A snapshot of the polar ionosphere
This paper presents a picture of the north polar F layer and topside ionosphere obtained primarily from three satellites (Alouette 2, ISIS 1, ISIS 2), that passed over the region within a time interval of ca. 50 min on 25 April 1971, a magnetically quiet day. The horizontal distribution of electron...
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| Veröffentlicht in: | Planetary and space science 1976, Vol.24 (1), p.25,IN1,29-28,IN2,32 |
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| container_end_page | 28,IN2,32 |
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| container_issue | 1 |
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| container_title | Planetary and space science |
| container_volume | 24 |
| creator | Whitteker, J.H. Brace, L.H. Maier, E.J. Burrows, J.R. Dodson, W.H. Winningham, J.D. |
| description | This paper presents a picture of the north polar
F layer and topside ionosphere obtained primarily from three satellites (Alouette 2, ISIS 1, ISIS 2), that passed over the region within a time interval of
ca. 50 min on 25 April 1971, a magnetically quiet day. The horizontal distribution of electron densities at the peak of the
F layer is found to be similar to synoptic results from the IGY. Energetic particle and ionospheric plasma data are also presented, and the
F layer data are discussed in terms of these measurements, and also in terms of electric field and neutral N
2 density measurements made by other satellites on other occasions. The major features observed are as follows: A tongue of
F region ionization extends from the dayside across the polar cap, which is accounted for by antisunward drift due to magnetospheric convection. In the
F layer and topside ionosphere, the main effect of auroral precipitation appears to be heating and expansion of the topside. A region of low
F layer density appears on the morning side of the polar cap, which may be due to convection and possibly also to enhanced N
2 densities. |
| doi_str_mv | 10.1016/0032-0633(76)90057-X |
| format | Article |
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F layer and topside ionosphere obtained primarily from three satellites (Alouette 2, ISIS 1, ISIS 2), that passed over the region within a time interval of
ca. 50 min on 25 April 1971, a magnetically quiet day. The horizontal distribution of electron densities at the peak of the
F layer is found to be similar to synoptic results from the IGY. Energetic particle and ionospheric plasma data are also presented, and the
F layer data are discussed in terms of these measurements, and also in terms of electric field and neutral N
2 density measurements made by other satellites on other occasions. The major features observed are as follows: A tongue of
F region ionization extends from the dayside across the polar cap, which is accounted for by antisunward drift due to magnetospheric convection. In the
F layer and topside ionosphere, the main effect of auroral precipitation appears to be heating and expansion of the topside. A region of low
F layer density appears on the morning side of the polar cap, which may be due to convection and possibly also to enhanced N
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F layer and topside ionosphere obtained primarily from three satellites (Alouette 2, ISIS 1, ISIS 2), that passed over the region within a time interval of
ca. 50 min on 25 April 1971, a magnetically quiet day. The horizontal distribution of electron densities at the peak of the
F layer is found to be similar to synoptic results from the IGY. Energetic particle and ionospheric plasma data are also presented, and the
F layer data are discussed in terms of these measurements, and also in terms of electric field and neutral N
2 density measurements made by other satellites on other occasions. The major features observed are as follows: A tongue of
F region ionization extends from the dayside across the polar cap, which is accounted for by antisunward drift due to magnetospheric convection. In the
F layer and topside ionosphere, the main effect of auroral precipitation appears to be heating and expansion of the topside. A region of low
F layer density appears on the morning side of the polar cap, which may be due to convection and possibly also to enhanced N
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F layer and topside ionosphere obtained primarily from three satellites (Alouette 2, ISIS 1, ISIS 2), that passed over the region within a time interval of
ca. 50 min on 25 April 1971, a magnetically quiet day. The horizontal distribution of electron densities at the peak of the
F layer is found to be similar to synoptic results from the IGY. Energetic particle and ionospheric plasma data are also presented, and the
F layer data are discussed in terms of these measurements, and also in terms of electric field and neutral N
2 density measurements made by other satellites on other occasions. The major features observed are as follows: A tongue of
F region ionization extends from the dayside across the polar cap, which is accounted for by antisunward drift due to magnetospheric convection. In the
F layer and topside ionosphere, the main effect of auroral precipitation appears to be heating and expansion of the topside. A region of low
F layer density appears on the morning side of the polar cap, which may be due to convection and possibly also to enhanced N
2 densities.</abstract><pub>Elsevier Ltd</pub><doi>10.1016/0032-0633(76)90057-X</doi><tpages>8</tpages></addata></record> |
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| ispartof | Planetary and space science, 1976, Vol.24 (1), p.25,IN1,29-28,IN2,32 |
| issn | 0032-0633 1873-5088 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_22711989 |
| source | ScienceDirect Freedom Collection (Elsevier) |
| title | A snapshot of the polar ionosphere |
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