Japan Geoscience Union Meeting 2018

Presentation information

[JJ] Poster

M (Multidisciplinary and Interdisciplinary) » M-IS Intersection

[M-IS19] Atmospheric electricity

Tue. May 22, 2018 3:30 PM - 5:00 PM Poster Hall (International Exhibition Hall7, Makuhari Messe)

convener:Yasuhide Hobara(Graduate School of Information and Engineering Department of Communication Engineering and Informatics, The University of Electro-Communications), Masashi Kamogawa(Department of Physics, Tokyo Gakugei University)

[MIS19-P05] Charge change estimation at short-burst energetic radiation during the Blizzard

*Masashi Kamogawa1, Yasuhiro Minamoto1, Akira Kadokura2, Naohiko Hirasawa2, Mitsuteru Sato3 (1.Department of Physics, Tokyo Gakugei University, 2.National Institute of Polar Research, 3.Hokkaido University, Graduate School of Science)

Keywords:Atmospheric electric field, Blizzard, Snow particle

We investigate the atmospheric electric field (AEF) variation caused by the blizzard at Syowa station, Antarctica, using the field mill, laser precipitation monitor (LPM). Two field mill sensor was installed at the 10 and 1 meter height. During the blizzard (wind speed more than 6 m/s), the AEF mostly showed the intense positive (fair-weather-directoin) values, which originates from the negatively charged snow gradient. However, during some periods, the AEF showed negative values. Comparing two different height AEF with LPM, the sudden LPM showed seldom particles after the blizzard, so that the AEF showed negative. Our interpretation was that the termination of the blizzard disturbed the gradient, i.e. negative AEF occurrence.