13:20  HEG1-1  TERRESTRIAL GAMMA-RAY FLASH (TGF) OBSERVATIONS WITH FERMI GBM

Michael S. Briggs*¹, Oliver J. Roberts², Matthew Stanbro¹, Eric S. Cramer¹, Robert H. Holzworth³, J E. Grove⁴, A Chekhtman⁵, Shelia McBreen⁶

¹CSPAR, University of Alabama in Hunstville, Huntsville
²USRA, USRA, Huntsville
³Earth and Space Sciences, University of Washington, Seattle
⁴Space Science Division, NRL, Washington, DC
⁵College of Science, George Mason University, Fairfax
⁶School of Physics, University College Dublin, Dublin, IRELAND

13:40  HEG1-2  MODELING OF X-RAY IMAGES AND ENERGY SPECTRA PRODUCED BY STEPPING LIGHTNING LEADERS

Wei Xu*¹, Robert A. Marshall¹, Sebastien Celestin², Victor P. Pasko³

¹Department of Aerospace Engineering Sciences, University of Colorado Boulder, Boulder, CO
²Laboratory of Physics and Chemistry of the Environment and Space (LPC2E), University of Orleans, Orleans, FRANCE
³Communications and Space Sciences Laboratory, The Pennsylvania State University, University Park, PA

14:00  HEG1-3  FIELD ENHANCEMENT AND RADIO EMISSIONS FROM HEAD-ON COLLISION OF STREAMERS

Feng Shi*, Ningyu Liu, Joseph R. Dwyer

Department of Physics and Space Science Center (EOS), University of New Hampshire, Durham

14:20  HEG1-4  VHF INTERFEROMETRIC IMAGING OF THE INITIATION AND PROPAGATION OF IN-CLOUD LIGHTNING LEADERS

Steven Cummer*¹, Fanchao Lyu¹, Zilong Qin², Mingli Chen²

¹Electrical and Computer Engineering, Duke University, Durham, NC
²Department of Building Service Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, CHINA

14:40  HEG1-5  SECONDARY EFFECTS OF LIGHTNING-INDUCED ELECTRON PRECIPITATION: CHEMICAL EFFECTS, OPTICAL EMISSIONS, AND X-RAYS

Robert A. Marshall*¹, Wei Xu¹, Austin Sousa², Antti Kero³

¹Smead Aerospace Engineering Sciences, University of Colorado Boulder, Boulder, CO
²Aeronautics and Astronautics, Stanford University, Stanford, CA
³Sodankyla Geophysical Observatory, University of Oulu, Oulu, FINLAND

15:20  HEG1-6  LWPC MODELING OF VLF PERTURBATIONS FROM LIGHTNING INDUCED ENERGETIC ELECTRON PRECIPITATION ON OVERLAPPING PATHS OF PROPAGATION

Chad M. Renick*¹, Mark Golkowski¹, Sandeep Sarker¹, Morris Cohen²

¹Electrical Engineering, University of Colorado Denver, Denver
²Electrical and Computer Engineering, Georgia Tech, Atlanta

15:40  HEG1-7  PROPAGATION ANALYSIS OF DAYTIME TWEEK ATMOSPHERICS ORIGINATING FROM EUROPEAN NORTH ATLANTIC WINTER THUNDERSTORMS

Ondrej Santolik*^1,2, Ivana Kolmasova^1,2

¹Institute of Atmospheric Physics CAS, Prague, CZECH REPUBLIC
²Faculty of Mathematics and Physics, Charles University, Prague, CZECH REPUBLIC

16:00  HEG1-8  REAL-TIME ESTIMATION OF IONOSPHERIC PARAMETERS FROM VLF ATMOSPHERICS USING MACHINE-LEARNED MODELS

Andre Lucas Antunes de Sa*, Robert A. Marshall

Aerospace Engineering Sciences, University of Colorado Boulder, Boulder, CO

16:20  HEG1-9  IONOSPHERIC D-REGION REMOTE SENSING USING ELF SFERICS

Mark Golkowski*¹, Sandeep Sarker¹, Chad Renick¹, Robert C. Moore², Morris B. Cohen³

¹Department of Electrical Engineering, University of Colorado Denver, Denver, CO
²Department of Electrical and Computer Engineering, University of Florida, Gainesville, FL
³School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA