Papers on Ionosphere and Upper Atmosphere
Anomalous absorption during artificial modification at harmonics of the electron gyrofrequency
A. J. Stocker,
F. Honary, T. R. Robinson,
T. B. Jones,
P. Stubbe,
A. J. Stocker
Search for more papers by this authorT. R. Robinson
Search for more papers by this authorT. B. Jones
Search for more papers by this authorA. J. Stocker,
F. Honary, T. R. Robinson,
T. B. Jones,
P. Stubbe,
A. J. Stocker
Search for more papers by this authorT. R. Robinson
Search for more papers by this authorT. B. Jones
Search for more papers by this authorAbstract
Observations of the anomalous absorption of low-power HF probe waves caused by the action of a high-power HF ordinary mode radio wave are presented. At pump frequencies in the vicinity of harmonics of the electron gyrofrequency the anomalous absorption measured on the low-power probe waves exhibit local minima. Also at these frequencies, large-scale changes deduced from phase measurements of the low-power probe waves and heater self-absorption are reduced, whereas the growth time of the anomalous absorption is increased. The electron gyrofrequency estimated from the frequency of the absorption minimum compares favorably with that derived from the International Geomagnetic Reference Field (IGRF) magnetic field model.
References
- Belyakova, V. N., et al., The features of excitation of plasma turbulence by a high-power radio wave field under even-order gyroresonance conditions, Geomagn. Aeron., 31, 367–370, 1991.
- Cohen, R., J. D. Whitehead, Radio-reflectivity detection of artificial modification of the ionospheric F layer, J. Geophys. Res., 75, 6439–6445, 1970.
- Das, A. C., J. A. Fejer, Resonance instability of small-scale field-aligned irregularities, J. Geophys. Res., 84, 6701–6704, 1979.
- Dysthe, K. B., E. Mjølhus, H. L. Pesceli, K. Rypdal, A thermal oscillating two-stream instability, Phys. Fluids, 26, 146–157, 1983.
- Fejer, J. A., H. Kopka, The effects of plasma instabilities on the ionospherically reflected wave from a high power transmitter, J. Geophys. Res., 86, 5746–5750, 1981.
- Fejer, J. A., C. A. Gonzales, H. M. Ierkic, M. P. Sulzer, C. A. Tepley, L. M. Duncan, F. T. Djuth, S. Ganguly, W. E. Gordon, Ionospheric modification experiments with the Arecibo heating facility, J. Atmos. Terr. Phys., 47, 1165–1179, 1985.
- Fialer, P. A., Field-aligned scattering from a heated region in the ionosphere — Observations at HF and VHF, Radio Sci., 9, 923–940, 1974.
- Graham, K. N., J. A. Fejer, Anomalous radio wave absorption due to ionospheric heating effects, Radio Sci., 11, 1057–1063, 1976.
- Jones, R. M., J. J. Stephenson, A versatile 3D ray tracing computer program for radio waves in the ionosphereRep. OT75-76U.S. Dep. of Commerce, Washington, D.C., 1975.
- Jones, T. B., T. Robinson, P. Stubbe, H. Kopka, Phase changes induced in a diagnostic radio wave passing through a heated region of the auroral ionosphere, J. Geophys. Res., 87, 1557–1564, 1982.
- Jones, T. B., T. R. Robinson, P. Stubbe, H. Kopka, Frequency dependence of anomalous absorption caused by high power radio waves, J. Atmos. Terr. Phys., 46, 147–153, 1984.
- Jones, T. B., T. R. Robinson, P. Stubbe, H. Kopka, EISCAT observations of the heated ionosphere, J. Atmos. Terr. Phys., 48, 1027–1035, 1986.
- Kuo, S. P., M. C. Lee, On parametric excitation of plasma modes at upper-hybrid resonance, Phys. Lett. A, 91, 444–446, 1982.
- Leyser, T. B., Parametric interaction between upper hybrid and lower hybrid waves in heating experiments, Geophys. Res. Lett., 18, 408–411, 1991.
- Leyser, T. B., B. Thidé, H. Derblom, Å. Hedberg, B. Lundborg, P. Stubbe, H. Kopka, Stimulated electromagnetic emission near electron cyclotron harmonics in the ionosphere, Phys. Res. Lett., 63, 1145–1147, 1989.
- Leyser, T. B., B. Thidé, H. Derblom, Å. Hedberg, B. Lundborg, P. Stubbe, H. Kopka, Dependence of stimulated electromagnetic emission on the ionosphere and pump wave, J. Geophys. Res., 95, 17233–17244, 1990.
- Leyser, T. B., B. Thide, S. Goodman, M. Waldenvik, E. Veszelei, S. M. Grach, A. N. Karashtin, G. P. Komrakov, D. S. Kotik, Narrow cyclotron harmonic absorption resonances of stimulated electromagnetic emission in the ionosphere, Phys. Rev. Lett., 68, 3299–3302, 1992.
- Lobachevsky, L. A., Yu. V. Gruzdev, V. Yu. Kim, G. A. Mikhaylova, V. A. Panchenko, V. P. Polimatidi, V. A. Puchkov, V. V. Vaskov, P. Stubbe, H. Kopka, Observations of ionospheric modification by the Tromsø heating facility with the mobile diagnostic equipment of IZMIRAN, J. Atmos. Terr. Phys., 54, 75–85, 1992.
- Lühr, H., S. Thürey, N. Klöcker, The EISCAT-magnetometer cross: Operational aspects — first results, Geophys. Surv., 6, 305–315, 1984.
- Perkins, F. W., A theoretical model for short-scale field-aligned plasma density striations, Radio Sci., 9, 1065–1070, 1974.
- Rao, N. N., D. J. Kaup, Upper hybrid mode conversion and resonance excitation of Bernstein modes in ionospheric heating experiments, J. Geophys. Res., 95, 17245–17252, 1990.
- Robinson, T. R., The excitation of plasma waves and irregularities in the ionosphere by means of high power radio waves, Plasma Phys. Controlled Fusion, 30, 45–56, 1988.
- Robinson, T. R., The heating of the high latitude ionosphere by high power radio waves, Phys. Rep., 179, 79–209, 1989.
- Ryzhov, Yu. A., Thermal radiation in a randomly inhomogeneous medium, Sov. Phys. JETP, Engl. Transl., 32, 120–124, 1971.
- Ryzhov, Yu. A., Absorption of the energy of an electromagnetic field in a randomly inhomogeneous plasma, Sov. Phys. JETP, Engl. Transl., 35, 490–493, 1972.
- Stocker, A. J., T. R. Robinson, T. B. Jones, Observations of the effects of ionospheric heating on the amplitude of low power diagnostic radio waves at Arecibo, J. Geophys. Res., 97, 6315–6322, 1992a.
- Stocker, A. J., F. Honary, T. R. Robinson, T. B. Jones, P. Stubbe, H. Kopka, EISCAT observations of large scale electron temperature and electron density perturbations caused by high power HF radio waves, J. Atmos. Terr. Phys., 54, 1555–1572, 1992b.
- Stubbe, P., H. Kopka, Modification of the F-region by powerful radio waves, Exploration of the polar Upper Atmosphere C. S. Deehr, J. A. Holtet, 83, D. Reidel, Norwell, Mass., 1980.
10.1007/978-94-009-8417-2_6 Google Scholar
- Stubbe, P., H. Kopka, Stimulated electromagnetic emissions in a magnetized plasma: A new symmetric spectral feature, Phys. Rev. Lett., 65, 183–186, 1990.
- Stubbe, P., H. Kopka, T. B. Jones, T. Robinson, Wide band attenuation of radio waves caused by powerful HF waves: Saturation and dependence of ionospheric variability, J. Geophys. Res., 87, 1551–1555, 1982a.
- Stubbe, P., et al., Ionospheric modification experiments in northern Scandinavia, J. Atmos. Terr. Phys., 44, 1025–1041, 1982b.
- Stubbe, P., H. Kopka, B. Thide, H. Derblom, Stimulated Electromagnetic Emission: A New technique to study the parametric decay instability in the ionosphere, J. Geophys. Res., 89, 7523–7536, 1984.
- Thide, B., H. Kopka, P. Stubbe, Observations of stimulated scattering of a strong high-frequency radio wave in the ionosphere, Phys. Rev. Lett., 49, 1561–1564, 1982.
- Thidé, B., H. Derblom, Å. Hedberg, H. Kopka, P. Stubbe, Observations of stimulated electromagnetic emissions in ionospheric heating experiments, Radio Sci., 18, 851–859, 1983.
- Thidé, B., H. Hedberg, J. A. Fejer, M. P. Sulzer, First Observations of stimulated electromagnetic emission at Arecibo, Geophys. Res. Lett., 16, 369–372, 1989.
- Titheridge, J. E., Ionogram analysis with the generalized program POLANRep. UAG-93, 1–194World Data Cent. A for Sol.-Terr. Phys., NOAA, E/GC2, Boulder, Colo., 1985.
- Titheridge, J. E., The real height analysis of ionograms: A generalized formulation, Radio Sci., 23, 831–849, 1988.
- Utlaut, W. F., E. J. Violette, A summary of vertical incidence radio observations of ionospheric modifications, Radio Sci., 9, 895–903, 1974.
- Vas'kov, V. V., A. V. Gurevich, Nonlinear resonant instability of plasma in the reflection region of an ordinary electromagnetic wave, Sov. Phys. JETP, Engl. Transl., 42, 91–97, 1975.
- Vas'kov, V. V., A. V. Gurevich, Resonance instability of small scale perturbations, Sov. Phys. JETP, Engl. Transl., 46, 487–494, 1977.
