【摘要】 本文介绍了1980年冬和1981年冬在广东省湛江地区(磁纬9.8°N)观测哨声的结果。观测记录表明,不仅可以收录到大量的短哨及其回波,而且还观测到一些少见的现象;分析结果表明,它们似乎具有导管传播的特征,地面哨声的“截止纬度”有可能低于磁纬9.8°N。更多还原

【Abstract】 Results from whistler observation over Zhanjiang Region (Mag. Lat. 9.8#N), Kwang-tung, China, in winter, 1980 and in winter, 1981 are described. A great number of short whistlers and their echoes were recorded. A preliminary analysis of the records shows that they seem to have the characteristics of duct propagation. Besides, some phenomena rarely seen before were also recorded. This observational result implies that the "cut-off latitude "of ground whistlers might be lower than 9.8#N.更多还原