CALIBRATION OF A MAGNETIC DIRECTION FINDING NETWORK USING MEASURED TRIGGERED LIGHTNING RETURN STROKE PEAK CURRENTS Academic Article uri icon

abstract

  • The following have been determined: 1) The normalized signal strength amplitudes in LLP units, can be used to estimate the peak current in lightning return strokes by the relation, I(kA) = 2.3 + 0.19(Normalized Amplitude), where the amplitude is range-normalized to 100 km. 2) It is found that a DFs normalized amplitude has a higher correlation with peak currents, the further the DF site is from the triggered lightning. The correlation coefficients range from 0.53 to 0.93. 3) Signal strength amplitudes, which are proportional to the peak magnetic radiation fields, have been examined for seven triggered lightning return strokes. The signal strength amplitudes decay with distance, D, as D-1.13. 4) The mean amplitude is typically in error by less than 2% from the value calculated using the exact location of the triggered flash. -from Author

published proceedings

  • JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES

author list (cited authors)

  • ORVILLE, R. E.

citation count

  • 76

complete list of authors

  • ORVILLE, RE

publication date

  • September 1991