Japan Geoscience Union Meeting 2018

Presentation information

[EE] Poster

M (Multidisciplinary and Interdisciplinary) » M-TT Technology & Techniques


Sun. May 20, 2018 3:30 PM - 5:00 PM Poster Hall (International Exhibition Hall7, Makuhari Messe)

convener:Yuichi S. Hayakawa(Center for Spatial Information Science, The University of Tokyo), Christopher A Gomez (Kobe University Faculty of Maritime Sciences Volcanic Risk at Sea Research Group), Shigekazu Kusumoto(富山大学大学院理工学研究部(理学))

[MTT35-P02] Clarification of short-term topographic change in the Kujukuri coastal sand dunes using UAS-SfM photogrammetry

*Lee Seulgi1, Yasutaka Nakata1, Takashi Oguchi1 (1.The University of Tokyo)

Keywords:Coastal dune, UAS-SfM

This study discusses change in the small-scale topography of Kujukuri coastal dune located in Chiba Prefecture, Japan. Throughout the study, we investigated the short-term formation mechanism of the dune. Previous studies dealt with these dunes because they represent large coastal dune in Japan and their fast change allows us to examine the dynamics of coastal dunes. This study focuses on a relatively short time period. Studies on topographic change during a short period has gained recent attention because of the increased availability of high-resolution topographic data from newly advanced techniques such as unmanned aerial system-based structure-from-motion (UAS-SfM) photogrammetry and terrestrial laser scanning (TLS). Our detailed data were acquired through UAS-SfM photogrammetry, and aerial photographs of the past 70 years were also used for observing general topographic change. We targeted dynamics of sand dunes with the natural state and tried to clarify short-term topographic change due to sand movement.