Japan Geoscience Union Meeting 2018

Presentation information

[EE] Oral

M (Multidisciplinary and Interdisciplinary) » M-IS Intersection

[M-IS04] Thunderstorms and lightning as natural hazards in a changing climate

Sun. May 20, 2018 1:45 PM - 3:15 PM A01 (Tokyo Bay Makuhari Hall)

convener:Mitsuteru Sato(Department of Cosmoscience, Hokkaido University), Hisayuki Kubota(Hokkaido University), Kozo Yamashita(足利工業大学工学部, 共同), Yukihiro Takahashi(Department of Cosmosciences, Graduate School of Science, Hokkaido University), Chairperson:Takahashi Yukihiro(Hokkaido University), Sato Mitsuteru(Faculty of Science, Hokkaido University), Yamashita Kozo(Department of Technology, Ashikaga Institute of Technology)

2:15 PM - 2:30 PM

[MIS04-09] Varactor based Electric Field Sensor for Lightning Early Warning System and Response Study.

*Sebin Sabu1, Rizwin Muhammed1, Nora Elizabeth Joby2, Premlet B1 (1.TKM College of Engineering,Kollam, 2.National Institute of Technology,Calicut)

Keywords:Lightning, Sensor

Electric field mills are used popularly for atmospheric electric field measurements. Atmospheric Electric Field variation is the primary signature for Lightning Early Warning systems. There is a characteristic change in the atmospheric electric field before lightning during a thundercloud formation.
A voltage controlled variable capacitance is being proposed as a method for non-contacting measurement of electric fields. A varactor based mini electric field measurement system is developed, to detect any change in the atmospheric electric field and to issue lightning early warning system.

Since this is a low-cost device, this can be used for developing countries which are facing adversities. A network of these devices can help in forming a spatial map of electric field variations over a region, and this can be used for more improved atmospheric electricity studies in developing countries.An analysis on the response of the device against thunderstorm causing electric field simulations were done and analysed.