Abstract
This review covers several aspects of magnetopause research during the two-year period from mid-1991 to mid-1993. It focusses upon three topics which received renewed attention: the structure of the steady-state magnetopause, the origin of the transient events which are superimposed upon it, and the cause of transient signatures observed by high-latitude dayside ground magnetometers. Case and statistical studies defined the relatively unknown characteristics of the magnetosheath plasma layers lying outside the magnetopause, while theoretical studies provided alternative explanations for the presence of magnetosheath plasma within the LLBL. Evidence was presented for a steady transition from magnetosheath to magnetospheric plasma parameters. Detailed studies described the plasma, energetic particle, and magnetic field characteristics of transient events in the outer dayside magnetosphere, and multipoint studies provided important new information concerning the ionospheric response to sudden changes in solar wind parameters. This review emphasizes the competing explanations which have been advanced to explain these phenomena.
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Anderson, B. J., Fuselier, S. A. and Murr, D.: 1991, ‘Electromagnetic Ion Cyclotron Waves Observed in the Plasma Depletion Layer’,Geophys. Res. Lett. 18, 1955–1958.
Anderson, B. J. and Fuselier, S. A.: 1993, ‘Magnetic Pulsations from 0.1 to 4.0 Hz and Associated Plasma Properties in the Earth's Magnetosheath and Plasma Depletion Layer’,J. Geophys. Res. 98, 1461–1479.
Bering, E. A., III, Lanzerotti, L. J., Benbrook, J. R., Lin, Z. -M., Maclennan, C. G., Wolfe, A., Lopez, R. E. and Friis-Christensen, E.: 1990, ‘Solar Wind Properties Observed During High-Latitude Impulsive Perturbation Events’,Geophys. Res. Lett. 17, 579–582.
Cahill, L. J., Jr. and Winckler, J. R.: 1992, ‘Periodic Magnetopause Oscillations Observed with the GOES Satellite on March 24, 1991’,J. Geophys. Res. 97, 8239–8243.
Chen, S.-H., Kivelson, M. G., Gosling, J. T., Walker, R. J. and Lazarus, A. J.: 1993, ‘Anomalous Aspects of Magnetosheath Flow and of the Shape and Oscillations of the Magnetopause During an Interval of Strongly Northward Interplanetary Magnetic Field’,J. Geophys. Res. 98, 5727–5742.
Cowley, S. W. H.: 1982, ‘The Causes of Convection in the Earth's Magnetosphere: A Review of Developments During the IMS’,Rev. Geophys. Space Phys. 20, 531–565.
Cowley, S. W. H. and Owen, C. J.: 1989, ‘A Simple Illustrative Model of Open Flux Tube Motion Over the Dayside Magnetopause’,Planet. Space Sci. 37, 1461–1475.
Daly, P. W., Saunders, M. A., Rijnbeek, R. P., Sckopke, N. and Russell, C. T.: 1984, ‘The Distribution of Reconnection Geometry in Flux Transfer Events Using Energetic Ion, Plasma and Magnetic Data’,J. Geophys. Res. 89, 3843–3854.
Eastman, T. E., Hones, E. W., Jr., Bame, S. J. and Asbridge, J. R.: 1976, ‘The Magnetospheric Boundary Layer: Site of Plasma, Momentum and Energy Transfer from the Magnetosheath into the Magnetosphere’,Geophys. Res. Lett. 3, 685–688.
Farrugia, C. J., Elphic, R. C., Southwood, D. J. and Cowley, S. W. H.: 1987, ‘Field and Flow Perturbations Outside the Reconnected Field Line Region in Flux Transfer Events: Theory’,Planet. Space Sci. 35, 227–240.
Fuselier, S. A.: 1992, ‘Energetic Magnetospheric Protons in the Plasma Depletion Layer’,J. Geophys. Res. 97, 13759–13766.
Fuselier, S. A., Klumpar, D. M., Shelley, E. G., Anderson, B. J. and Coates, A. J.: 1991, ‘He2+ and H+ Dynamics in the Subsolar Magnetosheath and Plasma Depletion Layer’,J. Geophys. Res. 96, 21095–21104.
Fuselier, S. A., Klumpar, D. M. and Shelley, E. G.: 1992, ‘Counter-Streaming Magnetosheath Ions in the Dayside Low Latitude Boundary Layer’,Geophys. Res. Lett. 19, 425–428.
Gary, S. P., Fuselier, S. A. and Anderson, B. J.: 1993, ‘Ion Anisotropy Instabilities in the Magnetosheath’,J. Geophys. Res. 98, 1481–1488.
Glassmeier, K.-H.: 1992, ‘Traveling Magnetospheric Convection Twin-Vortices: Observations and Theory’,Ann. Geophysicae 10, 547–565.
Glassmeier, K.-H. and Heppner, C.: 1992, ‘Traveling Magnetospheric Convection Twin Vortices: Another Case Study, Global Characteristics, and a Model’,J. Geophys. Res. 97, 3977–3992.
Hapgood, M. A. and Bryant, D. A.: 1992, ‘Exploring the Magnetospheric Boundary Layer’,Planet. Space Sci. 40, 1431–1459.
Heikkila, W. J.: 1992, ‘Comment on Owen and Cowley's Analysis of Impulsive Plasma Transport through the Magnetopause’,J. Geophys. Res. 97, 1639.
Hubert, D., Lacombe, C., Harvey, C. C., Mangeney, A. and Russell, C. T.: 1992, ‘Density and Field Structure of a FTE Observed in the Magnetosphere’,Geophys. Res. Lett. 19, 965–968.
Jacobsen, B., Sandholt, P. E., Lybekk, B. and Egeland, A.: 1991, ‘Transient Auroral Events Near Midday: Relationship with Solar Wind/Magnetosheath Plasma and Magnetic Field Conditions’,J. Geophys. Res. 96, 1327–1336.
Kawano, H., Kokubun, S. and Takahashi, K.: 1992, ‘Survey of Transient Magnetic Field Events in the Dayside Magnetosphere’,J. Geophys. Res. 97, 10677–10692.
Kivelson, M. G. and Southwood, D. J.: 1991, ‘Ionospheric Traveling Vortex Generation by Solar Wind Buffeting of the Magnetosphere’,J. Geophys. Res. 96, 1661–1667.
Lanzerotti, L. J., Wolfe, A., Trivedi, N., Maclennan, C. G. and Medford, L. V.: 1990, ‘Magnetic Impulse Events at High Latitudes: Magnetopause and Boundary Layer Plasma Processes’,J. Geophys. Res. 95, 97–107.
Lanzerotti, L. J., Konik, R. M., Wolfe, A., Venkatesan, D. and Maclennan, C. G.: 1991, ‘Cusp Latitude Magnetic Impulse Events 1. Occurrence Statistics’,J. Geophys. Res. 96, 14009–14022.
Le, G., Russell, C. T. and Kuo, H.: 1993, ‘Flux Transfer Events: Spontaneous or Driven?’,Geophys. Res. Lett. 20, 791–794.
Lee, L. C., Ma, Z. W., Fu, Z. F. and Otto, A.: 1993, ‘Topology of Magnetic Flux Ropes and Formation of Fossil Flux Transfer Events and Boundary Layer Plasmas’,J. Geophys. Res. 98, 3943–3951.
Lockwood, M. and Wild, M. N.: 1993, ‘On the Quasi-Periodic Nature of Magnetopause Flux Transfer Events’,J. Geophys. Res. 98, 5935–5940.
Lockwood, M., Sandholt, P. E., Cowley, S. W. H. and Oguti, T.: 1989, ‘Interplanetary Magnetic Field Control of Dayside Auroral Activity and the Transfer of Momentum Across the Dayside Magnetopause’,Planet. Space Sci. 37, 1347–1365.
Lockwood, M., Cowley, S. W. H., Sandholt, P. E. and Lepping, R. P.: 1990, ‘The Ionospheric Signatures of Flux Transfer Events and Solar Wind Dynamic Pressure Changes’,J. Geophys. Res. 95, 17113–17135.
Lockwood, M., Carlson, H. C., Jr. and Sandholt, P. E.: 1993, ‘Implications of the Altitude of Transient 630-nm Dayside Auroral Emissions’,J. Geophys. Res. 98, 15571–15587.
Lui, A. T. Y. and Sibeck, D. G.: 1991, ‘Dayside Auroral Activities and Their Implications for Impulsive Entry Processes in the Dayside Magnetosphere’,J. Atmo. Terr. Phys. 53, 219–229.
Meng, C.-I. and Anderson, K. A.: 1970, ‘A Layer of Energetic Electrons (>40 kev) Near the Magnetopause’,J. Geophys. Res. 75, 1827–1836.
Mitchell, D. G., Kutchko, F., Williams, D. J., Eastman, T. E., Frank, L. A. and Russell, C. T.: 1987, ‘An Extended Study of the Low-Latitude Boundary Layer on the Dawn and Dusk Flanks of the Magnetosphere’,J. Geophys. Res. 92, 7394–7404.
Miura, A.: 1992, ‘Kelvin-Helmholtz Instability at the Magnetospheric Boundary: Dependence on the Magnetosheath Sonic Mach number’,J. Geophys. Res. 97, 10655–10675.
Newell, P. T. and Sibeck, D. G.: 1993, ‘By Fluctuations in the Magnetosheath and Azimuthal Flow Velocity Transients in the Dayside Ionosphere’,Geophys. Res. Lett.,20, 1719–1722.
Owen, C. J. and Cowley, S. W. H.: 1991, ‘Heikkila's Mechanism for Impulsive Plasma Transport Through the Magnetopause: A Reexamination’,J. Geophys. Res. 96, 5565–5574. ‘Reply’,J. Geophys. Res.,97, 1641–1643.
Owen, C. J. and Slavin, J. A.: 1992, ‘Viscously Driven Plasma Flows in the Deep Geomagnetic Tail’,Geophys. Res. Lett. 19, 1443–1446.
Rajaram, R., Sibeck, D. G. and McEntire, R. W.: 1991, ‘Linear Theory of the Kelvin-Helmholtz Instability in the Low-Latitude Boundary Layer’,J. Geophys. Res. 96, 9615–9625.
Roth, M.: 1992, ‘On Impulsive Penetration of Solar Wind Plasmoids into the Geomagnetic Field’,Planet. Space Sci. 40, 193–201.
Russell, C. T. and Elphic, R. C.: 1978, ‘Initial ISEE Magnetometer Results: Magnetopause Observations’,Space Sci. Rev. 22, 681–715.
Russell, C. T., Berchem, J. and Luhmann, J. G.: 1985, ‘On the Source Region of Flux Transfer Events’,Adv. Space Res. 5, 363–368.
Sandholt, P. E., Moen, J. and Opsvik, D.: 1992, ‘Periodic Auroral Events at the Midday Polar Cap Boundary: Implications for Solar Wind-Magnetosphere Coupling’,Geophys. Res. Lett. 19, 1223–1226.
Saunders, M. A.: 1983, ‘Recent ISEE Observations of the Magnetopause and Low Latitude Boundary Layer: A Review’,J. Geophys. 52, 190–198.
Saunders, M. A.: 1990, ‘Magnetosheath, Magnetopause, and Low-Latitude Boundary Layer Research, 1987–1989’,J. Atmo. Terr. Phys. 52, 1107–1121.
Saunders, M. A.: 1991, ‘Quasi-Steady Dayside Reconnection’,J. Geomag. Geolectr. 43,Suppl., 141–151.
Saunders, M. A., Freeman, M. P., Southwood, D. J., Cowley, S. W. H., Lockwood, M., Samson, J. C., Farrugia, C. J. and Hughes, T. J.: 1992, ‘Dayside Ionospheric Convection Changes in Response to Long-Period Interplanetary Magnetic Field Oscillations: Determination of the Ionospheric Phase Velocity’,J. Geophys. Res. 97, 19373–19380.
Sckopke, N.: 1991, ‘Plasma Structure Near the Low-Latitude Boundary Layer, A Rebuttal’,J. Geophys. Res. 96, 9815–9820.
Sckopke, N., Paschmann, G., Haerendel, G., Sonnerup, B. U. Ö, Bame, S. J., Forbes, T. G., Hones, E. W., Jr. and Russell, C. T.: 1981, ‘Structure of the Low Latitude Boundary Layer’,J. Geophys. Res. 86, 2099–2110.
Sibeck, D. G.: 1991, ‘Quantifying the Magnetospheric Response to Solar Wind Dynamic Pressure Variations’, in T. Chang, G. B. Crew and J. R. Jasperse (eds.),Physics of Space Plasmas (1990), Scientific Publishers, Cambridge, pp. 379–396.
Sibeck, D. G.: 1992, ‘Transient Events in the Outer Magnetosphere: Boundary Waves or Flux Transfer Events?’,J. Geophys. Res. 97, 4009–4026.
Sibeck, D. G.: 1994, ‘Transient and Quasi-Periodic (5–15 min) Events in the Outer Magnetosphere’, in M. J. Engebretson and K. Takahashi (eds.),Solar Wind Sources of Magnetospheric ULF Waves, AGU, Washington, D.C., pp. 173–182.
Sibeck, D. G.: 1993, ‘Transient Magnetic Field Signatures at High Latitudes’,J. Geophys. Res. 98, 243–256.
Sibeck, D. G., Lepping, R. P. and Lazarus, A. J.: 1990, ‘Magnetic Field Draping in the Plasma Depletion Layer’,J. Geophys. Res. 95, 2433–2440.
Sibeck, D. G. and Croley, D. J.: 1991, ‘Solar Wind Dynamic Pressure Variations and Possible Ground Signatures of Flux Transfer Events’,J. Geophys. Res. 96, 1669–1683.
Song, P. and Russell, C. T.: 1992, ‘Model of the Formation of the Low-Latitude Boundary Layer for Strongly Northward Interplanetary Magnetic Field’,J. Geophys. Res. 97, 1411–1420.
Song, P., Russell, C. T. and Thomsen, M. F.: 1992, ‘Slow Mode Transition in the Frontside Magnetosheath’,J. Geophys. Res. 97, 8295–8305.
Sonnerup, B., Paschmann, G., Phan, T. -D. and Lühr, H.: 1992, ‘Magnetic Field Maxima in the Low Latitude Boundary Layer’,Geophys. Res. Lett. 19, 1727–1730.
Southwood, D. J. and Kivelson, M. G.: 1993, ‘Vortex Motion in the Ionosphere and Nonlinear Transport’,J. Geophys. Res. 98, 11459–11466.
Takahashi, K., Sibeck, D. G., Newell, P. T. and Spence, H. E.: 1991, ‘ULF Waves in the Low-Latitude Boundary Layer and Their Relationship to Magnetospheric Pulsations: A Multisatellite Observation’,J. Geophys. Res.;96, 9503–9519.
Tamao, T.: 1964, ‘A Hydromagnetic Interpretation of Geomagnetic SSC*’,Rep. Ionos. Space Res. 18, 16–24.
Traver, D. P., Mitchell, D. G., Williams, D. J., Frank, L. A. and Huang, C. Y.: 1991, ‘Two Encounters with the Flank Low-Latitude Boundary Layer: Further Evidence for Closed Field Topology and Investigation of the Internal Structure’,J. Geophys. Res. 96, 21025–21035.
Treumann, R. A., LaBelle, J. and Pottelette, R.: 1991, ‘Plasma Diffusion at the Magnetopause: The Case of Lower Hybrid Drift Waves’,J. Geophys. Res. 96, 16009–16013.
Walthour, D. W., Sonnerup, B. U. Ö., Paschmann, G., Lühr, H., Klumpar, D. and Potemra, T.: 1993, ‘Remote Sensing of Two-Dimensional Magnetopause Structures’,J. Geophys. Res. 98, 1489–1504.
Zwan, B. J. and Wolf, R. A.: 1976, ‘Depletion of Solar Wind Plasma Near a Planetary Boundary’,J. Geophys. Res. 81, 1636–1648.
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Sibeck, D.G. Coupling processes at the magnetopause. Surv Geophys 16, 267–298 (1995). https://doi.org/10.1007/BF01044570
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DOI: https://doi.org/10.1007/BF01044570