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))

10:03 AM - 10:06 AM

[HTT08-P02] Ground surface deformation of small mud volcano by repeated measurements of terrestrial laser scanning (Murono, Japan)

3-min talk in an oral session

*Yuichi S. HAYAKAWA1, Shigekazu KUSUMOTO2, Nobuhisa MATSUTA3 (1.Univ. Tokyo, 2.Toyama Univ., 3.Okayama Univ.)

We perform terrestrial laser scanning to detect changes in surface morphology of a mud volcano in Murono, Niigata Prefecture, north-central Japan. The study site underwent significant deformation by the strong earthquakes in 2011, and the surface deformation has continued in the following years. The point cloud datasets at different scan times were registered by minimizing the closest point distance of the point clouds at stable ground features, and centimeter-order deformations in the central domain of the mud volcano were detected. The spatial pattern of the deformation, together with some geophysical measurement data, will be used for analysis of physical mechanics of the mud volcano.