New electron gyroharmonic effects in HF scatter from pump-excited magnetic field-aligned ionospheric irregularities
نویسندگان
چکیده
منابع مشابه
Spatiotemporal evolution of radio wave pump-induced ionospheric phenomena near the fourth electron gyroharmonic
[1] On 12 November 2001, the European Incoherent Scatter (EISCAT) high-frequency (HF) radio wave transmitter facility, operating in O-mode at 5.423 MHz with 550 MW effective radiated power, produced artificial optical rings which appeared immediately at transmitter turn-on and collapsed into blobs after 60 s while descending in altitude. A similar descent in altitude was observed in the EISCAT ...
متن کاملSpatial structure of auroral day-time ionospheric electron density irregularities generated by a powerful HF-wave
We describe an experiment in satellite radiowave probing of the ionosphere, modi®ed by powerful waves from the HF heating facility at Tromsù (Norway) in May 1995. Amplitude scintillations and variations of the phase of VHF signals from Russian navigational satellites passing over the heated region were observed. We show that both large-scale electron density irregularities (several tens of kilo...
متن کاملMulti-frequency HF radar measurements of artificial F-region field-aligned irregularities
We present radar backscatter power measurements using the CUTLASS HF radar at Hankasalmi, Finland from F-region field-aligned irregularities induced by HF radio pumping with the EISCAT Heating facility. A novel radar operating mode is used in which the radar frequency is rapidly swept through a number of bands, making use of the varying ionospheric refraction to probe different heights within t...
متن کاملAspect sensitivity of VHF echoes from field aligned irregularities
Aspect sensitivity of VHF echoes from field aligned irregularities in meteor trails and thin ionization layers Q. H. Zhou, Y. T. Morton, J. D. Mathews, and D. Janches 3 Manufacturing Engineering Department, Miami University, Oxford, OH, USA CSSL, Pennsylvania State University, University Park, PA, USA Arecibo Observatory, Arecibo, Puerto Rico Received: 29 September 2003 – Accepted: 23 January 2...
متن کاملStudies of Ionospheric Irregularities: Origins and Effects
The long-term goal of this project is to study waves, irregularities, and propagation in the earth's ionosphere, particularly with respect to GPS. The project has two foci: first, to understand how the ionosphere affects GPS signals and second, how GPS can be used for remote sensing of the ionosphere. In association with these goals, we additionally conduct in situ experiments on satellites and...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Geophysical Research: Space Physics
سال: 1999
ISSN: 0148-0227
DOI: 10.1029/1999ja900039