Nikolai G. Lehtinen: Conference Presentations

1994:

Markov, G. A. and N. G. Lehtinen, Excitation of Ionospheric Alfven Resonator by Plasma-Wave Discharge, Oral presentation at Second International Scientific School-Seminar on Dynamic and Stochastic Wave Phenomena; Nizhniy Novgorod - Moscow - Nizhniy Novgorod, Russia; June 21-28, 1994.

1995:

Lehtinen, N. G., M. Walt, U.S. Inan, T. F. Bell and V. P. Pasko, X-Ray Emissions Produced by a Relativistic Beam of Runaway Electrons Accelerated by a Quasi-Electrostatic Thundercloud Fields, Poster presentation at AGU Fall Meeting; San Francisco, CA, USA; Abstract A32C-16; December 11-15, 1995.

1996:

Lehtinen, N. G., M. Walt, U.S. Inan, T. F. Bell and V. P. Pasko, Gamma-Ray Emission Produced by a Relativistic Beam of Runaway Electrons Accelerated by a Quasi-Electrostatic Thundercloud Fields, Poster presentation at 11th Summer NSF CEDAR Workshop; Boulder, CO, USA; June 16-22, 1996.

Lehtinen, N. G., T. F. Bell, V. P. Pasko, and U. S. Inan, A Two-Dimensional Model of Runaway Electron Beams Driven by Quasi-Electrostatic Thundercloud Fields, Poster presentation at AGU Fall Meeting; San Francisco, CA, USA; Abstract A11A-16; December 15-19, 1996.

1997:

Lehtinen, N. G., T. F. Bell, V. P. Pasko, and U. S. Inan, A two-dimensional model of runaway electron beams driven by quasi-electrostatic thundercloud fields. Poster presentation at 12th Summer NSF CEDAR Workshop; Boulder, CO, USA; June 8-13, 1997.

Lehtinen, N. G., A Two-Dimensional Model of Runaway Electron Beams Driven by Quasi-Electrostatic Thundercloud Fields, Oral presentation at IEEE AP-S International Symposium and URSI North American Radio Science Meeting; Montreal, Quebec, Canada; July 13-18, 1997; INVITED (part of student paper competition).

Lehtinen, N. G., A Two-Dimensional Model of Runaway Electron Beams Driven by Quasi-Electrostatic Thundercloud Fields, Poster presentation at IEEE AP-S International Symposium and URSI North American Radio Science Meeting; Montreal, Quebec, Canada; July 13-18, 1997; INVITED (part of student paper competition).

Lehtinen, N. G., A Two-Dimensional Model of Runaway Electron Beams Driven by Quasi-Electrostatic Thundercloud Fields, Oral presentation at IEEE AP-S International Symposium and URSI North American Radio Science Meeting; Montreal, Quebec, Canada; Abstract GH 113.7; July 13-18, 1997.

Lehtinen, N. G., T. F. Bell, and U. S. Inan, Monte Carlo Simulation of Runaway Electron Breakdown in the Presence of a Static Magnetic Field with Application to the Phenomena of Red Sprites and Terrestrial Gamma Ray Flashes, Poster presentation at AGU Fall Meeting; San Francisco, CA, USA; Abstract A22C-9; December 8-12, 1997.

1998:

Lehtinen, N. G., T. F. Bell, U. S. Inan and V. P. Pasko, Monte Carlo Simulation of Runaway Electron Breakdown in the Presence of a Static Magnetic Field with Application to the Phenomenon of Red Sprites, Oral presentation at National Radio Science Meeting; Boulder, CO, USA; Abstract G/H-3.8; January 5-9, 1998.

Lehtinen, N. G., T. F. Bell and U. S. Inan, Monte Carlo Model of Runaway Electrons in the Upper Atmosphere, Poster presentation at RF Ionospheric Interactions Workshop; Santa Fe, NM, USA; April 19-20, 1998.

Lehtinen, N. G., T. F. Bell and U. S. Inan, Monte Carlo Model of Runaway Electrons in the Mesosphere, Poster presentation at 13th Summer NSF CEDAR Workshop; Boulder, CO, USA; June 7-12, 1998.

Lehtinen, N. G., U. S. Inan and T. F. Bell, Effects of Upward Driven Runaway Electrons in the Conjugate Hemisphere: Conjugate Sprites? Poster presentation at AGU Fall Meeting; San Francisco, CA, USA; Abstract A31A-25; December 6-10, 1998.

1999:

Lehtinen, N. G, Monte Carlo Simulation of Runaway MeV Electron Breakdown in the Presence of a Static Magnetic Field with Application to the Phenomenon of Red Sprites and Terrestrial Gamma Ray Flashes, Oral presentation at National Radio Science Meeting; Boulder, CO, USA; January 4-8, 1999; INVITED (part of student paper competition).

Lehtinen, N. G., U. S. Inan and T. F. Bell, Nonuniform runaway in the presence of a magnetic field, Oral presentation at National Radio Science Meeting; Boulder, CO, USA; Abstract G/H3.8; January 4-8, 1999.

Lehtinen, N. G., U. S. Inan, and T. F. Bell, Effects of thunderstorm-related energetic runaway electrons in the conjugate hemisphere, Poster presentation at 14th Summer NSF CEDAR Workshop; Boulder, CO, USA; June 13-18, 1999.

Lehtinen, N. G., U. S. Inan and T. F. Bell, Energetic Runaway Electrons in the Atmposphere, Oral presentation at XXVIth General Assembly of the International Union of Radio Science; Toronto, Canada; Abstract GH2.7; August 13-21, 1999.

Lehtinen, N. G., U. S. Inan and T. F. Bell, Nonuniform Runaway Electron Avalanche above Thunderstorms and Effects in the Conjugate Hemisphere, Poster presentation at AGU Fall Meeting; San Francisco, CA, USA; Abstract A51B-07; December 13-17, 1999.

2002:

Lehtinen, N. G., P. W. Gorham, A. R. Jacobson, and R. A. Roussel-Dupre, The FORTE VLF instrument as a high-energy cosmic ray detector, Oral presentation at SPIE Meeting; Waikoloa, HI, USA; 22-23 August 2002.

2004:

Lehtinen, N. and P. Gorham, Cosmic ray detection with radio signals, Oral presentation at AUGER Mini-Symposium; Argonne National Laboratory, IL, USA; January 14, 2004.

2005:

Lehtinen, N. G., Monte Carlo modelling of relativistic runaway electrons and terrestrial gamma-ray flashes, Oral presentation at Seminar on Terrestrial Gamma Ray Flashes and Lightning Associated Phenomena; Berkeley, CA, USA; 15 February 15, 2005.

Lehtinen, N. G., Theoretical study of ionospheric modification and ELF/VLF wave generation by HAARP, Poster presentation at XXVIIIth General Assembly of International Union of Radio Science (URSI); New Dehli, India; Abstract  HG2P.2(0879); October 23-29, 2005 (part of Young Scientist competition).

Lehtinen, N. G. and U. S. Inan, Conditions for production of terrestrial gamma-ray flashes, Oral presentation at AGU Fall Meeting; San Francisco, CA, USA; Abstract AE13A-05; 5-9 December 2005.

2006:

Lehtinen, N. G. and U. S. Inan, Ionospheric modification and ELF/VLF wave generation by HAARP, Oral presentation at National Radio Science Meeting; Boulder, CO; January 4-7, 2006.

Lehtinen, N. G. and U. S. Inan, Non-Maxwellian model of ionospheric heating by HF radiation, Poster presentation at AGU Fall Meeting; San Francisco; Abstract SA53B-1379; 11-15 December, 2006.

B. Carlson, N. Lehtinen and U. Inan Constraints on Terrestrial Gamma-ray Flash Production Derived From Satellite Observations, Poster presentation at AGU Fall Meeting; San Francisco; Abstract AE31A-1039; 11-15 December, 2006.

2007:

Lehtinen, N. G. and U. S. Inan, Comparison of non-Maxwellian and Maxwellian models of ionospheric heating by HF radiation, Poster presentation at RF Ionospheric Interactions Workshop; Santa Fe, NM; 22 - 25 April 2007.

Carlson, B.E., N. G. Lehtinen, U. S. Inan, Conditions and constraints on production of Terrestrial Gamma-ray Flashes (TGF), Oral presentation at CEDAR/DASI Workshop; Santa Fe, NM; 24-29 June 2007; INVITED.

Carlson, B., N. Lehtinen and U. Inan, Runaway Relativistic Electron Avalanche Seeding Efficiency, Oral presentation at IUGG General Assembly; Perugia, Italy; 2-13 July, 2007.

Lehtinen, N. G., B. E. Carlson, U. S. Inan and T. F. Bell, Theoretical studies of terrestrial gamma flashes and relativistic runaway electrons, Oral presentation at URSI North American Radio Science Meeting; Ottawa, Ontario, Canada; Abstract URSI297; 22-26 July 2007; INVITED.

Lehtinen, N. G. and U. S. Inan, Emission of ELF/VLF Waves by a Modulated Electrojet upwards into the Ionosphere and into the Earth-Ionosphere Waveguide, Poster presentation at AGU Fall Meeting; San Francisco, CA; Abstract SA11A-0297; 10-14 December 2007.

Cohen, M. B., U. S. Inan, M. GoĊ‚kowski and N. G. Lehtinen, Geometric modulation: A new method of ELF/VLF wave generation with continuous HF heating of the auroral electrojet, Poster presentation at AGU Fall Meeting; San Francisco, CA; Abstract SA11A-0292; 10-14 December 2007.

Cotts, B. R., U. S. Inan and N. G. Lehtinen, Daytime Early VLF Perturbations Exhibiting Long Recoveries and Wide-angle Scattering, Poster presentation at AGU Fall Meeting; San Francisco, CA; Abstract AE23A-0907; 10-14 December 2007.

2008:

Lehtinen, N. G. and U. S. Inan, Possible Persistent Ionization Caused by Giant Blue Jets, Oral presentation at National Radio Science Meeting; Boulder, CO; Abstract GH5-9; January 3-6, 2008; INVITED.

Carlson, B. E., N. G. Lehtinen and U. S. Inan, Energetic Electrons Accompanying Terrestrial Gamma-Ray Flashes, Oral presentation at National Radio Science Meeting; Boulder, CO; Abstract GH7-5; January 3-6, 2008.

Lehtinen, N. G., Stanford full-wave modeling, Oral presentation at Remediation of Enhanced Radiation Belts Workshop; Lake Arrowhead, CA; 3-6 March 2008; INVITED.

Lehtinen, N. G., Theoretical Modeling of HF Heating and ELF Generation, Oral presentation at Remediation of Enhanced Radiation Belts Workshop; Lake Arrowhead, CA; 3-6 March 2008; INVITED.

Lehtinen, N. G. and U. S. Inan, ELF/VLF Emissions from HAARP, Poster presentation at RF Ionospheric Interactions Workshop; Boulder, CO; 22-25 April 2008.

Carlson, B, N. G. Lehtinen and U. S. Inan, Energetic Electrons Accompanying Terrestrial Gamma-Ray Flashes, Oral presentation at CEDAR Workshop; Midway, UT; 16-21 June 2008; INVITED.

Lehtinen, N. G. and U. S. Inan, Generation of ELF/VLF waves by an ionospheric heater at the geomagnetic equator, Poster presentation at XXIX General Assembly of the International Union of Radio Science (URSI); Chicago, IL; Abstract GP1-GHE.16; 7-16 August, 2008.

Piddyachiy, D., U. S. Inan, T. F. Bell, M. Parrot, N. G. Lehtinen, DEMETER observations of a column of intense up-going ELF/VLF radiation excited by the HAARP HF heater, Oral presentation at XXIX General Assembly of the International Union of Radio Science (URSI); Chicago, IL; Abstract HP-HG1.8; 7-16 August, 2008.

Carlson, B. E., N. G. Lehtinen and U. S. Inan, Observations and Implications of Terrestrial Gamma-Ray Flash Electrons, Oral presentation at Workshop on Coupling of Thunderstorms and Lightning Discharges to Near-Earth Space; Corte, France, June 23-27, 2008.

Lehtinen, N. G. and U. S. Inan, ELF/VLF Wave Radiation by an Equatorial Ionospheric Heater, Poster presentation at AGU Fall Meeting; San Francisco, CA; Abstract SA43B-1594; 15-19 December 2008.

Carlson, B., N. Lehtinen and U. Inan, Terrestrial gamma-ray flash electron observation with SAMPEX, Poster presentation at AGU Fall Meeting; San Francisco, CA; Abstract AE11A-0286; 15-19 December 2008.

Bell, T. F., U. S. Inan, N. Lehtinen, K. Graf and M. Parrot, Carlson, B., N. Lehtinen and U. Inan, DEMETER observations of plasma density irregularities induced above powerful VLF transmitters and their connection with energetic proton precipitation from the radiation belts, Poster presentation at AGU Fall Meeting; San Francisco, CA; Abstract SA43B-1583; 15-19 December 2008.

Cohen, M. B., U. S. Inan, N. G. Lehtinen and M. A. Golkowski, Optimizing ELF/VLF generation via HF heating utilizing beam motion, Poster presentation at AGU Fall Meeting; San Francisco, CA; Abstract SA42A-08; 15-19 December 2008.

2009:

Lehtinen, N. G. and U. S. Inan, ELF/VLF Wave Radiation Produced by an Equatorial Ionospheric Heater, Oral presentation at National Radio Science Meeting; Boulder, CO; Abstract HG2-9; January 5-8, 2009.

Cohen, M. B., U. S. Inan, M. Golkowski, N. G. Lehtinen and D. Piddyachiy, ELF/VLF Generation Experiments at the HAARP Facility, Oral presentation at National Radio Science Meeting; Boulder, CO; Abstract HG2-1; January 5-8, 2009.

Carlson, B. E., N. G. Lehtinen and U. S. Inan, Terrestrial Gamma-Ray Flash Electron Observations by the SAMPEX Satellite and their Implications, Oral presentation at National Radio Science Meeting; Boulder, CO; Abstract GH3b-2; January 5-8, 2009.

Lehtinen, N. G., Theoretical modeling of full wave propagation and rapid ionospheric chemistry, Oral presentation at ONR Lightning-ionosphere Workshop; Stanford University, Stanford, CA; February 12-13, 2009; INVITED.

Lehtinen, N. G., Theoretical Modeling of HF Heating and ELF/VLF Generation, Oral presentation at MURI, Radiation Belt Remediation, HAARP, and DSX Workshop; Stanford University, Stanford, CA; February 18-19, 2009; INVITED.