0.0flight line name