Propagation effects on the electric field time derivatives generated by return strokes in lightning flashes |
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| Institution: | 1. Department of Physics, University of Colombo, Sri Lanka;2. Division of Electricity and Lightning Research, University of Uppsala, Sweden;1. Department of Physical Sciences, Grand Rapids Community College, Grand Rapids, MI, USA;2. Department of Physics, Oklahoma State University, Stillwater, OK, USA;3. School of Meteorology, University of Oklahoma, Norman, OK, USA;1. Russian Federal Nuclear Center - VNIIEF, Mir av., 38, Sarov, Nizhni Novgorod oblast 607188, Russia;2. National Space Institute, Technical University of Denmark, Electrovej Bld.327, 2800 Kgs. Lyngby, Denmark;1. Department of Electrical and Computer Engineering, University of Florida, Gainesville, Fl 32611, USA;2. Space Science Center (EOS), Department of Physics, University of New Hampshire, Durham, NH 03824, USA;3. Thunderstorm Systems and Data Division, Vaisala Inc., Louisville, CO 80027, USA;4. Earth Networks, 1240 Milestone Center Drive, Suite 300, Germantown, MD 20876, USA;3. From the Departments of Bioengineering,;5. Medicine,;6. Chemistry and Biochemistry,;12. Pediatrics, and;9. Cellular and Molecular Medicine,;4. Bioinformatics and Systems Biology Graduate Program,;8. Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla, California 92093 |
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| Abstract: | The effects of propagation over finitely conducting ground on the features of radiation component of the electric field time derivatives are investigated. The results show that the peak, the half-width and the risetime of the electric field time derivative change significantly in propagating over finitely conducting ground. Furthermore, any correlation that may exist between various parameters could also change significantly due to propagation effects. Consequently, in return stroke model validations using experimentally measured fields, remote sensing of return stroke current time derivatives using measured electric field time derivatives and in the calculation of induced voltages generated by lightning flashes in electrical installations the distortions caused by propagation effects on the electric field time derivatives cannot be neglected. |
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