Database containing ground magnetic survey data
BETTY property

magnetic survey by overhauser and proton instruments
GPS data by garmin handhelds


GBN file (geosoft binary) channel description:
x1
y1
z1 - UTM coords, Zone 7 North, NAD 83

Magraw - raw magnetic readings, straight from the instruments
mag2  - despiked mag channel
mag3  - corrected for diurnal
mag4  - levelled mag channel
basemag - diurnal variation
ltime1  - local time channel
rem     - remark & comment (used for base mag location, Line D0)



Grid files:
5m grid cell size

betmag3.grd - corrected for diurnal

betmag4.grd - levelled mag channel, showing gaps where line spacing and/or gaps between readings exceed 40m

betmag4a.grd - no gaps.

