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http://dx.doi.org/10.22640/lxsiri.2018.48.2.99

Precise Height Determination in Mountainous Areas of South Korea  

Lee, Suk-Bae (Department of Civil Engineering, Gyeongnam National University of Science and Technology)
Auh, Su-Chang (Graduate School of Gyeongnam National University of Science and Technology)
Publication Information
Journal of Cadastre & Land InformatiX / v.48, no.2, 2018 , pp. 99-108 More about this Journal
Abstract
The purpose of this study is to determine the precise height in mountainous areas of South Korea and Jiri mountain area was selected as a test bed for the study. Gravity observation and GNSS surveying were performed for 44 BM(Benchmark) points in the test bed and calculate the height and the height correction. In the calculation, the dynamic correction amount, the orthometric correction amount and the normal correction amount were calculated, and the dynamic height and orthometric height and the normal height were calculated considering each correction amount. The results showed that the difference between normal gravity and observed gravity and also the difference between orthometric correction and the normal correction. In addition, the results of the comparison of the present official BM height and the computed orthometric height in this study show that Korean height system should be shifted from the normal orthometric height system to the orthometric height system. Because the difference between the orthometric correction and the normal correction within the test bed indicated a distribution of at a minimum of -234.41 mm up to 196.925 mm, and the difference between the present official BM height and the calculated orthometric height were distributed from -0.121m to 0.011 m.
Keywords
Orthometric height; Normal height; Orthometric correction; Normal correction; Benchmark;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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