Japan Geoscience Union Meeting 2015

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International Session (Oral)

Symbol H (Human Geosciences) » H-TT Technology & Techniques

[H-TT08] Geoscientific applications of high-definition topography and geophysical measurements

Tue. May 26, 2015 9:00 AM - 10:45 AM 101B (1F)

Convener:*Yuichi S. Hayakawa(Center for Spatial Information Science, The University of Tokyo), Hiroshi, P. Sato(College of Humanities and Sciences, Nihon University), Shigekazu Kusumoto(Graduate School of Science and Engineering for Research, University of Toyama), Shoichiro Uchiyama(National Research Institute for Earth Science and Disaster Prevention), Chair:Yuichi S. Hayakawa(Center for Spatial Information Science, The University of Tokyo), Hiroshi, P. Sato(College of Humanities and Sciences, Nihon University), Shoichiro Uchiyama(National Research Institute for Earth Science and Disaster Prevention), Shigekazu Kusumoto(富山大学大学院理工学研究部(理学))

9:00 AM - 9:15 AM

[HTT08-01] Accuracy evaluation of UAV-measured DSM by RTK-GPS on Midori fault scarp of Neodani active fault, Gifu Prefecture, Japan

*Hiroshi, P. SATO1, Shoichiro UCHIYAMA2 (1.College of Humanities and Sciences, Nihon Univ., 2.National Research Institute for Earth Science and Disaster Prevention)

Keywords:fault, UAV, GPS, RTK, DSM, VRC

Accuracy of UAV (Unmanned Aerial Vehicle) -measured DSM (Digital Surface Model, Uchiyama et al., 2014) was evaluated using RTK (Real-Time Kinematic) GPS survey on Midori fault scarp of Neodani active fault, Gifu Prefecture, Japan. The accuracy was evaluated on the surveyed six control points at the accuracy not more than 8 mm in plane. As a result, 3 cm, -8 - -9 cm, -5 - -7cm in difference were found at three points on the top of the scarp. And ca.40 cm, -3 - -4 cm, -0.6 - -2 cm were at three points on the bottom of the scarp. Apart from 40 cm-difference at the one point, approximately less than 10 cm was revealed as measurement accuracy for the DSM.



Acknowledgement
Survey result of RTK-GPS using virtual reference station was given by Tamano consultants Co.,Ltd.


Reference
Uchiyama et al., 2014, Mapping active faults by using small unmanned aerial vehicle and structure from motion software: A case study on Midori fault scarp formed by the 1891 Nobi earthquake, Active fault study, 40, 35-41.