A Discussion of Arctic Ionograms
Example of arctic ionogram sequences, recorded on the AFCRL Flying Ionospheric Laboratory, are presented. The purpose of this paper is to show that: (a) ionogram sequences, recorded on arctic flights, facilitate the interpretation of oblique incidence echoes from E-and F-layer heights, (b) parameter...
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ftdtic:ADA083550 2023-05-15T14:38:14+02:00 A Discussion of Arctic Ionograms Wagner, R. A. Pike, C. P. AIR FORCE GEOPHYSICS LAB HANSCOM AFB MA 1980-04-14 text/html http://www.dtic.mil/docs/citations/ADA083550 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA083550 en eng http://www.dtic.mil/docs/citations/ADA083550 Approved for public release; distribution is unlimited. DTIC AND NTIS Atmospheric Physics *AURORAE *IONOSPHERIC DISTURBANCES F REGION IONOGRAMS LATITUDE SUNLIGHT NIGHT ECHOES ARCTIC REGIONS ARCTIC IONOGRAMS E REGION PE62101F WUAFGL56311401 Text 1980 ftdtic 2016-02-22T15:20:51Z Example of arctic ionogram sequences, recorded on the AFCRL Flying Ionospheric Laboratory, are presented. The purpose of this paper is to show that: (a) ionogram sequences, recorded on arctic flights, facilitate the interpretation of oblique incidence echoes from E-and F-layer heights, (b) parameters of the arctic ionosphere can be mapped by using the 'auroral oval' as an ordering system, (c) vertical and oblique incidence echoes, appearing on ground station ionograms, can be interpreted in terms of the station's position relative to the auroral oval. The analysis of a three hour flight with 6 latitudinal scans underneath an auroral band shows the close relationship between auroral sporadic E echoes (Esa) and discrete aurora. The investigation of 49 latitudinal scans through the auroral oval during times of low magnetic activity revealed the existence of a particle produced E layer which is oval aligned, is 2 deg to 6 deg wide in corrected geomagnetic latitude and occurs at all corrected geomagnetic times. This layer produces the night E echoes. A new ionogram analysis procedure, which uses oblique incidence F-layer echoes, is demonstrated, and the feasibility of monitoring the latitude of the southern edge of the polar F-layer irregularity zone by using this new analysis procedure is demonstrated. Presented at the AGARD Technical Meeting in Lindau/Harz, Germany, Sep 1971. Text Arctic Defense Technical Information Center: DTIC Technical Reports database Arctic |
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Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Atmospheric Physics *AURORAE *IONOSPHERIC DISTURBANCES F REGION IONOGRAMS LATITUDE SUNLIGHT NIGHT ECHOES ARCTIC REGIONS ARCTIC IONOGRAMS E REGION PE62101F WUAFGL56311401 |
spellingShingle |
Atmospheric Physics *AURORAE *IONOSPHERIC DISTURBANCES F REGION IONOGRAMS LATITUDE SUNLIGHT NIGHT ECHOES ARCTIC REGIONS ARCTIC IONOGRAMS E REGION PE62101F WUAFGL56311401 Wagner, R. A. Pike, C. P. A Discussion of Arctic Ionograms |
topic_facet |
Atmospheric Physics *AURORAE *IONOSPHERIC DISTURBANCES F REGION IONOGRAMS LATITUDE SUNLIGHT NIGHT ECHOES ARCTIC REGIONS ARCTIC IONOGRAMS E REGION PE62101F WUAFGL56311401 |
description |
Example of arctic ionogram sequences, recorded on the AFCRL Flying Ionospheric Laboratory, are presented. The purpose of this paper is to show that: (a) ionogram sequences, recorded on arctic flights, facilitate the interpretation of oblique incidence echoes from E-and F-layer heights, (b) parameters of the arctic ionosphere can be mapped by using the 'auroral oval' as an ordering system, (c) vertical and oblique incidence echoes, appearing on ground station ionograms, can be interpreted in terms of the station's position relative to the auroral oval. The analysis of a three hour flight with 6 latitudinal scans underneath an auroral band shows the close relationship between auroral sporadic E echoes (Esa) and discrete aurora. The investigation of 49 latitudinal scans through the auroral oval during times of low magnetic activity revealed the existence of a particle produced E layer which is oval aligned, is 2 deg to 6 deg wide in corrected geomagnetic latitude and occurs at all corrected geomagnetic times. This layer produces the night E echoes. A new ionogram analysis procedure, which uses oblique incidence F-layer echoes, is demonstrated, and the feasibility of monitoring the latitude of the southern edge of the polar F-layer irregularity zone by using this new analysis procedure is demonstrated. Presented at the AGARD Technical Meeting in Lindau/Harz, Germany, Sep 1971. |
author2 |
AIR FORCE GEOPHYSICS LAB HANSCOM AFB MA |
format |
Text |
author |
Wagner, R. A. Pike, C. P. |
author_facet |
Wagner, R. A. Pike, C. P. |
author_sort |
Wagner, R. A. |
title |
A Discussion of Arctic Ionograms |
title_short |
A Discussion of Arctic Ionograms |
title_full |
A Discussion of Arctic Ionograms |
title_fullStr |
A Discussion of Arctic Ionograms |
title_full_unstemmed |
A Discussion of Arctic Ionograms |
title_sort |
discussion of arctic ionograms |
publishDate |
1980 |
url |
http://www.dtic.mil/docs/citations/ADA083550 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA083550 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA083550 |
op_rights |
Approved for public release; distribution is unlimited. |
_version_ |
1766310352326230016 |