Title: Plasma waves in the dayside polar cusp: 1, Magnetospheric observations
Abstract: Journal of Geophysical Research (1896-1977)Volume 77, Issue 13 p. 2274-2293 Plasma waves in the dayside polar cusp: 1, Magnetospheric observations F. L. Scarf, F. L. ScarfSearch for more papers by this authorR. W. Fredricks, R. W. FredricksSearch for more papers by this authorI. M. Green, I. M. GreenSearch for more papers by this authorC. T. Russell, C. T. RussellSearch for more papers by this author F. L. Scarf, F. L. ScarfSearch for more papers by this authorR. W. Fredricks, R. W. FredricksSearch for more papers by this authorI. M. Green, I. M. GreenSearch for more papers by this authorC. T. Russell, C. T. RussellSearch for more papers by this author First published: 1 May 1972 https://doi.org/10.1029/JA077i013p02274Citations: 75AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Abstract We present a general survey of the Ogo 5 plasma-wave measurements for the dayside polar-cusp encounters of November 1, 1968, and a detailed analysis of the observations at the low-altitude (r ≃ 3–5 RE) cusp boundaries. The survey section contains an over-all discussion of the ULF magnetic-field wave levels and the VLF electric-field amplitude ranges measured from perigee out to 9 RE on November 1, 1968. These cusp-associated observations are compared with those made on October 27 and November 6, 1968, when Ogo 5 traversed the dayside magnetosphere without encountering the cusp. At the November 1 low-altitude cusp boundaries, we show that intense wave levels were detected over a broad spectral region at the steep gradients in cusp plasma density and thermal energy. The results are interpreted in terms of drift instabilities for low-β plasmas with hot ions, and associated wave-particle and wave-wave interactions are briefly discussed. References Aref'ev, V. I., Turbulent heating of ions in a plasma with a strongly nonuniform magnetic field, Engl. Transl, Sov. Phys. JETP, 30, 745, 1970. Armstrong, J. C., A. J. Zmuda, Field-aligned current at 1100 km in the auroral region measured by satellite, J. Geophys. Res., 75, 7122, 1970. Buneman, O., Instability, turbulence and conductivity in current-carrying plasma, Phys. Rev. Lett., 1, 8, 1958. Carpenter, D. L., F. Walter, R. E. Barrington, D. J. McEwen, Alouette 1 and 2 observations of abrupt changes in whistler rate and VLF noise variations at the plasmapause—A satellite ground study, J. Geophys. Res., 73, 2929, 1968. Cauffman, D. P., A satellite study of dc electric field reversals in the magnetosphereTech. Rep. 71–15Univ. of Iowa, Iowa CityMay, 1971. Chappell, C. R., K. K. Harris, G. W. Sharp, Ogo 5 measurements of the plasmasphere during observations of stable auroral red arcs, J. Geophys. Res., 76, 2357, 1971a. Chappell, C. R., K. K. Harris, G. W. Sharp, The dayside of the plasmasphere, J. Geophys. Res., 76, 7632, 1971b. Coroniti, F. V., R. W. Fredricks, C. F. Kennel, F. L. Scarf, Fast time resolved spectral analysis of VLF banded emissions, J. Geophys. Res., 76, 2366, 1971. Crook, G. M., F. L. Scarf, R. W. Fredricks, I. M. Green, P. Lukas, The Ogo-5 plasma wave detector: Instrumentation and in-flight operation, IEEE Trans. Geosci. Elec., GE-7, 120, 1969. Frank, L. A., Comments on a proposed magnetospheric model, J. Geophys. Res., 76, 2512, 1971a. Frank, L. A., Plasma in the earth's polar magnetosphere, J. Geophys. Res., 76, 5202, 1971b. Frank, L. A., K. L. Ackerson, Observations of charged-particle precipitation into the auroral zone, J. Geophys. Res., 76, 3612, 1971a. Frank, L. A., K. L. Ackerson, Local-time survey of plasma at low altitudes over the auroral zonesTech. Rep. 71–40Univ. of Iowa, Iowa CityAugust, 1971b. Frank, L. A., D. A. Gurnett, Distributions of plasmas and electric fields over the auroral zones and polar caps, J. Geophys. Res., 76, 6829, 1971. Forslund, D. W., C. F. Kennel, J. M. Kindel, Current-driven electrostatic and electromagnetic ion cyclotron instabilitiesTech. Rep. R-87Univ. of Calif. at Los Angeles, Los AngelesFebruary, 1971. Fredricks, R. W., G. M. Crook, C. F. Kennel, I. M. Green, F. L. Scarf, P. J. Coleman, C. T. Russell, Ogo 5 observations of electrostatic turbulence in bow-shock magnetic structures, J. Geophys. Res., 75, 3751, 1970. Gurnett, D. A., L. A. Frank, VLF hiss and related plasma observations in the polar magnetosphere, J. Geophys. Res., 77, 172, 1972a. Gurnett, D. A., L. A. Frank, ELF noise bands associated with auroral arcs, J. Geophys. Res., 77, 1972b. Heikkila, W. J., J. D. Winningham, Penetration of magnetosheath plasm a to low altitudes through the dayside magnetospheric cusps, J. Geophys. Res., 76, 883, 1971. Hoffman, R. A., Properties of low energy particle impacts in the polar domain in the dawn and dayside hoursTech. Rep. X-646-71-199Goddard Space Flight Center, Greenbelt, Md.June, 1971. Kennel, C. F., F. L. Scarf, R. W. Fredricks, J. H. McGehee, F. V. Coroniti, VLF electricfield observations in the magnetosphere, J. Geophys. Res., 75, 6136, 1970. Krall, N., Drift waves, Advances in Plasma Physics, 1 A. Simon, W. B. Thompson, 153, Interscience, New York, 1968. Russell, C. T., C. R. Chappell, M. D. Montgomery, M. Neugebauer, F. L. Scarf, Ogo 5 observations of the polar cusp on November 1, 1968, J. Geophys. Res., 76, 6743, 1971. Sagdeev, R. Z., A. A. Galeev, Nonlinear plasma theoryTech. Rep. IC/66/64Int. Centre for Theoret. Phys, Trieste, Italy, 1966. Scarf, F. L., R. W. Fredricks, E. J. Smith, A. M. A. Frandsen, G. P. Serbu, Ogo 5 observations of LHR noise, emissions, and whistlers near the plasmapause at several earth radii during a large magnetic storm, J. Geophys. Res., 7710, 1776, 1972a. Scarf, F. L., R. W. Fredricks, C. T. Russell, Plasma waves in the dayside polar cusp, 2, The magnetopause and polar magnetosheath, J. Geophys. Res., 1972b. Sizonenko, V. L., K. N. Stepanov, Plasma instability in the electric field of an ion-cyclotron wave, Nucl. Fus., 7, 131, 1967. Sizonenko, V. L., K. N. Stepanov, Turbuleni heating of plasma ions by an electron-acoustic instability, Engl. Transl, Sov. Phys. JETP, 29, 174, 1969. Smith, E. J., R. E. Holzer, C. T. Russell, Magnetic emissions in the magnetosheath at frequencies near 100 Hz, J. Geophys. Res., 74, 3027, 1969. Stringer, T. E., VLF modes and instabilities in nonuniform plasma, Plasma Waves in Space and in the Laboratory J. O. Thomas, B. J. Landmark, 475, University of Edinburgh Press, Edinburgh, 1969. Winningham, J. D., Characteristics of magnetosheath plasma observed at low altitudes in the dayside magnetospheric cusps, Tech. RepUniv. of Texas at Dallas, Dallas7July, 1971. Citing Literature Volume77, Issue13Space Physics1 May 1972Pages 2274-2293 ReferencesRelatedInformation
Publication Year: 1972
Publication Date: 1972-05-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 85
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