RESEARCH ON VLF PROPAGATION IN ARCTIC REGIONS. GEOPHYSICAL EFFECTS
Atmospheric noise data collected in the Arctic were used to determine certain geophysical effects on VLF propagation between 3 and 30 kc in arctic regions. The effect of sudden ionospheric disturbances in the form of a sudden enhancement of atmospherics is defined in the 3 to 30 kc frequency band. V...
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ftdtic:AD0256062 2023-05-15T14:47:02+02:00 RESEARCH ON VLF PROPAGATION IN ARCTIC REGIONS. GEOPHYSICAL EFFECTS WHITSON,ARTHUR L. STANFORD RESEARCH INST MENLO PARK CALIF 1961-02 text/html http://www.dtic.mil/docs/citations/AD0256062 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0256062 en eng http://www.dtic.mil/docs/citations/AD0256062 APPROVED FOR PUBLIC RELEASE DTIC AND NTIS *PROPAGATION *RADIO WAVES ATMOSPHERICS EXTRATERRESTRIAL RADIO WAVES EXTREMELY LOW FREQUENCY GEOPHYSICS IONOSPHERIC DISTURBANCES IONOSPHERIC PROPAGATION MEASUREMENT NOISE ANALYZERS POLAR REGIONS SOLAR DISTURBANCES SOLAR FLARES VERY LOW FREQUENCY Text 1961 ftdtic 2016-02-18T15:07:46Z Atmospheric noise data collected in the Arctic were used to determine certain geophysical effects on VLF propagation between 3 and 30 kc in arctic regions. The effect of sudden ionospheric disturbances in the form of a sudden enhancement of atmospherics is defined in the 3 to 30 kc frequency band. Very-low-frequency propagation along the Fairbanks-Thule great-circle path,AS MEASURED BY Fourier analysis of atmospherics, is non-reciprocal but disagrees with non-reciprocal measurements at mid-latitudes. The influence of a polar-cap-absorption event on atmospheric noise is shown, along with variations in atmospheric noise spectrum that are related to some unexplained VLF propagation phenomena. (Author) Text Arctic Defense Technical Information Center: DTIC Technical Reports database Arctic Fairbanks |
institution |
Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
*PROPAGATION *RADIO WAVES ATMOSPHERICS EXTRATERRESTRIAL RADIO WAVES EXTREMELY LOW FREQUENCY GEOPHYSICS IONOSPHERIC DISTURBANCES IONOSPHERIC PROPAGATION MEASUREMENT NOISE ANALYZERS POLAR REGIONS SOLAR DISTURBANCES SOLAR FLARES VERY LOW FREQUENCY |
spellingShingle |
*PROPAGATION *RADIO WAVES ATMOSPHERICS EXTRATERRESTRIAL RADIO WAVES EXTREMELY LOW FREQUENCY GEOPHYSICS IONOSPHERIC DISTURBANCES IONOSPHERIC PROPAGATION MEASUREMENT NOISE ANALYZERS POLAR REGIONS SOLAR DISTURBANCES SOLAR FLARES VERY LOW FREQUENCY WHITSON,ARTHUR L. RESEARCH ON VLF PROPAGATION IN ARCTIC REGIONS. GEOPHYSICAL EFFECTS |
topic_facet |
*PROPAGATION *RADIO WAVES ATMOSPHERICS EXTRATERRESTRIAL RADIO WAVES EXTREMELY LOW FREQUENCY GEOPHYSICS IONOSPHERIC DISTURBANCES IONOSPHERIC PROPAGATION MEASUREMENT NOISE ANALYZERS POLAR REGIONS SOLAR DISTURBANCES SOLAR FLARES VERY LOW FREQUENCY |
description |
Atmospheric noise data collected in the Arctic were used to determine certain geophysical effects on VLF propagation between 3 and 30 kc in arctic regions. The effect of sudden ionospheric disturbances in the form of a sudden enhancement of atmospherics is defined in the 3 to 30 kc frequency band. Very-low-frequency propagation along the Fairbanks-Thule great-circle path,AS MEASURED BY Fourier analysis of atmospherics, is non-reciprocal but disagrees with non-reciprocal measurements at mid-latitudes. The influence of a polar-cap-absorption event on atmospheric noise is shown, along with variations in atmospheric noise spectrum that are related to some unexplained VLF propagation phenomena. (Author) |
author2 |
STANFORD RESEARCH INST MENLO PARK CALIF |
format |
Text |
author |
WHITSON,ARTHUR L. |
author_facet |
WHITSON,ARTHUR L. |
author_sort |
WHITSON,ARTHUR L. |
title |
RESEARCH ON VLF PROPAGATION IN ARCTIC REGIONS. GEOPHYSICAL EFFECTS |
title_short |
RESEARCH ON VLF PROPAGATION IN ARCTIC REGIONS. GEOPHYSICAL EFFECTS |
title_full |
RESEARCH ON VLF PROPAGATION IN ARCTIC REGIONS. GEOPHYSICAL EFFECTS |
title_fullStr |
RESEARCH ON VLF PROPAGATION IN ARCTIC REGIONS. GEOPHYSICAL EFFECTS |
title_full_unstemmed |
RESEARCH ON VLF PROPAGATION IN ARCTIC REGIONS. GEOPHYSICAL EFFECTS |
title_sort |
research on vlf propagation in arctic regions. geophysical effects |
publishDate |
1961 |
url |
http://www.dtic.mil/docs/citations/AD0256062 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0256062 |
geographic |
Arctic Fairbanks |
geographic_facet |
Arctic Fairbanks |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/AD0256062 |
op_rights |
APPROVED FOR PUBLIC RELEASE |
_version_ |
1766318175869206528 |