On Lightning Discharges in Winter Thunderstorm
On Lightning Discharges in Winter Thunderstorm
复制标题
冬季雷暴中的闪电放电
DOI：
10.1007/978-3-642-85294-7_95
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发表时间：
1973
影响因子：
3.1
通讯作者：
Masahiro Nagatani
中科院分区：
文献类型：
--
作者：
T. Takeuti;Minoru Nakano;Masahiro Nagatani
1972/73年和1973/74年在金泽附近的Unoke进行了冬季雷暴闪电放电的观测。观测到的主要特征如下：放电频率的日变化并不在冬季下午出现高峰，雷暴按每天的放电次数分为两组。其中一组的放电次数是前一组的一到两次，另一组的放电次数是前者的十倍左右。电场的极性变化明显不随观测点到放电的距离而改变，这表明有一条水平的云放电通道。只有十分之一的地面放电像夏季的地面放电一样，将负电荷从云带到地面，其余九种则降低了正电荷。
Observations of lightning discharges in winter thunderstorms were made during 1972/73 and 1973/74 at Unoke near Kanazawa. The main characteristics observed are as follows.A diurnal variation of discharge frequencies does not show peak activity in winter afternoon.The thunderstorms are divided into two groups with respect to number of discharges a day. One group is characterized by the discharge number of one or two and the other by about ten times the former.The polarity of field change does apparently not change with the distance between the observing site and the discharge, this points to a horizontal channel of cloud discharge.Only one out of ten ground discharges brought down a negative charge from cloud to the earth, as usual ground discharges do in summer, and the other nine lowered a positive charge.