Presentations

2008

  • Brant Carlson
    Carlson, B. E., N. G. Lehtinen, and U. S. Inan (2008), Energetic electrons accompanying terrestrial gamma-ray flashes, National Radio Science Meeting, Boulder, CO, January 2008
  • Daniel Golden
    Golden, D. I., M. Spasojevic, U. S. Inan and D. L. Carpenter (2008) VLF Chorus and Hiss Characteristics as Observed at L=2.4; Poster presentation at URSI General Assembly; Chicago, IL; 7-16 August, 2008.
  • Nikolai Lehtinen
    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.
  • Nikolai Lehtinen
    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; Eos Trans. AGU, 89(53), Fall Meet. Suppl., Abstract SA43B-1594; 15-19 December 2008.
  • Nikolai Lehtinen
    Lehtinen, N. G. and U. S. Inan, Possible Persistent Ionization Caused by Giant Blue Jets, Oral presentation at National Radio Science Meeting; Boulder, CO; January 3-6, 2008; INVITED..
  • Denys Piddyachiy
    Piddyachiy, D., U. S. Inan, T. F. Bell, M. Parrot, N. G. Lehtinen (2008), DEMETER Observations of a Column of Intense Up-going ELF/VLF Radiation Excited by the HAARP HF Heater, Oral presentation to URSI commission chairs at 2008 URSI General Assembly, Chicago, IL; 7-16 August; INVITED.
  • Nikolai Lehtinen
    Lehtinen, N. G., Stanford full-wave modeling, Oral presentation at Remediation of Enhanced Radiation Belts Workshop; Lake Arrowhead, CA; 3-6 March 2008; INVITED.
  • Brant Carlson
    Carlson, B. E., N. G. Lehtinen, and U. S. Inan (2008), Observations and implications of terrestrial gamma-ray flash electrons, AGU 2008 Fall Meeting, poster AE11A-0268, San Francisco, CA, December 15-19.
  • Brant Carlson
    Piddyachiy, D., U. S. Inan, T. F. Bell, M. Parrot, N. G. Lehtinen (2008), DEMETER Observations of a column of intense up-going ELF/VLF radiation excited by the HAARP HF heater, Poster presentation at 2008 URSI General Assembly, Chicago, IL; Abstract HP-HG1.8; 7-16 August.
  • Nikolai Lehtinen
    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.
  • Nikolai Lehtinen
    Cohen, M. B., U. S. Inan, N. G. Lehtinen, and M. Golkowski (2008) Optimizing ELF/VLF generation via HF heating utilizing beam motion; Oral presentation at 2008 Fall AGU Meeting; San Francisco, CA; 15-19 December, 2008.
  • Nikolai Lehtinen
    Cohen, M. B., and U. S. Inan (2008) Geometric Modulation: A New, More Effective Method of Steerable ELF/VLF Wave Generation with Continuous HF Heating of the Lower Ionosphere; Poster presentation at URSI General Assembly; Chicago, IL; Abstract GP1-GHE14; 7-16 August, 2008.
  • Denys Piddyachiy
    Piddyachiy, D., (2008) DEMETER Observations of HAARP generated ELF/VLF and HF waves, Oral presentation at Remediation of Enhanced Radiation Belts Workshop; Lake Arrowhead, CA; 3-6 March, 2008; INVITED.
  • Denys Piddyachiy
    Piddyachiy, D., U. S. Inan, T. F. Bell, M. Parrot (2008), Characterization of the Ionosphere Above the HAARP HF Heater Using DEMETER Satellite Data, American Geophysical Union, Fall Meeting 2008; San Francisco, CA; Abstract SA43B-1597; 15-19 December, 2008.
  • Denys Piddyachiy
    Cohen, M. B., and U. S. Inan (2008) Geometric Modulation: A New, More Effective Method of Steerable ELF/VLF Wave Generation with Continuous HF Heating of the Lower Ionosphere; Oral presentation at URSI General Assembly International Student Paper Competition session; Chicago, IL; 7-16 August, 2008; INVITED.
  • Denys Piddyachiy
    Cohen, M. B., (2008) New methods of ELF/VLF wave generation, Oral presentation at Remediation of Enhanced Radiation Belts Workshop; Lake Arrowhead, CA; 3-6 March, 2008; INVITED.
  • Marek Golkowski
    Golkowski, M.., U. S. Inan, M. B. Cohen, D. Piddyachiy, A. Streltsov (2008), Wave injection with the HAARP HF heater: conditions and coherence limits for magnetospheric amplification, Poster presentation at 2007 AGU Fall Meeting; San Francisco, CA; Abstract SA438-1591; 15-19 December, 2008.
  • Nikolai Lehtinen
    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.
  • Marek Golkowski
    Golkowski, M.., (2008) Wave Injection at Low Latitudes, Oral presentation at Remediation of Enhanced Radiation Belts Workshop; Lake Arrowhead, CA; 3-6 March, 2008; INVITED
  • Daniel Golden
    Golden, D. I., M. Spasojevic and U. S. Inan (2008) VLF Chorus and Hiss Characteristics Observed at L=2.4; Oral presentation at 3rd VERSIM Workshop, Tihany, Hungary, 15-20 September, 2008.
  • Daniel Golden
    Carlson, B. E., N. G. Lehtinen, and U. S. Inan (2008), Observations and implications of terrestrial gamma-ray flash electrons, Workshop on Coupling of Thunderstorms and Lightning Discharges to Near-Earth Space, Corte, Corsica, France, June 23-27.
  • Marek Golkowski
    Golkowski, M.., (2008) HAARP One-hop Two-hop Observations, Oral presentation at Remediation of Enhanced Radiation Belts Workshop; Lake Arrowhead, CA; 3-6 March, 2008; INVITED.
  • Erin Gemelos
    Gemelos, Erin S., U.S. Inan, M. Walt, J-A. Sauvaud, and M. Parrot, (2008) Seasonal differences in electron precipitation driven by lightning, Oral presentation at 3rd VERSIM Workshop, Tihany, Hungary, Sept. 15-20, 2008. 
  • Marek Golkowski
    Golkowski, M.., (2008) ELF/VLF wave injection experiments with HAARP, Oral presentation at RF Ionospheric Workshop; Boulder, CO; 22-25 April, 2008; INVITED.
  • Marek Golkowski
    Golkowski, M., U. S. Inan, M.B. Cohen (2008), Magentospheric propagation paths of whistler-mode signals excited by the HAARP HF heater; Oral presentation at 2008 URSI US National Radio Science Meeting; Boulder, CO; Abstract HGS4-11; 3-6 January, 2008.

2007

  • Benjamin Cotts
    Cotts, B. R. T., U. S. Inan, Observation of daytime perturbations of VLF transmitter signals ICAE, Oral Presentation, Beijing, China, Aug. 13-17, 2007.
  • Robert Marshall
    Marshall, R. A., U. S. Inan, and W. A. Lyons, Observations of Burst-like VLF activity in association with sprites and correlations with intracloud lightning activity, XXIV General Assembly of the International Union of Geophysics and Geodesy, Perugia, Italy, July 2-13, 2007, oral presentation JAS006-7.
  • Benjamin Cotts
    Cotts, B. R. T., U. S. Inan, and N. G. Lehtinen, Long Recovery Early/fast Events as Possible Evidence of Persistent Ionization by Giant Blue Jets URSI, Oral Presentation, Ottawa, Canada, July 22-26, 2007.
  • Erin Gemelos
    Selser, E. M., U. S. Inan (2007), On the Association of Energetic Electron Enhancements in the Drift Loss Cone with Lightning, GEM 2007 Summer Workshop, Zermatt Resort, UT, June 17-22.
  • Nikolai Lehtinen
    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.
  • Nikolai Lehtinen
    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.
  • Brant Carlson
    Carlson, B. E., N. G. Lehtinen, and U. S. Inan (2007), Runaway relativistic electron avalanche seeding efficiency, IUGG General Assembly, Perugia, Italy, July 2-13.
  • Umran Inan
    Inan U., D. Piddyachiy, W. Peter, M. Parrot, J.-A. Sauvaud (2007), Lightning-Induced Electron Precipitation: DEMETER and Ground-based Observations, EGU General Assembly, Vienna, Austria, 15 - 20 April 2007.
  • Umran Inan
    Inan U., W. Peter, D. Piddyachiy, M. Parrot, J.-A. Sauvaud (2007), Ground- and Satellite-based Measurements of Lightning-induced Electron Precipitation, IUGG XXIV GENERAL ASSEMBLY, Perugia, Italy, 2 - 13 July.
  • Denys Piddyachiy
    Piddyachiy D., U. S. Inan, M. Parrot (2007), Observations of ELF/VLF signals generated by full power HAARP array aboard DEMETER satellite, RF Ionospheric Interactions Workshop, Santa Fe, NM, USA, 22 - 25 April.
  • Nikolai Lehtinen
    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.
  • Nikolai Lehtinen
    Cohen, M. B., U. S. Inan, R. K. Said, D. M. Smith (2007), Terrestrial Gamma-ray Flashes and Very Low Frequency Data; Oral presentation at 2007 IUGG General Assembly; Perugia, Italy; Abstract JAS006-237; 2-13 July, 2007.
  • Robert Marshall
    Marshall, R. A., R. T. Newsome, and U. S. Inan, First results from the PIPER imaging photometer instrument at HAARP, RF Ionospheric Interactions Workshop, Santa Fe, NM, April 2007, poster presentation.
  • Benjamin Cotts
    Cotts, B. R. T., U. S. Inan, Daytime Early VLF Perturbations Exhibiting Long Recoveries and Wide-angle Scattering AGU, Poster, San Francisco, CA, Dec. 10-14, 2007.
  • Benjamin Cotts
    Cohen, M. B., U. S. Inan, M. A. Golkowski (2007), Spatial and temporal analysis of HAARP-radiated ELF/VLF signals across Alaska and the Pacific Rim; Oral presentation at 2007 URSI North American Radio Science Meeting; Ottawa, Canada; Abstract URSI291; 22-26 July, 2007.
  • Denys Piddyachiy
    D. Piddyachiy, U. Inan, T. Bell, M. Parrot (2007), Observations of ELF Signals Over HAARP HF Ionospheric Heater and its Conjugate Region Aboard DEMETER Satellite, Eos Trans. AGU, 88(52), Fall Meet. Suppl., Abstract SM51A-0278.
  • Marek Golkowski
    Golkowski, M., U. S. Inan, M. B. Cohen (2007), ELF/VLF Magnetopheric Wave Injection Results from the Upgraded Ionospheric Heater; Oral presentation at 2007 URSI North American Radio Science Meeting; Ottawa, Canada; Abstract URSI289; 22-26 July, 2007.
  • Marek Golkowski
    Golkowski, M.., U. S. Inan, D. Piddyachiy, M. B. Cohen,  (2007), Magnetospheric Wave-Particle Interactions Excited by the HAARP HF Heater, Poster presentation at 2007 AGU Fall Meeting; San Francisco, CA; Abstract SM51A-0278; 10-14 December, 2007.
  • Marek Golkowski
    U. S. Inan, Cotts, B. R. T., and N. G. Lehtinen, Long Recovery Early/Fast Events as Possible Evidence of Persistent Ionization by Giant Blue Jets IUGG, Oral Presentation (given by U. S. Inan), Perugia, Italy, July 2-13, 2007.
  • Marek Golkowski
    Cohen, M. B., U. S. Inan, M. Golkowski, N. G. Lehtinen (2007), Geometric Modulation: A new method of ELF/VLF wave generation with continuous HF heating of the auroral electrojet, Poster presentation at 2007 AGU Fall Meeting; San Francisco, CA; Abstract SA11A-0292; 10-14 December, 2007.
  • Marek Golkowski
    Golkowski, M.., U. S. Inan, (2007), Multi-Station Observations of Whistler-Mode Chorus; Oral presentation at 2007 IUGG General Assembly; Perugia, Italy; Abstract ASIII026; 2-13 July, 2007.
  • Robert Marshall
    Marshall, R. A., Observations and statistics of small-scale streamer and bead features in sprites, Streamers, sprites, leaders, lightning: from micro- to macroscales, Leiden, The Netherlands, Oct 8-12, 2007, oral presentation.
  • Robert Marshall
    Marshall, R. A. and U. S. Inan, The Association of Very-Low-Frequency Sferic Bursts with Sprites and Intra-cloud Lightning Activity, URSI National Radio Science Meeting, Ottawa, ON, Canada, July 23-26, 2007, oral presentation; FIRST PLACE, STUDENT PAPER COMPETITION.

2006

  • Nikolai Lehtinen
    Lehtinen, N. G., U. S. Inan (2006), Non-Maxwellian model of ionospheric heating by HF radiation, AGU 2006 Fall Meeting, poster SA53B-1379, San Francisco, CA, December 11-15.
  • Erin Gemelos
    Selser, E. M., U. S. Inan, and J. B. Blake (2006), Energetic Electron Enhancements in the Drift Loss Cone Caused By Lightning-Induced Precipitation, Global Aspects of Magnetosphere-Ionosphere Coupling Workshop, Yosemite, CA, February 7-10.