2026-04-19T09:19:56Zhttps://recercat.cat/oai/request

oai:recercat.cat:2117/852872025-07-17T05:33:25Zcom_2072_1033col_2072_452950

Total lightning detections of lightning flashes recorded by means of high-speed videos Montañá Puig, Juan Van der Velde, Oscar Arnoud Romero Durán, David March Nomen, Víctor Solà de las Fuentes, Glòria Pineda Ruegg, Nicolau Universitat Politècnica de Catalunya. Departament d'Enginyeria Elèctrica Universitat Politècnica de Catalunya. LRG - Lightning Research Group Àrees temàtiques de la UPC::Energies::Energia elèctrica::Electricitat Lightning Electric fields Thunderstorm forecasting high speed video lightning VHF total lightning x-rays Llamps Camps elèctrics Tempestes A detailed analysis of two lightning flashes is presented. High speed video, total lightning detections and electric field measurements are the basis of the study. In general, the observed negative cloud-to-ground flashes do not produced many VHF detections . In the negative flash, most of the detections are given in the fast increase of electric field at the beginning of the dart leader. An intriguing feature during negative leaders is the fast illumination of some branches especially at the time when the leader is approaching the ground. In the case of positive cloud-to-ground flashes, a frenetic recoil leader activity occurs before the return stroke. In the presented case, recoil leader rates increase before the return stroke. The VHF network reported a large amount of detections. Those detections are not correlated with recoil leaders but with continuous current transfer to the ground. Postprint (published version) 2011 Conference report Montaña, J., Van Der Velde, O., Romero, D., March, V., Sola, G., Pineda, N. Total lightning detections of lightning flashes recorded by means of high-speed videos. A: International Conference on Atmospheric Electricity. "ICAE 2011". Rio de Janeiro: 2011. https://hdl.handle.net/2117/85287 eng http://icae.jp/ info:eu-repo/grantAgreement/MICINN//AYA2011-29936-C05-04/ES/ATMOSPHERE-SPACE INTERACTIONS MONITOR. CONTRIBUCION DE LA UPC/ Restricted access - author's decision application/pdf