The start of lightning: evidence of bidirectional lightning initiation
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Cita com:
hdl:2117/78493
Tipus de documentArticle
Data publicació2015-10-18
EditorMacmillan Publishers
Condicions d'accésAccés obert
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continguts d'aquesta obra estan subjectes a la llicència de Creative Commons
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Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
Abstract
Lightning flashes are known to initiate in regions of strong electric fields inside thunderstorms,
between layers of positively and negatively charged precipitation particles. For that reason, lightning
inception is typically hidden from sight of camera systems used in research. Other technology such
as lightning mapping systems based on radio waves can typically detect only some aspects of the
lightning initiation process and subsequent development of positive and negative leaders. We report
here a serendipitous recording of bidirectional lightning initiation in virgin air under the cloud base at
~11,000 images per second, and the differences in characteristics of opposite polarity leader sections
during the earliest stages of the discharge. This case reveals natural lightning initiation, propagation
and a return stroke as in negative cloud-to-ground flashes, upon connection to another lightning
channel – without any masking by cloud.
CitacióMontaña, J., Van Der Velde, O., Williams, E.R. The start of lightning: evidence of bidirectional lightning initiation. "Scientific reports", 18 Octubre 2015, vol. 5, núm. 15180.
ISSN2045-2322
Versió de l'editorhttp://www.nature.com/srep/
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