R. C. Moore, S. Fujimaru, D. A. Kotovsky, Mark Gołkowski,
... are observed for the first time at the High-Frequency Active Auroral Research Program high-frequency transmitter in Gakona, Alaska. The observed ELF and ...
Tópico(s): Earthquake Detection and Analysis
2013 - American Physical Society | Physical Review Letters
Bengt Eliasson, G. M. Milikh, T. C. Liu, Xi Shao, K. Papadopoulos,
... were discovered during HF heating experiments at the High‐Frequency Active Auroral Research Program where they descended up to 70 km from ... power 4–5 times lower than that at High‐Frequency Active Auroral Research Program, and since the experiment at Arecibo also has ...
Tópico(s): Astro and Planetary Science
2018 - Wiley | Journal of Geophysical Research Space Physics
E. A. Kendall, R. A. Marshall, Richard Parris, Asti Bhatt, A. J. Coster, T. R. Pedersen, P. A. Bernhardt, C. A. Selcher,
... scale rayed artificial airglow was observed at the High frequency Active Auroral Research Program (HAARP) heating facility by the HAARP telescopic imager. ...
Tópico(s): Astro and Planetary Science
2010 - American Geophysical Union | Journal of Geophysical Research Atmospheres
M. J. Kosch, T. R. Pedersen, Е. В. Мишин, M. Starks, E. Gerken‐Kendall, D. D. Sentman, Shin‐ichiro Oyama, B. J. Watkins,
On 4 February 2005 the High‐Frequency Active Auroral Research Program (HAARP) facility was operated at 2.85 MHz to produce artificial optical emissions in the ionosphere while passing through the second ...
Tópico(s): Astro and Planetary Science
2007 - American Geophysical Union | Journal of Geophysical Research Atmospheres
T. R. Pedersen, H. C. Carlson,
... at 630.0 nm were detected at the High Frequency Active Auroral Research Program (HAARP) ionospheric research facility near Gakona, Alaska (62. ...
Tópico(s): Geomagnetism and Paleomagnetism Studies
2001 - Wiley | Radio Science
E. N. Sergeev, Alexey Shindin, С. М. Грач, G. M. Milikh, Е. В. Мишин, P. A. Bernhardt, C. L. Siefring, S. J. Briczinski, M. McCarrick,
... plasma perturbations during HF heating experiments at the High Frequency Active Auroral Research Program facility in March–April 2011 and May–June ...
Tópico(s): Geomagnetism and Paleomagnetism Studies
2016 - Wiley | Radio Science
... HF) heating experiments conducted at Arecibo, EISCAT, and high frequency active auroral research program are discussed. These phenomena appearing in the F region of the ionosphere include high-frequency heater enhanced plasma lines, airglow enhancement, energetic electron ...
Tópico(s): Earthquake Detection and Analysis
2015 - American Institute of Physics | Physics of Plasmas
Nataliya V. Bakhmetieva, С. М. Грач, E. N. Sergeev, Alexey Shindin, G. M. Milikh, C. L. Siefring, P. A. Bernhardt, M. McCarrick,
... periodic irregularities (APIs) in the ionosphere using the High Frequency Active Auroral Research Program (HAARP) heating facility carried out in late May and early June 2014.The objective of this work is to detect API using high‐latitude facility and analyze possible differences of the ...
Tópico(s): Geomagnetism and Paleomagnetism Studies
2016 - Wiley | Radio Science
C. T. Fallen, J. A. Secan, B. J. Watkins,
... 25 February 2008 during an overpass of the High frequency Active Auroral Research Program (HAARP) research station in Alaska where ionosphere modification experiments were being conducted. An upward ion velocity enhancement of 200 m/ ...
Tópico(s): Earthquake Detection and Analysis
2011 - American Geophysical Union | Geophysical Research Letters
L.A. Rooker, M C Lee, Rezy Pradipta, B. J. Watkins,
... difference frequency in the VLF range using the High-frequency Active Auroral Research Program (HAARP) heating facility. A sequence of beat wave-generated whistler waves at 2, 6.5, 7.5, 8.5, 9.5, 11.5, 15.5, 22.5, 28.5 and 40.5 kHz were detected in our 2011 experiments. We present Modular Ultra-high-frequency Ionospheric Radar (MUIR) (446 MHz) measurements of ion ...
Tópico(s): GNSS positioning and interference
2013 - IOP Publishing | Physica Scripta
A. Najmi, G. M. Milikh, J. A. Secan, K. Chiang, Mark L. Psiaki, P. A. Bernhardt, S. J. Briczinski, C. L. Siefring, Chein‐Chi Chang, K. Papadopoulos,
... We present here new experimental results using the High Frequency Active Auroral Research Program ionospheric heater at a frequency close to the fourth electron gyroharmonic with simultaneous GPS, Stimulated Electromagnetic Emission, ionosonde, and occasional Incoherent Radar Scattering diagnostics. Differential phase measurements of GPS signals through the heated region indicated the presence of SSS with extremely high amplitude ( δn / n = 0.2–0.3) at ...
Tópico(s): Solar and Space Plasma Dynamics
2014 - Wiley | Journal of Geophysical Research Space Physics
T. B. Leyser, Lars Norin, M. McCarrick, T. R. Pedersen, B. Gustavsson,
... wave carrying orbital angular momentum (OAM), using the High Frequency Active Auroral Research Program (HAARP) facility in Alaska. Optical emissions from the ...
Tópico(s): Optical Wireless Communication Technologies
2009 - American Physical Society | Physical Review Letters
Mark Gołkowski, U. S. Inan, M. B. Cohen,
The HF facility of the High Frequency Active Auroral Research Program (HAARP) is employed to generate ELF/VLF radiation by modulation of overhead auroral electrojet currents for magnetospheric wave injection and propagation ...
Tópico(s): Solar and Space Plasma Dynamics
2009 - American Geophysical Union | Geophysical Research Letters
G. Jin, M. Spasojević, U. S. Inan,
The High Frequency Active Auroral Research Program (HAARP) facility is used to generate waves in the extremely low frequency (ELF) range via modulated HF ...
Tópico(s): Geomagnetism and Paleomagnetism Studies
2009 - American Geophysical Union | Journal of Geophysical Research Atmospheres
Lars Norin, T. B. Leyser, E. Nordblad, B. Thidé, M. McCarrick,
... interaction experiments. The experiments were performed at the High-Frequency Active Auroral Research Program (HAARP), Alaska, USA.
Tópico(s): Seismic Waves and Analysis
2009 - American Physical Society | Physical Review Letters
M. B. Cohen, Mark Gołkowski, U. S. Inan,
The HF heating facility of the High Frequency Active Auroral Research Program (HAARP), located near Gakona, Alaska, generates ELF (300 Hz ‐ 3 kHz) waves via modulated HF (2.7–10 MHz) heating of the ...
Tópico(s): Geomagnetism and Paleomagnetism Studies
2008 - American Geophysical Union | Geophysical Research Letters
Mark Gołkowski, U. S. Inan, A. R. Gibby, M. B. Cohen,
The HF dipole array of the High Frequency Active Auroral Research Program (HAARP) in Gakona, Alaska, was recently upgraded to 180 elements, facilitating operations at a total radiated power level of 3.6 MW ...
Tópico(s): Geomagnetism and Paleomagnetism Studies
2008 - American Geophysical Union | Journal of Geophysical Research Atmospheres
T. R. Pedersen, R. Esposito, M. Starks, M. McCarrick,
A beam‐swinging experiment carried out at the High Frequency Active Auroral Research Program under relatively stable ionospheric conditions has allowed the ...
Tópico(s): Solar and Space Plasma Dynamics
2008 - American Geophysical Union | Journal of Geophysical Research Atmospheres
D. Piddyachiy, U. S. Inan, T. F. Bell, N. G. Lehtinen, M. Parrot,
... of ELF signals generated by the recently upgraded High‐Frequency Active Auroral Research Program (HAARP) HF facility (3.6 MW) reveal three ...
Tópico(s): Geomagnetism and Paleomagnetism Studies
2008 - American Geophysical Union | Journal of Geophysical Research Atmospheres
T. R. Pedersen, R. Esposito, E. A. Kendall, D. D. Sentman, M. J. Kosch, Е. В. Мишин, R. A. Marshall,
... optical observations have been carried out at the High Frequency Active Auroral Research Program (HAARP) ionospheric heating facility since it began operations ...
Tópico(s): Astro and Planetary Science
2008 - Copernicus Publications | Annales Geophysicae
Mark Gołkowski, U. S. Inan, M. B. Cohen, A. R. Gibby,
The High Frequency Active Auroral Research Program (HAARP) HF ionospheric heater is used to inject ELF/VLF signals into the magnetosphere to study wave‐ ...
Tópico(s): Solar and Space Plasma Dynamics
2010 - American Geophysical Union | Journal of Geophysical Research Atmospheres
A. V. Streltsov, T. R. Pedersen, Е. В. Мишин, Arnold Snyder,
... performed during an ionospheric heating experiment at the High Frequency Active Auroral Research Program (HAARP) facility in Alaska on 29 October 2008. ...
Tópico(s): Geomagnetism and Paleomagnetism Studies
2010 - American Geophysical Union | Journal of Geophysical Research Atmospheres
A. V. Streltsov, Mark Gołkowski, U. S. Inan, K. Papadopoulos,
... Earth's magnetosphere. An experiment conducted at the High Frequency Active Auroral Research Program (HAARP) on 16 March 2008 demonstrates that ionospherically ...
Tópico(s): Solar and Space Plasma Dynamics
2010 - American Geophysical Union | Journal of Geophysical Research Atmospheres
A. Parent, I. R. Mann, I. J. Rae,
... IAR) measured by the induction magnetometer at the High Frequency Active Auroral Research Program (HAARP) ionospheric observatory during a substorm on 28 ...
Tópico(s): Geophysics and Gravity Measurements
2010 - American Geophysical Union | Journal of Geophysical Research Atmospheres
M. J. Kosch, T. R. Pedersen, Е. В. Мишин, Shin‐ichiro Oyama, John P. Hughes, A. Senior, B. J. Watkins, B. Bristow,
On 4 February 2005, the High‐frequency Active Auroral Research Program (HAARP) facility was operated in O and X mode while pointing into the magnetic zenith to produce artificial optical emissions in ...
Tópico(s): GNSS positioning and interference
2007 - American Geophysical Union | Journal of Geophysical Research Atmospheres
R. C. Moore, U. S. Inan, T. F. Bell, Edward J. Kennedy,
... HF heating of the auroral electrojet by the High frequency Active Auroral Research Program (HAARP) HF transmitter in Gakona, Alaska, and detected ...
Tópico(s): Underwater Vehicles and Communication Systems
2007 - American Geophysical Union | Journal of Geophysical Research Atmospheres
G. M. Milikh, A. Vartanyan, K. Papadopoulos, M. Parrot,
... waves using the Ionospheric Research Instrument of the High Frequency Active Auroral Research Program located in Gakona, Alaska and detecting them with ...
Tópico(s): Seismic Waves and Analysis
2011 - Elsevier BV | Journal of Atmospheric and Solar-Terrestrial Physics
... using the dual-beam heating capability of the High frequency Active Auroral Research Program (HAARP) HF transmitter in Gakona, Alaska, are compared ...
Tópico(s): Seismic Waves and Analysis
2011 - American Geophysical Union | Journal of Geophysical Research Atmospheres
Mark Gołkowski, M. B. Cohen, D. L. Carpenter, U. S. Inan,
Abstract [1] The ionospheric heating facility of the High Frequency Active Auroral Research Program (HAARP) has been used extensively in the last ...
Tópico(s): Solar and Space Plasma Dynamics
2011 - American Geophysical Union | Journal of Geophysical Research Atmospheres
G. Jin, M. Spasojević, M. B. Cohen, U. S. Inan, N. G. Lehtinen,
... ionosphere have been conducted and refined at the High Frequency Active Auroral Research Program (HAARP) facility at Gakona, Alaska.Because this technique ...
Tópico(s): GNSS positioning and interference
2011 - American Geophysical Union | Journal of Geophysical Research Atmospheres