Survey Description:
Survey Title:Mount Pleasant Caldera (West)
GSC Open File Number:1946 
Survey Type:Radiometric
Very Low Frequency
Total Field Magnetic
Survey Start Date (YYYY-MM-DD):1987-11-10
Survey End Date (YYYY-MM-DD):1988-09-10
Data Acquisition:Digitally acquired
Platform:Fixed-wing aircraft
Survey Boundary:(45.55630,-66.99270)
Internal unsurveyed area: 
Flight Path Recording:
Survey Altitude Model:Constant mean terrain clearance (height above ground)
Flying Height (m):120.0
Traverse: Line Azimuth (degrees):135
Traverse: Line Spacing (m):250
Traverse: Total Kilometres:n/a
Control: Line Azimuth:n/a
Control: Line Spacing (m):n/a
Control: Total Kilometres:n/a
Diurnal Monitoring: Time Chord Length (sec):n/a
Diurnal Monitoring: Max. Deviation (nT):n/a
Magnetics: Sensor Make:n/a
Magnetics: Sensor Model:n/a
Magnetics: Sensitivity (nT):n/a
Magnetics: Resolution (nT):n/a
Magnetics: System:n/a
Magnetics: Hardware Config:n/a
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:n/a
Spectrometry: Sensor Model:n/a
Spectrometry: Recording Frequency (Hz):1
Spectrometry: Main Detector Volume (l):50
Spectrometry: Upward Detector Volume (l):8
Spectrometry: Sensor Height (m):120
Navigation Systems: Sensor:n/a

Channel Descriptions:
IDName:Units:Null Value:Description:
loctimelocal times0.0local time
linelinen/a0.0flight line number
linenameline namen/a0.0flight line name
linetypeline typen/a0.0line type
p_longLongitudedegrees0.0Datum=NAD27, ellipsoid=Clarke 1866
p_latLatitudedegrees0.0Datum=NAD27, ellipsoid=Clarke 1866
f_altmRadar altitudem0.0Height above ground level (Terrain Clearance)
r_baltRaw barometric altitudem0.0Uncorrected barometric altitude equivalent of absolute pressure, as recorded
r_altRaw radar altimeterm0.0Radar altimeter, as recorded
f_potPotassium (K)%0.0Fully-corrected Potassium, ground concentration, derived from r_pot
f_uraEquivalent Uranium (eU)ppm0.0Fully corrected Uranium, equivalent ground concentration, derived from r_ura
f_thoEquivalent Thorium (eTh)ppm0.0Fully corrected Thorium, equivalent ground concentration, derived from r_tho
f_rtkEquivalent Thorium/Potassium (eTh/K)ppm/%0.0Ratio of f_tho/f_pot (eTh/K)
f_rutEquivalent Uranium/equivalent Thorium (eU/eTh)0.0Ratio of f_ura/f_tho (eU/eTh)
f_rukEquivalent Uranium/Potassium (eU/K)ppm/%0.0Ratio of f_ura/f_pot (eU/K)
f_adrnNatural air absorbed dose ratenGy/h0.0ADRN=13.08*K + 5.67*eU + 2.49*eTh (GSC Bulletin 360, 1984)
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
r_totRaw Total Countcps0.0Uncorrected total count/s, ROI: 410-2810 MeV - full spectrum, 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_rdnuRaw Radon (up detector)counts0.0Raw Radon counts from up detector, calculated
r_cosRaw Cosmiccps0.0Uncorrected cosmic channel, counts/s, ROI: 3+ MeV, as recorded
r_mtfRaw magnetic total fieldnT0.0Raw magnetic total field, as recorded
f_mtfMagnetic total fieldnT0.0Corrected and levelled magnetic total field
f_vltVLF total field (line station)%0.0VLF total field component from transmitting station located normal to the flight line direction
f_vlqVLF quadrature (line station)%0.0VLF quadrature component using transmitting station located normal to the flight line direction
r_vltRaw VLF total field (line station)%0.0Raw VLF total field component, from transmitting line station, uncorrected - as recorded
r_vlqRaw VLF quadrature (line station)%0.0Raw VLF quadrature component, from transmitting line station, uncorrected - as recorded
r_prkpaRaw Barometric pressurekPa0.0Raw, uncorrected barometric pressure recorded during flight, as recorded
r_tempcRaw temperaturedegrees C0.0Raw ambient temperature, recorded during flight, as recorded