[SVC41-P40] Deformation of Iwo-yama, Kirishioma volcanoes measured by GNSS campaign observation (Aug. - Dec., 2017)
Keywords:Iwoyama, GNSS observation
As preliminary observation, we conducted GNSS campaign observation to detect deformation of iwo-yama from August 2017 to December 2017. We installed 12 observation points in June 2017 and measured three times in August (4 points), November (11 points), December (12 points), 2017 at Iwo-yama. We used GNSS analysis software RTNet to analyze obtained data. Determined coordinated value's dispersion is 1.0 cm in horizontal component and 3.0 cm vertical component. But deformation of Iwo-yama between November 2 and December 24 is several millimeters; we could not detect significant deformation at any observation points during these periods.
This work was supported by MEXT Integrated Program for Next Generation Volcano Research and Human Resource Development.