| Автор | Marubashi, K. |
| Автор | Grebowsky, J. M. |
| Автор | Taylor, H. A. |
| Автор | Luhmann, J. G. |
| Автор | Russell, C. T. |
| Автор | Barnes, A. |
| Дата выпуска | 1985 |
| dc.description | Magnetic field structures are analyzed for both the ionospheric hole region and the magnetosheath‐ionosphere interaction region of the nightside of Venus, in search of possible coupling between these two regimes. A magnetic coordinate system based on the directions of the solar wind and the interplanetary magnetic field (IMF) is found to order the data reasonably well, allowing consistent superposition of observational data from individual passes of the Pioneer Venus orbiter. The main findings are (1) ionospheric holes form in a zone of ±45° magnetic latitude covering possibly the entire width of the Venus wake in the longitudinal direction; (2) the magnetic field within the holes is strong and ordered, and its direction is determined by the IMF direction, being consistent with the field line draping concept; (3) the magnetic field direction in the holes, particularly at low altitudes near the terminator, shows evidence for the existence of strong plasma flow toward the antisolar meridian in the direction parallel to the magnetic equatorial plane; and (4) the average magnetic field distribution in the nightside magnetosheath also evidences strong plasma flow toward the antisolar meridian. Together these results strongly indicate that the magnetosheath plasma flow in the wake region plays an important role in forming the ionospheric holes, through deformation of the nightside ionopause. These results are combined in a model of the three‐dimensional magnetic field structure around the ionosphere of Venus. |
| Формат | application.pdf |
| Копирайт | Copyright 1985 by the American Geophysical Union. |
| Тема | IONOSPHERE |
| Тема | Planetary ionospheres |
| Тема | MAGNETOSPHERIC PHYSICS |
| Тема | Planetary magnetospheres |
| Тема | PLANETARY SCIENCES: SOLID SURFACE PLANETS |
| Тема | Planetology: Solid Surface Planets and Satellites: Ionospheres |
| Тема | Planetology: Solid Surface Planets and Satellites: Magnetic fields |
| Тема | Ionospheres |
| Тема | Magnetospheres |
| Тема | PLANETARY SCIENCES: FLUID PLANETS |
| Тема | Ionospheres |
| Тема | Magnetospheres |
| Тема | PLANETARY SCIENCES: COMETS AND SMALL BODIES |
| Тема | Ionospheres |
| Тема | Magnetospheres |
| Название | Magnetic field in the wake of Venus and the formation of ionospheric holes |
| Тип | article |
| DOI | 10.1029/JA090iA02p01385 |
| Electronic ISSN | 2156-2202 |
| Print ISSN | 0148-0227 |
| Журнал | Journal of Geophysical Research: Space Physics |
| Том | 90 |
| Первая страница | 1385 |
| Последняя страница | 1398 |
| Выпуск | A2 |
| Библиографическая ссылка | Brace, L. H., R. F.Theis, W. R.Hoegy, J. H.Wolfe, J. D.Mihalov, C. T.Russell, R. C.Elphic, A. F.Nagy, The dynamic behavior of the Venus ionosphere in response to solar wind interactions, J. Geophys. Res., 85, 7663–7678, 1980. |
| Библиографическая ссылка | Brace, L. H., R. F.Theis, W. R.Hoegy, Plasma clouds above the ionopause of Venus and their implications, Planet. Space Sci., 30, 29–37, 1982a. |
| Библиографическая ссылка | Brace, L. H., R. F.Theis, H. G.Mayr, S. A.Curtis, J. G.Luhmann, Holes in the nightside ionosphere of Venus, J. Geophys. Res., 87, 199–211, 1982b. |
| Библиографическая ссылка | Cravens, T. E., L. H.Brace, H. A.TaylorJr., C. T.Russell, W. L.Knudsen, K. L.Miller, A.Barnes, J. D.Mihalov, F. L.Scarf, S. J.Quenon, A. F.Nagy, Disapparing ionospheres on the nightside of Venus, Icarus, 51, 217–282, 1982. |
| Библиографическая ссылка | Cravens, T. E., S. L.Crawford, A. F.Nagy, T. I.Gombosi, A two‐dimensional model of the ionosphere of Venus, J. Geophys. Res., 88, 5595–5606, 1983. |
| Библиографическая ссылка | Dubinin, E. M., I. M.Podgornyi, Yu. N.Potanin, andS. I.Shkol'nikova, Determining the magnetic moment of Venus by magnetic measurements in the tail,Kosm. Issled.,16,870‐–876,1978. (Cosmic Res., Engl. Transl., 16, 693–697,1979.). |
| Библиографическая ссылка | Grebowsky, J. M., S. A.Curtis, Venus nightside ionospheric holes: The signatures of parallel electric field acceleration regions, Geophys. Res. Lett., 8, 1273–1276, 1981. |
| Библиографическая ссылка | Grebowsky, J. M., H. G.Mayr, S. A.Curtis, H. A.TaylorJr., Venus nightside horizontal plasma flow, “magnetic congestion,” and ionospheric hole production, J. Geophys. Res., 88, 3005–3012, 1983. |
| Библиографическая ссылка | Kivelson, M. G., C. T.Russell, The interaction of flowing plasmas with planetary ionospheres: A Titan‐Venus comparison, J. Geophys. Res., 88, 49–57, 1983. |
| Библиографическая ссылка | Knudsen, W. C., K.Spenner, K. L.Miller, V.Novak, Transport of ionospheric O<sup>+</sup> ions across the Venus terminator and implications, J. Geophys. Res., 85, 7803–7810, 1980. |
| Библиографическая ссылка | Knudsen, W. C., P. I.Banks, K. L.Miller, A new concept of plasma motion and planetary magnetic field for Venus, Geophys. Res. Lett., 9, 765–768, 1982. |
| Библиографическая ссылка | Luhmann, J. G., C. T.Russell, Magnetic fields in the ionospheric holes of Venus: Evidence for an intrinsic field?, Geophys. Res. Lett., 10, 409–411, 1983. |
| Библиографическая ссылка | Luhmann, J. G., R. C.Elphic, C. T.Russell, J. A.Slavin, J. D.Mihalov, Observations of large scale steady magnetic fields in the nightside Venus ionosphere and near wake, Geophys. Res. Lett., 8, 517–520, 1981. |
| Библиографическая ссылка | Luhmann, J. G., C. T.Russell, L. H.Brace, H. A.TaylorJr., W. C.Knudsen, F. L.Scarf, D. S.Colburn, A.Barnes, Pioneer Venus observations of plasma and field structure in the near wake of Venus, J. Geophys. Res., 87, 9205–9210, 1982. |
| Библиографическая ссылка | Russell, C. T., J. G.Luhmann, R. C.Elphic, F. L.Scarf, L. H.Brace, Magnetic field and plasma wave observations in a plasma cloud at Venus, Geophys. Res. Lett., 9, 45–48, 1982. |
| Библиографическая ссылка | TaylorJr., H. A., H. C.Brinton, S. J.Bauer, R. E.Hartle, Global observations of the composition and dynamics of the ionosphere of Venus: Implications for the solar wind interaction, J. Geophys. Res., 85, 7765–7777, 1980. |
| Библиографическая ссылка | TaylorJr., H. A., H. G.Mayr, J. M.Grebowsky, H. B.Niemann, R. E.Hartle, P. A.Cloutier, A.Barnes, R. E.Daneill, Modulation of dayside ion and neutral distribution at Venus: Evidence of direct and indirect solar energy inputs, Adv. Space Res., 2, 29–34, 1983. |
