Propagation effects of a fractal rough ocean surface on the vertical electric field generated by lightning return strokes |
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| Authors: | Qilin Zhang Jing Yang Dongshuai Li Zhenhui Wang |
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| Affiliation: | 1. Key Laboratory of Meteorological Disaster of Ministry of Education (KLME), Nanjing University of Information Science & Technology, Nanjing 210044, PR China;2. Laboratory for Middle Atmosphere and Global Environment Observation (LAGEO), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, PR China;3. College of Atmospheric Physics, Nanjing University of Information Science & Technology, Nanjing 210044, PR China |
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| Abstract: | Based on an improved two-dimension (2D) fractal model of rough ocean surface, the propagation effects of the rough ocean surface on the vertical electric fields generated by lightning return strokes are analyzed. The results show that the rough ocean surface has much effect on the electric field derivatives, but has no or little effect on the field peaks. The frequency above 10 MHz is attenuated significantly by the rough ocean surface, and the rapid attenuation of frequency above 10 MHz in the experimentally obtained spectrum may be taken into account the errors introduced by the roughness of the ocean surface. |
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