Description: Sites that may be precisely reoccupied (to within a few millimetres) by a gravity meter, for the purpose of tying gravity surveys to an absolute gravity datum. Precise location is facilitated by site photographs and sketches and descriptions in addition to coordinates; most of the latter are not sufficiently accurate on their own. Absolute gravity values at each station are for at least one of the following datums: Isogal65, Isogal84, Australian Absolute Gravity Datum 2007 (AAGD07). The stations have been established either by absolute gravimetry or multiple repeat loop measurements with respect to other base stations.
Description: Measurement locations including height above sea level, observed gravity and calculated complete Bouguer anomaly values including terrain correction from gravity surveys conducted in Tasmania. Approximately 85,000 stations.
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Description: Spatial index (polygons) of airborne geophysical surveys for which digital data is held, with summary attributes including survey name, operator, contractor, processor, acquisition dates, platform and sensor. Full metadata for each survey including operations reports and actual line and gridded data available for download free from MRT's website. Many surveys have associated digital elevation data from radar altimetry. Includes magnetic, radiometric, electromagnetic and LiDAR survey data.