[9a-E204-1~9] 2.2 Radiation generators, Detector development, Measurement technology

9:15 AM - 9:30 AM JST(12:15 AM - 12:30 AM UTC)

[9a-E204-2] 3D Visualization of Branching Volcanic Conduits Using Multidirectional Muography

〇Seigo Miyamoto¹, Shogo Nagahara², Kunihiro Morishima², Toshiyuki Nakano², Masato Koyama³, Yusuke Suzuki⁴ (1.Univ. Tokyo, 2.Nagoya Univ., 3.Shizuoka Univ., 4.STORY Co., Ltd.)

Keywords:

muon,muongraphy,volcanology

We present a three-dimensional visualization of branching volcanic conduits in the Omuroyama scoria cone, Higashi-Izu monogenetic volcano field, Japan, based on multidirectional muography. Nuclear emulsion detectors installed at 11 sites around the volcano recorded cosmic-ray muon tracks, from which three-dimensional density structures were reconstructed by linear inversion. The resulting high-density zones are interpreted as a highly welded central vent and radial dikes extending in three directions. These structures provide constraints on magma pathways, flank eruption processes, and the formation history of the scoria cone.