66b12c33-fe60-471a-a7ed-ef4b6b9f7b82 urn:uuid eng UTF-8 nonGeographicDataset nonGeographicDataset 2025-10-16T12:10:56 creation ISO 19115 2016 Automated Density Profiling over enlongate topographic features 66b12c33-fe60-471a-a7ed-ef4b6b9f7b82 Nettletons concept of density profiling can be utilised to give useful estimates of the bulk density of topographic features. These estimates can be used to infer the composition of such topography, or to assist in the interpretation of local gravity anomalies. Two methods that facilitate multiple density profiling over elongate topography are presented. One is a simulation reduction method utilising the two-dimensional line integral formula of Talwani, Worzel and Landisman (1959). It enables data from any detailed gravity traverse crossing an elongate topographic feature at right angles to be automatically reduced by computer to a set of multiple density Bouguer profiles. From these profiles, the bulk density of the topographic feature can be estimated by visual correlation. The other is a graphical method of converting a set of multiple density Bouguer profiles directly to point density estimates, without the need for visual correlation. Both methods are theoretically exact for the ideal case. A visual correlation determination of 2.85 ± 0.05 g cm^-3 is demonstrated for a traverse crossing the 300 m high Harts Range, Northern Territory, and three point determinations of 2.97,2.97, and 2.99 g c^-3, for a traverse crossing the 100 m high Fraser Range, Western Australia. {"type": "Polygon", "coordinates": [[[112.5, -35.5], [138.0, -35.5], [138.0, -10.5], [112.5, -10.5], [112.5, -35.5]]]} 112.5 138.0 -35.5 -10.5 Earth Sciences GA Publication Journal NT Published_External WA Journal article (pdf) documentDigital Journal article (pdf) PDF Unnamed resource documentDigital HTML