JpGU-AGU Joint Meeting 2017

Presentation information

[JJ] Oral

M (Multidisciplinary and Interdisciplinary) » M-IS Intersection

[M-IS18] [JJ] Atmospheric electricity

Mon. May 22, 2017 10:45 AM - 12:15 PM 304 (International Conference Hall 3F)

convener:Masashi Kamogawa(Department of Physics, Tokyo Gakugei University), Chairperson:Takeshi Morimoto(Kindai University), Chairperson:Tomoo Ushio(Osaka University)

12:00 PM - 12:15 PM

[MIS18-06] Ground observation of thermal neutrons from Terrestrial Gamma-ray Flash above wind turbine

*Gregory S Bowers1, David M Smith1, Masashi Kamogawa2, Shusa Takahashi2, Akiko Ishikawa2, Stan Heckman3, Michael Stock3, Steve Cummer4, Daohong Wang5, Yasuhide Hobara6, Zen Kawasaki7 (1.University of California Santa Cruz, 2.Tokyo Gakugei University, 3.Earth Networks, 4.Duke University, 5.GIFU University, 6.The University of Electro-Communications, 7.Osaka University )

Keywords:Lightning, Terrestrial Gamma-Ray Flash, TGF, Radiation, Neutron, Wind Turbine

During a thunderstorm on December 3rd, 2015, coincident with an upward leader originating from a lightning protection tower next to the wind turbine in Uchinada, the Gamma-ray Observations During Overhead Thunderstorms (GODOT) instrument observed a large, ~100ms duration, flux of radiation with a spectral signature characteristic of thermal neutron production. We will present our observations and show comparisons to monte-carlo simulations, proposing that we have the observed the first neutron glow from a Terrestrial Gamma-ray Flash, produced by photonuclear reactions of gamma-rays with the air and ground molecules around the wind turbine.