Study on a bottom topography of a lake using positioning data and depth data

K. Yamamoto, . Hashentuya, Y. Otani, Y. He, Masaji Watanabe

Abstract


The bottom topography of a lake is investigated. Numerical techniques to utilize positioning data and depth data are described. Data sets obtained in RTK-GPS positioning consist mainly of temporal, latitudinal, longitudinal, and altitudinal records. Data sets obtained in echo-sounder measurement consist of temporal records and depths. The latitudinal and longitudinal data are transformed to rectangular coordinates by the Gauss--Kruger Projection, and the resultant positional data sets are synchronized with depths to yield trajectories over the lake's floor. A bottom topography over a triangular mesh is updated using the positioning data and the depth data.

References
  • Shinya Sumida, Ying Liu, Yu Li, Kazuhiro Yamamoto, Majda Ceric, Masaji Watanabe, Numerical study of currents generated in a lake, and verification by experiment, ANZIAM J., 49:C541--C558, May 2008. http://journal.austms.org.au/ojs/index.php/ANZIAMJ/article/view/365
  • Ying Liu, Kazuhiro Yamamoto, Majda Ceric, Masaji Watanabe, Numerical study of flow generated in a lake and experiment using GPS, ANZIAM J., 50:C912--C929, June 2009. http://journal.austms.org.au/ojs/index.php/ANZIAMJ/article/view/1470
  • Kazuhiro Yamamoto, Hashentuya, Yoji Otani, Masaji Watanabe, Bottom Topography Measurement using RTK-GPS and High Precision Echo Sounder, CICC-ITOE 2011. Volume 2:309--312,2011

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DOI: http://dx.doi.org/10.21914/anziamj.v53i0.5110



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