Japan Geoscience Union Meeting 2018

Presentation information

[EJ] Oral

A (Atmospheric and Hydrospheric Sciences) » A-OS Ocean Sciences & Ocean Environment

[A-OS14] Freshwater discharge from rivers and estuaries to the ocean

Tue. May 22, 2018 1:45 PM - 3:15 PM 104 (1F International Conference Hall, Makuhari Messe)

convener:Shinichiro Kida(Research Institute for Applied Mechanics, Kyushu University), Dai Yamazaki(Institute of Industrial Sciences, The University of Tokyo), Humio Mitsudera(北海道大学低温科学研究所, 共同), Yosuke Alexandre Yamashiki(Earth & Planetary Water Resources Assessment Laboratory Graduate School of Advanced Integrated Studies in Human Survivability Kyoto University), Chairperson:Kida Shinichiro(RIAM, Kyushu University), Mitsudera Humio, Yamashiki Yosuke(GSAIS Kyoto University)

1:45 PM - 2:00 PM

[AOS14-01] Development of the high-accuracy topography data for land hydrodynamic modelling

*Dai Yamazaki1 (1.Institute of Industrial Sciences, The University of Tokyo)

Keywords:Topography data, Surface water, Modelling

Surface water dynamics can be described by relatively-simple governing equations, and it is not so difficult to construct a conveptual model. However, if we target to simulate the surface water dynamics of the actual world, high-accuracy topography datasets are required as boundary conditions. In developed countries such as Japan, a high-precision airborne DEM is often availale, but for most of the world spaceborne DEM (with non-negligible errors) is usually the only available source. Datasets on hydrography and under-water topography are usually not available in many parts of the world. In this presentation, latest works on high-accuracy topography data development in U-Tokyo will be introduced.