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Observation of lightning hitting Tokyo Skytree, a 634-m high freestanding broadcasting tower, started in February 2012. In 2012 and 2013, current waveforms associated with 24 lightning flashes have been obtained by specially designed wide-band Rogowski coils installed at a height of 497m. The ratio of upward lightning is quite different in 2012 and 2013. In addition to these, we have observed development...
Observation of lightning current by using Rogowski coils started in February 2012 at Tokyo Skytree, which is a 634-m high freestanding broadcasting tower. Electromagnetic field waveforms are also observed by capacitive antennas at several tens of kilometers from the tower. Lightning current and electric field waveforms simultaneously observed in May 2012 are reproduced by using an electromagnetic...
It was revealed that serious lightning faults of high voltage power transmission lines in winter along the coastal area of the Sea of Japan were due to upward lightning initiated from transmission towers. Wind turbines in the same region, reportedly suffer from high lightning fault rate, must also generate frequent upward lightning. Taking account of the aerological data which indicate the heights...
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