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Helictite, 1973, Vol 11, Issue 4, p. 92-95
Results of Survey levelling at Bungonia Caves, New South Wales
Anderson, Edward G.
Abstract:
During 1971, members of the University of N.S.W. Speleological Society (UNSWSS) were working on a project to determine water table levels, as represented by sumps, in some of the Bungonia Caves. It was soon realised that the accuracy of heights determined from the available surface surveys, usually "forestry compass" traverses, was insufficient. The author was asked to provide more accurate surface levels and, consequently, two trips were organised on 24-25 July and 31 July 1971 with the aim of establishing a differential levelling net in the plateau area. Personnel on the first trip comprised E.G. Anderson and A.J. Watson (Senior Photogrammetrist, N.S.W. Lands Department), surveyors, and A.J. Pavey and M. Caplehorn, UNSWSS, assistants. On the second trip, M. Caplehorn was replaced by A. Culberg, UNSWSS.
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During 1971, members of the University of N.S.W. Speleological Society (UNSWSS) were working on a project to determine water table levels, as represented by sumps, in some of the Bungonia Caves. It was soon realised that the accuracy of heights determined from the available surface surveys, usually "forestry compass" traverses, was insufficient. The author was asked to provide more accurate surface levels and, consequently, two trips were organised on 24-25 July and 31 July 1971 with the aim of establishing a differential levelling net in the plateau area. Personnel on the first trip comprised E.G. Anderson and A.J. Watson (Senior Photogrammetrist, N.S.W. Lands Department), surveyors, and A.J. Pavey and M. Caplehorn, UNSWSS, assistants. On the second trip, M. Caplehorn was replaced by A. Culberg, UNSWSS.
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