Japan Geoscience Union Meeting 2021

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[J] Oral

A (Atmospheric and Hydrospheric Sciences ) » A-CG Complex & General

[A-CG42] Water and sediment dynamics from land to coastal zones

Thu. Jun 3, 2021 1:45 PM - 3:15 PM Ch.11 (Zoom Room 11)

convener:Shinichiro Kida(Research Institute for Applied Mechanics, Kyushu University), Yuko Asano(The University of Tokyo), Keiko Udo(International Research Institute of Disaster Science, Tohoku University), Dai Yamazaki(Institute of Industrial Sciences, The University of Tokyo), Chairperson:Dai Yamazaki(Institute of Industrial Sciences, The University of Tokyo), Keiko Udo(International Research Institute of Disaster Science, Tohoku University), Yuko Asano(The University of Tokyo), Shinichiro Kida(Research Institute for Applied Mechanics, Kyushu University)

2:15 PM - 2:30 PM

[ACG42-03] River survey using airborne laser bathymetry (ALB) and its applications

★Invited Papers

*Keigo Nakamura1 (1.Public Works Research Institute)

Keywords:river survey, ALB, BIM

In the rivers throughout the country, periodic transverse survey by actual measurement is being carried out for the purpose of planning river management and river improvement. However, survey under the water has caused danger in working especially in a rapid river, and it takes a great deal of time to measure one survey line. To solve this problem, river survey was carried out by using ALB which is a recently-developed technique and can measure under the water surface. In this study, in order to create a cross section from point cloud data by using ALB which can perform underwater measurement in recent years, the accuracy verification with the actual measurement was carried out and the transverse map drawing was made in survey under the water surface. We also considered the application to river management that makes full use of the characteristics of aviation laser measurement.