An upward negative lightning flash triggered by a distant +CG from a tall tower in Florida: Observations and modeling

The article discusses how current mediated conditions change nature perception from a media study perspective. The article is based on different case studies such as the current sensation of atmospheric change through sensible media attached to trees which get published via Twitter, the meteorologist Amazonian Tall Tower Observatory and the use of gutta percha derived from tropical trees for the production of cables in the history of telegraphy. For analysing the examples, the perspective of »media as environments« is flipped to »environments as media«, because this focus doesn’t approach media from a networked and technological perspective primarily but makes productive the elemental character of basic »media« like air, earth and water

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Investigation of Zero Crossing Detection for First Return Stroke in Negative Cloud-to-Ground Lightning Flash

International Journal of Integrated Engineering ◽

10.30880/ijie.2019.11.03.031 ◽

2019 ◽

Vol 11 (3) ◽

Author(s):

Ahmad Idil Abd Rahman ◽

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Muhammad Akmal Bahari ◽

Zikri Abadi Baharudin ◽

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...

Keyword(s):

Lightning Flash ◽

Return Stroke ◽

Zero Crossing ◽

Cloud To Ground Lightning

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Leader-chasing behavior in negative artificial triggered lightning flashes

Scientific Reports ◽

10.1038/s41598-021-90940-x ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Fukun Wang ◽

Jianguo Wang ◽

Li Cai ◽

Rui Su ◽

Wenhan Ding ◽

...

Keyword(s):

High Speed ◽

The Other ◽

Lightning Flash ◽

High Speed Camera ◽

Return Stroke ◽

Catching Up ◽

Special Cases ◽

Triggered Lightning

AbstractTwo special cases of dart leader propagation were observed by the high-speed camera in the leader/return stroke sequences of a classical triggered lightning flash and an altitude-triggered lightning flash, respectively. Different from most of the subsequent return strokes preceded by only one leader, the return stroke in each case was preceded by two leaders occurring successively and competing in the same channel, which herein is named leader-chasing behavior. In one case, the polarity of the latter leader was opposite to that of the former leader and these two combined together to form a new leader, which shared the same polarity with the former leader. In the other case, the latter leader shared the same polarity with the former leader and disappeared after catching up with the former leader. The propagation of the former leader in this case seems not to be significantly influenced by the existence of the latter leader.

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