Abstract
We present the channel geometries and vertical profiles of tortuosity for five natural lightning flashes and seven triggered flashes photographed in Florida. The tortuosity variation with height was quantified using the tortuosity measurement method of Hill applied over successive 200 m vertical sections. Total channel lengths analyzed were between 1 km and 1.5 km. The triggered channels often show a significant reduction of tortuosity with height; the natural flashes show no apparent trend of tortuosity variation with height. A time‐resolved record of one of the triggered flashes reveals an abrupt doubling in speed of the upward leader associated with a sharp reduction in channel tortuosity. This observation suggests that positive lightning leaders may manifest decreased tortuosity when driven by larger fields.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
