TITLE:
Measurement and Computational Study of Underwater Topography
AUTHORS:
Satoshi Iwakami, Masahiko Tamega, Masahide Sanada, Michiaki Mohri, Yoshitaka Iwakami, Naoki Okamoto, Eishi Mitsui, Hidetaka Chikamori, Ryosuke Akoh, Shuji Jimbo, Masaji Watanabe
KEYWORDS:
Topographic Change, Water Area, RTK-GPS, Echo Sounder
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.11 No.4,
April
30,
2023
ABSTRACT: This paper reports previously obtained results concerning topographic change in a water area. Latitude-longitude components of positional data obtained from a GPS receiver were transformed to planar orthogonal coordinates, and vertical components of positional data were combined with depth data obtained from an echo sounder. A piecewise linear function defined on a triangular mesh represented a surface that fitted measurement results. This study applied those techniques to data obtained in measurement of November, 2021 and data obtained in measurement of September, 2022.