Study of the effect of propagation path on lightning-produced electromagnetic pulses based on LLN data

Xueyun Ding, Mingli Chen, Ya Ping Du

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

Lightning Location Network (LLN) has been used world-widely to report the peak current of a lightning return stroke based on the assumption that the peak current is proportional to the product of the amplitude of lightning-produced electromagnetic pulse (LEMP) and the source distance. However, this assumption is challenged by the data of rocketed-triggered return strokes. In this study, we propose a statistical approach for identifying the effect of earth path on the LEMP amplitude based on the LLN data. With the data from a Chinese regional LLN, it is found that the product of the LEMP amplitude and the source distance might be quite different at different distances for the same lightning stroke. A coefficient reflecting the effect of propagation path on the LEMP amplitude is defined. It is found that this path effect coefficient varied significantly at different distances and directions to a given sensor. Theoretical explanations for these findings are also explored. The findings are helpful to practically the correction of lightning peak current reported by a LLN, and theoretically the understanding of the rules of electromagnetic pulses propagating over the earth surfaces.
Original languageEnglish
Title of host publication2012 31st International Conference on Lightning Protection, ICLP 2012
DOIs
Publication statusPublished - 12 Dec 2012
Event2012 31st International Conference on Lightning Protection, ICLP 2012 - Vienna, Austria
Duration: 2 Sep 20127 Sep 2012

Conference

Conference2012 31st International Conference on Lightning Protection, ICLP 2012
CountryAustria
CityVienna
Period2/09/127/09/12

Keywords

  • Lightning location network
  • propagation path
  • return stroke current electromagnetic pulse

ASJC Scopus subject areas

  • Environmental Engineering

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