Coordinated Ground and Space Measurements of Auroral Surge over South Pole.
Coincident ground-based and satellite observations are presented of a premidnight auroral surge over Amundsen-Scott South Pole station. The set of near-simultaneous measurements provides an excellent opportunity to gain amore quantitative understanding of the nature of premidnight substorm activity...
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ftdtic:ADA191164 2023-05-15T13:24:27+02:00 Coordinated Ground and Space Measurements of Auroral Surge over South Pole. Rosenberg, T J Detrick, D L Mizera, P F Gorney, D J Berkey, F T AEROSPACE CORP EL SEGUNDO CA SPACE SCIENCES LAB 1988-02-01 text/html http://www.dtic.mil/docs/citations/ADA191164 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA191164 en eng http://www.dtic.mil/docs/citations/ADA191164 APPROVED FOR PUBLIC RELEASE DTIC AND NTIS Atmospheric Physics *AURORAE ABSORPTION ANTARCTIC REGIONS ARTIFICIAL SATELLITES ELECTRIC CURRENT ELECTRON IMPACT SPECTRA EMISSION GEOMAGNETISM HIGH LATITUDES INTENSITY IONOSPHERE LUMINOSITY MAGNETOMETERS MEASUREMENT MOTION PEAK VALUES PHOTOMETERS PRECIPITATION RIOMETERS STORMS SURGES VELOCITY X RAYS MAGNETIC STORMS South Pole Text 1988 ftdtic 2016-02-19T10:57:31Z Coincident ground-based and satellite observations are presented of a premidnight auroral surge over Amundsen-Scott South Pole station. The set of near-simultaneous measurements provides an excellent opportunity to gain amore quantitative understanding of the nature of premidnight substorm activity at high geomagnetic latitudes. The surge produced a rapid onset of cosmic radio noise absorption at the station. On the polar-orbiting DMSP-F6 spacecraft, intense X-ray emissions with E 2 keV energy were imaged 1 to 2 deg magnetically equatorward of the South Pole approximately 1 min prior to the peak of the absorption event. The precipitating electron spectrum determined from the X-ray measurements could be characterized by an e-folding energy of approx. 11 keV and is found to be adequate to account for the cosmic noise absorption and maximum auroral luminosity recorded at South Pole. Photometer, all-sky camera, riometer, and magnetometer data are used to estimate the velocity of motion and spatial extent of the auroral precipitation and the ionospheric currents associated with the surge. Text Amundsen-Scott Antarc* Antarctic South pole South pole Defense Technical Information Center: DTIC Technical Reports database Amundsen Scott South Pole Station ENVELOPE(0.000,0.000,-90.000,-90.000) Amundsen-Scott ENVELOPE(0.000,0.000,-90.000,-90.000) Amundsen-Scott South Pole Station ENVELOPE(139.273,139.273,-89.998,-89.998) Antarctic South Pole |
institution |
Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Atmospheric Physics *AURORAE ABSORPTION ANTARCTIC REGIONS ARTIFICIAL SATELLITES ELECTRIC CURRENT ELECTRON IMPACT SPECTRA EMISSION GEOMAGNETISM HIGH LATITUDES INTENSITY IONOSPHERE LUMINOSITY MAGNETOMETERS MEASUREMENT MOTION PEAK VALUES PHOTOMETERS PRECIPITATION RIOMETERS STORMS SURGES VELOCITY X RAYS MAGNETIC STORMS South Pole |
spellingShingle |
Atmospheric Physics *AURORAE ABSORPTION ANTARCTIC REGIONS ARTIFICIAL SATELLITES ELECTRIC CURRENT ELECTRON IMPACT SPECTRA EMISSION GEOMAGNETISM HIGH LATITUDES INTENSITY IONOSPHERE LUMINOSITY MAGNETOMETERS MEASUREMENT MOTION PEAK VALUES PHOTOMETERS PRECIPITATION RIOMETERS STORMS SURGES VELOCITY X RAYS MAGNETIC STORMS South Pole Rosenberg, T J Detrick, D L Mizera, P F Gorney, D J Berkey, F T Coordinated Ground and Space Measurements of Auroral Surge over South Pole. |
topic_facet |
Atmospheric Physics *AURORAE ABSORPTION ANTARCTIC REGIONS ARTIFICIAL SATELLITES ELECTRIC CURRENT ELECTRON IMPACT SPECTRA EMISSION GEOMAGNETISM HIGH LATITUDES INTENSITY IONOSPHERE LUMINOSITY MAGNETOMETERS MEASUREMENT MOTION PEAK VALUES PHOTOMETERS PRECIPITATION RIOMETERS STORMS SURGES VELOCITY X RAYS MAGNETIC STORMS South Pole |
description |
Coincident ground-based and satellite observations are presented of a premidnight auroral surge over Amundsen-Scott South Pole station. The set of near-simultaneous measurements provides an excellent opportunity to gain amore quantitative understanding of the nature of premidnight substorm activity at high geomagnetic latitudes. The surge produced a rapid onset of cosmic radio noise absorption at the station. On the polar-orbiting DMSP-F6 spacecraft, intense X-ray emissions with E 2 keV energy were imaged 1 to 2 deg magnetically equatorward of the South Pole approximately 1 min prior to the peak of the absorption event. The precipitating electron spectrum determined from the X-ray measurements could be characterized by an e-folding energy of approx. 11 keV and is found to be adequate to account for the cosmic noise absorption and maximum auroral luminosity recorded at South Pole. Photometer, all-sky camera, riometer, and magnetometer data are used to estimate the velocity of motion and spatial extent of the auroral precipitation and the ionospheric currents associated with the surge. |
author2 |
AEROSPACE CORP EL SEGUNDO CA SPACE SCIENCES LAB |
format |
Text |
author |
Rosenberg, T J Detrick, D L Mizera, P F Gorney, D J Berkey, F T |
author_facet |
Rosenberg, T J Detrick, D L Mizera, P F Gorney, D J Berkey, F T |
author_sort |
Rosenberg, T J |
title |
Coordinated Ground and Space Measurements of Auroral Surge over South Pole. |
title_short |
Coordinated Ground and Space Measurements of Auroral Surge over South Pole. |
title_full |
Coordinated Ground and Space Measurements of Auroral Surge over South Pole. |
title_fullStr |
Coordinated Ground and Space Measurements of Auroral Surge over South Pole. |
title_full_unstemmed |
Coordinated Ground and Space Measurements of Auroral Surge over South Pole. |
title_sort |
coordinated ground and space measurements of auroral surge over south pole. |
publishDate |
1988 |
url |
http://www.dtic.mil/docs/citations/ADA191164 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA191164 |
long_lat |
ENVELOPE(0.000,0.000,-90.000,-90.000) ENVELOPE(0.000,0.000,-90.000,-90.000) ENVELOPE(139.273,139.273,-89.998,-89.998) |
geographic |
Amundsen Scott South Pole Station Amundsen-Scott Amundsen-Scott South Pole Station Antarctic South Pole |
geographic_facet |
Amundsen Scott South Pole Station Amundsen-Scott Amundsen-Scott South Pole Station Antarctic South Pole |
genre |
Amundsen-Scott Antarc* Antarctic South pole South pole |
genre_facet |
Amundsen-Scott Antarc* Antarctic South pole South pole |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA191164 |
op_rights |
APPROVED FOR PUBLIC RELEASE |
_version_ |
1766379751129219072 |