Japan Geoscience Union Meeting 2016

Presentation information


Symbol S (Solid Earth Sciences) » S-VC Volcanology

[S-VC49] Real-time volcanology: Integration of geophysical and material science observations and physical modeling

Tue. May 24, 2016 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall HALL6)

Convener:*Satoshi Okumura(Division of Earth and Planetary Materials Science, Department of Earth Science, Graduate School of Science, Tohoku University), Tomofumi Kozono(Department of Geophysics, Graduate School of Science, Tohoku University), Yosuke Aoki(Earthquake Research Institute, University of Tokyo)

5:15 PM - 6:30 PM

[SVC49-P01] Volcano monitor using broadcast satellite signals

*Hiroshi Takiguchi1, Tadahiro Gotoh1, Masatake Harada2, Jun Amagai1, Mikio Satomura2 (1.Applied Electromagnetic Research Institute, National Institute of Information and Communications Technology, 2.Hot Springs Research Institute of Kanazawa Prefecture)

Keywords:volcano, VLBI, broadcast satellite

We cannot see the change of an internal active volcano condition directly by its geography then, perceiving of its activities is difficult. To mitigate disasters by eruption, continuous volcano activity monitoring system will be desired. Most active volcanoes radiate internal thermal energy as a water vapor, and this radiation is increase with increasingly active volcano. The propagation speed of electromagnetic signal in the neutral atmosphere is delayed by the change of refractivity, which is a function its temperature, pressure, and water vapor. Therefore, to measure the propagation delay changes on volcano crater may be possible to estimate the vitalization of active volcano. We have devised a volcano activity monitor using broadcast satellite signals. In this presentation, we describe the details of the system, and show the result of feasibility survey at Hakone.