Thule Riometer Observations of Polar Cap Absorption Events (1962-1972)
Polar Cap Absorption (PCA) events have been observed at Thule, Greenland, using a ground-based riometer for the past decade. The riometer was operated at a fixed frequency of 30 MHz, and used a two-element Yagi antenna directed toward the zenith. This report provides information for operational syst...
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ftdtic:AD0762279 2023-05-15T16:25:36+02:00 Thule Riometer Observations of Polar Cap Absorption Events (1962-1972) Cormier, Raymond J AIR FORCE CAMBRIDGE RESEARCH LABS HANSCOM AFB MA 1973-01-30 text/html http://www.dtic.mil/docs/citations/AD0762279 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0762279 en eng http://www.dtic.mil/docs/citations/AD0762279 Approved for public release; distribution is unlimited. DTIC AND NTIS Atmospheric Physics *IONOSPHERIC DISTURBANCES GREENLAND PROTONS RIOMETERS SCIENTIFIC SATELLITES SOLAR RADIATION *POLAR CAP ABSORPTION SOLAR PROTONS THULE(GREENLAND) Text 1973 ftdtic 2016-02-24T17:22:41Z Polar Cap Absorption (PCA) events have been observed at Thule, Greenland, using a ground-based riometer for the past decade. The riometer was operated at a fixed frequency of 30 MHz, and used a two-element Yagi antenna directed toward the zenith. This report provides information for operational systems personnel and systems designers concerning the mean behavior of PCAs and other aspects of the phenomenon; for example, the extreme cases in duration and magnitude. In addition, included as an appendix are plots of dB absorption and proton flux (obtained from satellites) versus time for each event. The total number of events is 29. Text Greenland Thule Defense Technical Information Center: DTIC Technical Reports database Greenland |
institution |
Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Atmospheric Physics *IONOSPHERIC DISTURBANCES GREENLAND PROTONS RIOMETERS SCIENTIFIC SATELLITES SOLAR RADIATION *POLAR CAP ABSORPTION SOLAR PROTONS THULE(GREENLAND) |
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Atmospheric Physics *IONOSPHERIC DISTURBANCES GREENLAND PROTONS RIOMETERS SCIENTIFIC SATELLITES SOLAR RADIATION *POLAR CAP ABSORPTION SOLAR PROTONS THULE(GREENLAND) Cormier, Raymond J Thule Riometer Observations of Polar Cap Absorption Events (1962-1972) |
topic_facet |
Atmospheric Physics *IONOSPHERIC DISTURBANCES GREENLAND PROTONS RIOMETERS SCIENTIFIC SATELLITES SOLAR RADIATION *POLAR CAP ABSORPTION SOLAR PROTONS THULE(GREENLAND) |
description |
Polar Cap Absorption (PCA) events have been observed at Thule, Greenland, using a ground-based riometer for the past decade. The riometer was operated at a fixed frequency of 30 MHz, and used a two-element Yagi antenna directed toward the zenith. This report provides information for operational systems personnel and systems designers concerning the mean behavior of PCAs and other aspects of the phenomenon; for example, the extreme cases in duration and magnitude. In addition, included as an appendix are plots of dB absorption and proton flux (obtained from satellites) versus time for each event. The total number of events is 29. |
author2 |
AIR FORCE CAMBRIDGE RESEARCH LABS HANSCOM AFB MA |
format |
Text |
author |
Cormier, Raymond J |
author_facet |
Cormier, Raymond J |
author_sort |
Cormier, Raymond J |
title |
Thule Riometer Observations of Polar Cap Absorption Events (1962-1972) |
title_short |
Thule Riometer Observations of Polar Cap Absorption Events (1962-1972) |
title_full |
Thule Riometer Observations of Polar Cap Absorption Events (1962-1972) |
title_fullStr |
Thule Riometer Observations of Polar Cap Absorption Events (1962-1972) |
title_full_unstemmed |
Thule Riometer Observations of Polar Cap Absorption Events (1962-1972) |
title_sort |
thule riometer observations of polar cap absorption events (1962-1972) |
publishDate |
1973 |
url |
http://www.dtic.mil/docs/citations/AD0762279 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0762279 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Thule |
genre_facet |
Greenland Thule |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/AD0762279 |
op_rights |
Approved for public release; distribution is unlimited. |
_version_ |
1766014406348505088 |