Research Terms
Electrical Engineering Electromagnetism
2012
On Remote Measurements of Lightning Return Stroke Peak Currents, Journal Atmospheric Research (2012), http://dx.doi.org/10.1016/j.atmosres.2012.08.008, S. Mallick, V. A. Rakov, D. Tsalikis, A. Nag, C. Biagi, D. Hill, D. M. Jordan, M.A. Uman and J. A. Cramer
Geometrical and Electrical Characteristics of the Initial Stage in Florida Triggered Lightning, Geophys. Res. Lett. Vol. 39, L09807, doi:10.1029/2012GL051932, 2012, J. D. Hill, J. T. Pilkey, M. A. Uman, D. M. Jordan, W. Rison, and P. R. Krehbiel
Observation of a gamma-ray flash at ground level in association with a cloud-to-ground lightning return stroke, J. Geophysical Research, 117, (2012) A10303, doi:10.1029/2012JA017810, J. R. Dwyer, M. M. Schaal, E. Cramer, S. Arabshahi, N. Liu, H. K. Rassoul, J. D. Hill, D. M. Jordan, and M. A. Uman
Characteristics of the initial rising portion of near and far lightning return stroke electric field waveforms, J. Atmospheric Research, 117, (2012), 71-77, doi:10.1016/j.atmosres.2011.08.012, A. Nag, V. A. Rakov, D. Tsalikis, J. S. Howard, C. J. Biagi,J. D. Hill, M. A. Uman, and D. M. Jordan
Spatial and Energy Distributions of X-Ray Emissions from Leaders in Natural and Rocket Triggered Lightning, J. Geophys. Res., Vol. 117, D15201, doi:10.1029/2012JD017897, 2012, M. M. Schaal, J. R. Dwyer, Z. H. Saleh, H. K. Rassoul, J. D. Hill, D. M. Jordan and M. A. Uman
Transient Current Pulses in Rocket-extended Wires Used to Trigger Lightning, J. Geophys. Res., Vol. 117, D07205, doi:10.1029/2011JD016161, 2012, C. J. Biagi, M. A. Uman, J. D. Hill, V. A. Rakov, and D. M. Jordan
Current Waveforms for Lightning Simulation, IEEE Trans. on EMC, doi:10.1109/TEMC. 2011.2176131, 2011, W. R. Gamerota, J. O. Elismé, M. A. Uman and V. A. Rakov
“Chaotic” Dart Leaders in Triggered Lightning: Electric Fields, X-rays, and Source Locations, J. Geophys. Res., Vol. 117, D03118, doi:10.1029/2011JD016737, 2012, J. D. Hill, M. A. Uman, D. M. Jordan, J. R. Dwyer, and Hamid Rassoul
The Initial Stage Processes of Rocket-and-Wire Triggered Lightning as Observed by VHF Interferometry, J. Geophys. Res. Vol.117, D09119, doi:10.1029/2010JD017657, 2012, S. Yoshida, C. J. Biagi, V. A. Rakov, J. D. Hill, M. V. Stapleton, D. M. Jordan, M. A. Uman, T. Morimoto, T. Ushio, Z.I. Kawasaki, M. Akita
2011
Observations of the initial, upward-propagating, positive leader steps in a rocket-and-wire triggered lightning discharge, Geophys. Res. Lett., Vol. 38, doi:10.1029/2011GL049944, 2011, C. J. Biagi, M. A. Uman, J. D. Hill, and D. M. Jordan
Determination of the Electric Field Intensity and Space Charge Density versus Height Prior to Triggered Lightning, J. Geophys. Res., Vol., 116, D15201, doi:10.1029/2011JD015710, 2011, C. J. Biagi, M. A. Uman, J. Gopalakrishnan, J. D. Hill, V. A. Rakov, T. Ngin, and D. M. Jordan
Measurements of Radiation Field Signatures of Rocket-Triggered Lightning, Journal of High Voltage Engineering, submitted March 1, 2011, S. Mallick, V. A. Rakov, A. Nag, C. Biagi, D. M. Jordan, and M. A. Uman
High-speed video observations of a lightning stepped leader, J. Geophys. Res., Vol. 116, D16117, doi:10.1029/2011JD015818, 2011, J. D. Hill, M. A. Uman, and D. M. Jordan
Measured close lightning leader-step electric-field-derivative waveforms, J. Geophys. Res., Vol. 116, doi:10.1029/2010JD015249, 2011, J. Howard, M. A. Uman, C. Biagi, D. Hill, V. A. Rakov, and D. M. Jordan
Evaluation of U. S. National Lightning Detection Network performance characteristics using rocket-triggered lightning data acquired in 2004-2009, J. Geophys. Res. Vol. 116, D02123, doi:10.1029/JD014929, 2011, A. Nag, S. Mallick, V. A. Rakov, J. Howard, C. J. Biagi, D. Hill, M. A. Uman, D. M. Jordan, K. J. Rambo, J. Jerauld, B. A. DeCarlo, K. L. Cummins and J. A. Cramer
High-speed X-ray Images of Triggered Lightning Dart Leaders, J. Geophys. Res., Vol. 116, D20208, doi:10.1029/2011JD015973, 2011, Dwyer, J. R., M. Schaal, H. K. Rassoul, M. A. Uman, D.M. Jordan, and D. Hill
2010
Observations of Stepping Mechanisms in a Rocket-and-Wire Triggered Lightning Flash, J. Geophys. Res. Vol. 115, D23215, doi:10.1029/2010JD014616, 2010, C. J. Biagi, M. A. Uman, J. D. Hill, D. M. Jordan, V. A. Rakov, and J. Dwyer
Attempts to Create Ball Lightning with Triggered Lightning, J. Atmospheric and Solar-Terrestrial Physics, ATP3151, doi:10.1016/j.jastp.2010.04.009, 2010, J. D. Hill, M. A. Uman, M. Stapleton, D. M. Jordan, A. Chebaro, C. J. Biagi
Three-dimensional Imaging of Upward Positive Leaders in Triggered Lightning using VHF Broadband Digital Interferometers, Geophysical Research Letters, Vol. 37, L05805, doi:10.1029/2009GL042065,2010, S. Yoshida, C.J. Biagi, V. A. Rakov, J. D. Hill, M. V. Stapleton, D. M. Jordan, M. A. Uman, T. Morimoto, T. Ushio, and Z.I. Kawasaki
RF and X-ray Source Locations during the Lightning Attachment Process, J. Geophys. Res., Vol. 115, D06204, doi:10.1029/2009JD012055, 2010, J. Howard, M. A. Uman, C. Biagi, D. Hill, J. Jerauld, V. A. Rakov, J. Dwyer, Z. Saleh, and H. Rassoul
Estimation of the Fluence of High-energy Electron Bursts Produced by Thunderclouds and the Resulting Radiation Doses Received in Aircraft,J. Geophys. Res., Vol. 115, D09206, doi:10.1029/2009JD012039,2010, J. R. Dwyer, D. M. Smith, M. A. Uman, Z. Saleh, B. Grefenstette, B. Hazelton and H. K. Rassoul
Return Stroke Peak Current versus Charge Transfer in Rocket-Triggered Lightning, J. Geophys. Res., Vol. 115, D12107. doi:10.1029/2009JD013066, 2010, J. Schoene, M. A. Uman, and V. A. Rakov
2009
High-speed Video Observations of Rocket-and-Wire Initiated Lightning, Geophys. Res. Let., Vol.36, L15801, doi:10.1029/2009GL038525, 2009, C. J. Biagi, D. M. Jordan, M. A. Uman, J. D. Hill, W. H. Beasley, and J. Howard
Lightning Currents Flowing in the Soil and Entering a Test Power Distribution Line via its Grounding, IEEE Transactions on Power Delivery, Vol. 24, 1095-1103, 2009 doi:10.1109/TPWRD.2009.2014031, J. Schoene, M.A. Uman, V.A. Rakov, J. Jerauld, K. J.Rambo, D. M. Jordan, G. H. Schnetzer, M. Paolone, C.A. Nucci, E. Petrache, and F. Rachidi
Remote Measurements of Thundercloud Electrostatic Fields, J. Geophys. Res. Vol. 114, D09208, doi:10.1029/2008JD0111386, 2009, J. R. Dwyer, M. A. Uman, and H. K. Rassoul
Measured Electric and Magnetic Fields from an Unusual Cloud-to-Ground Lightning Flash Containing Two Positive Strokes Followed by Four Negative Strokes, J. Geophys. Res.114, D19115, doi:10.1029/2008JDO11660, 2009, J. E. Jerauld, M. A. Uman, V. A. Rakov, K. J. Rambo, D. M. Jordan, G. H. Schnetzer
Lightning Electromagnetic Field Coupling to Overhead Lines: Theory, Numerical Simulations and Experimental Validation, IEEE Trans. on Electromagnetic Compatability, Vol. 51, No 3, doi:10.1109/TEMC2009.2025958, August 2009, M. Paolone, F. Rachidi, A. Borghette, C. A. Nucci, M. Rubinstein, V. A. Rakov, and M. A. Uman
Properties of the x-ray emission from rocket-triggered lightning as measured by the Thunderstorm Energetic Radiation Array (TERA), J. Geophys. Res. Vol. 114, D17210, doi:10.1029/2008JDO11618, 2009, Z. Saleh, J. Dwyer, J. Howard, M. Uman, M. Bakhtiari, D. Concha, M. Stapleton, D. Hill, C. Biagi and H. Rassoul
Characterization of Return Stroke Currents in Rocket-Triggered Lightning, J. Geophys. Res.Vol. 14, D03106, doi.10.1029/2008JD009873. 2009, J. Schoene, M. A. Uman, V. A. Rakov, K. J. Rambo, J. Jerauld, C. T. Mata, A. G. Mata, D. M. Jordan, G. H. Schnetzer
2008
Testing of Lightning Protective System of a Residential Structure: Comparison of Data Obtained in Rocket-Triggered Lightning and Current Surge Generator Experiments, High Voltage Engineering, Vol. 34, No. 12, December, 2008, G. Maslowski, V. A. Rakov, S. Wyderka, J. Bajorek, B. A. DeCarlo, J. Jerauld, G.H. Schnetzer, J. Schoene, M. A. Uman, K. J. Rambo, D. M. Jordan and W. Krata
A study of X-ray emission from laboratory sparks in air at atmospheric pressure, J. Geophys. Res. Vol. 113, D23207, doi:10.1029/2008JD010315, 2008, J.R. Dwyer, Z. Saleh, H.K. Rassoul, D. Concha, M.Rahman, V. Cooray, J. Jerauld, M.A. Uman, and V.A. Rakov
Characteristics of the Optical Pulses Associated with a Downward Branched Stepped Leader, J. Geophys. Res., Vol. 113, D21206, doi:10.1029/2008JD010231, 2008, W. Lu, D. Wang, N. Takagi, V. Rakov, M. Uman, and M. Miki
Co-location of Lightning Leader X-ray and Electric Field Change Sources, Geophys. Res. Lett., Vol. 35, L13817, doi:10.1029/2008GL034134, 2008, J. Howard, M. A. Uman, J. R. Dwyer, D. Hill, C. Biagi, Z. Saleh, J. Jerauld, H. K. Rassoul
Electric and Magnetic Fields and Field Derivatives from Lightning Stepped Leaders and First Return Strokes Measured at Distances from 100 to 1000 m, J. Geophys. Res., Vol. 113, doi:10.1029/2008JD010171, 2008, J. Jerauld, M. A. Uman, V. A. Rakov, K.J. Rambo, D.M. Jordan, and G.H. Schnetzer
Distribution of Currents in the Lightning Protective System of a Residential Building: 1. Triggered Lightning Experiments, IEEE Trans.on Power Delivery, Vol. 23, No. 4, Oct. 2008, doi:10.1109/TPWRD.2008.917894, B.A. DeCarlo,V.A. Rakov, J.E. Jerauld, G.H. Schnetzer, J. Schoene, M.A. Uman, K.J. Rambo, V. Kodali, D.M. Jordan, G. Maxwell, S. Humeniuk, and M. Morgan
Experimental Study of Lightning-Induced Currents in a Buried Loop Conductor and a Grounded Vertical Conductor, IEEE Trans. on Electromagnetic Compatibility, Vol. 50, No. 1, Feb. 2008, doi:10.1109/TEMC.2007.911927, J. Schoene, M.A. Uman, V.A. Rakov, J. Jerauld, B.D. Hanley, K.J. Rambo, J. Howard, and B.DeCarlo
American Geophysical Union (AGU) - Fellow, 1989, Fellow; 1989 - present
Institute of Electrical and Electronics Engineers (IEEE) - Fellow, 1988; Life Fellow, 2004, Fellow; 1988 - present
American Meteorological Society, Fellow; 1984 - present
International Commission on Atmospheric Electricity (ICAE), 1975-1992, Member; 1984 - 1992