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

Authors

  • K. Yamamoto Graduate School of Environmental Science Okayama University, 1-1, Naka 3-chome, Tsushima, Kita-Ku Okayama 700-8530, Japan.
  • . Hashentuya Graduate School of Environmental Science Okayama University, 1-1, Naka 3-chome, Tsushima, Kita-Ku Okayama 700-8530, Japan.
  • Y. Otani Graduate School of Environmental Science Okayama University, 1-1, Naka 3-chome, Tsushima, Kita-Ku Okayama 700-8530, Japan.
  • Y. He Graduate School of Environmental Science Okayama University, 1-1, Naka 3-chome, Tsushima, Kita-Ku Okayama 700-8530, Japan.
  • Masaji Watanabe Graduate School of Environmental Science Okayama University, 1-1, Naka 3-chome, Tsushima, Kita-Ku Okayama 700-8530, Japan.

DOI:

https://doi.org/10.21914/anziamj.v53i0.5110

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

Published

2012-11-05

Issue

Vol. 53 (2011)

Section

Proceedings Engineering Mathematics and Applications Conference