Papers Published
- Lu, G; Cummer, SA, Implications of lightning emissions for terrestrial gamma-ray flashes and associated lightning discharges,
2014 International Conference on Lightning Protection, Iclp 2014
(December, 2014),
pp. 1496-1502, IEEE [doi] .
(last updated on 2023/06/01)Abstract:
Remote sensing of broadband (<1 Hz to 300 kHz) lightning signals related to terrestrial gamma-ray flashes (TGFs) indicates that gamma-rays in TGFs are typically produced during a slow process that creates a considerable charge moment change within a few milliseconds. This slow process is usually punctuated by one or more fast discharges one of which is involved in gamma-ray production. The observed complexity of TGF-associated lightning emissions can be interpreted in the context of the initial development of normal intra-cloud lightning flashes, where the upward negative leader drives the millisecond-scale current and may also provide the seed electrons for avalanche multiplication in the upper part of active thunderstorms.