[S-EM20] Electric and Electromagnetic survey technologies and the scientific achievements: Recent advances

[SEM20-04] Anatomy of Active Volcanic Edifice at the Kusatsu-Shirane Volcano, Japan, by Magnetotellurics: Hydrothermal Implications for Volcanic Unrests

Kuo Hsuan Tseng¹, *Yasuo Ogawa¹, Nurhasan Nurhasan¹, Sabri Bülent Tank¹, Yoshimori Honkura¹, Naoto Ujihara¹, Akihiko Terada¹, Yoshiya Usui¹, Wataru Kanda¹ (1.Volcanic Fluid Research Center, School of Science, Tokyo Institute of Technology)

One-off sessions

[J] Poster
| S (Solid Earth Sciences )
| S-VC Volcanology

[S-VC44] Hydrothermal systems of volcanoes

[SVC44-P02] Water chemistry of fluid supplied from subaqueous fumaroles of Yugama crater lake, Kusatsu-Shirane volcano, inferred from geochemical heterogeneities of lake water

*Leona Suzuki¹, Akihiko Terada¹, Muga Yaguchi², Masanori Takahashi¹, Takeshi Ohba³ (1.Tokyo Institute of Technology, 2.Meteorological Research Institute,JMA, 3.Department of chemistry,School of Science,Tokai University)

One-off sessions

[J] Oral
| S (Solid Earth Sciences )
| S-VC Volcanology

[S-VC45] Active Volcanism

[SVC45-13] Observation campaign of seismic activity and geochemistry of hot spring waters at western flank of Kusatsu-Shirane volcano, Japan

*Akihiko Terada¹, Akira Katori¹, Muga Yaguchi², Mare Yamamoto³, Taishi Yamada⁴, Shin'ya Onizawa², Tatsuji Nishizawa¹, Hiroshi Aoyama⁵, Yuichi Morita⁷, Takeshi Ohba⁶ (1.Volcanic Fluid Research Center, School of Science, Tokyo Institute of Technology, 2.Meteorological Research Institute, JMA, 3.Graduate School of Science, Tohoku University, 4.Disaster Prevention Research Institute, Kyoto University, 5.Faculty of Science, Hokkaido University, 6.Department of chemistry, School of Science, Tokia University, 7.Earthquake Research Institute, University of Tokyo)

[SVC45-14] Secular change in the chemical composition of lake water within Yugama crater at Kusatsu-Shirane volcano

*Muga Yaguchi¹, Takeshi Ohba², Akihiko Terada³ (1.Volcanology Research Department, Meteorological Research Institute, Japan Meteorological Agency, 2.Department of Chemistry, School of Science, Tokai University, 3.Volcanic Fluid Research Center, School of Science, Tokyo Institute of Technology)

[SVC45-15] Helium isotope ratios at Kusatsu-Shirane volcano

*Hirochika Sumino¹, Kotaro Toyama¹, Takeshi Ohba², Muga Yaguchi³, Akihiko Terada⁴ (1.Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 2.Department of Chemistry, School of Science, Tokai University, 3.Meteorological Research Institute, Japan Meteorological Agency, 4.Volcanic Fluid Research Center, Tokyo Institute of Technology)

[SVC45-16] Soil diffuse degassing around the active crater lake at Kusastu-Shirane volcano: Measurements of helium isotope and gaseous elemental mercury of soil gases

*Masanori Takahashi¹, Akihiko Terada¹, Hirochika Sumino², Kotaro Toyama², Takeshi Ohba³, Leona Suzuki¹ (1.Volcanic Fluid Research Center, Tokyo Institute of Technology, 2.Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 3.Department of chemistry, School of Science, Tokai University)

One-off sessions

[J] Poster
| S (Solid Earth Sciences )
| S-VC Volcanology

[S-VC45] Active Volcanism

[SVC45-P39] Multi-sensor system with air blowers for airborne volcanic gas survey using drones: an improvement of a sensor response time

*Kohki Matsuura¹, Akihiko Terada¹, Toshiya Mori², Takato Ono² (1.Volcanic Fluid Research Center, Tokyo Institute of Technology, 2.Chemical Research Center, Graduate School of Science, The Univercity of Tokyo)

Akihiko Terada

Speaker, Author, Co-Author