ULF waves with drift resonance and drift-bounce resonance energy sources as observed in artificially-induced HF radar backscatter
HF radar backscatter which has been artificially-induced by a high power RF facility such as the EISCAT heater at Tromsø has been demonstrated to provide ionospheric electric field data of unprecedented temporal resolution and accuracy. Here such data are used to investigate ULF wave processes obser...
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ftleicesterunfig:oai:figshare.com:article/10090187 2023-05-15T16:04:42+02:00 ULF waves with drift resonance and drift-bounce resonance energy sources as observed in artificially-induced HF radar backscatter Tim K. Yeoman D. M. Wright 2001-01-01T00:00:00Z https://figshare.com/articles/journal_contribution/ULF_waves_with_drift_resonance_and_drift-bounce_resonance_energy_sources_as_observed_in_artificially-induced_HF_radar_backscatter/10090187 unknown 2381/718 https://figshare.com/articles/journal_contribution/ULF_waves_with_drift_resonance_and_drift-bounce_resonance_energy_sources_as_observed_in_artificially-induced_HF_radar_backscatter/10090187 All Rights Reserved Uncategorized IR content Text Journal contribution 2001 ftleicesterunfig 2021-11-11T20:12:28Z HF radar backscatter which has been artificially-induced by a high power RF facility such as the EISCAT heater at Tromsø has been demonstrated to provide ionospheric electric field data of unprecedented temporal resolution and accuracy. Here such data are used to investigate ULF wave processes observed by the CUTLASS HF radars. Within a short period of time during a single four hour experiment three distinct wave types are observed with differing periods, and latitudinal and longitudinal phase evolution. Combining information from the three waves allows them to be divided into those with a large-scale nature, driven externally to the magnetosphere, and those with small azimuthal scale lengths, driven by wave-particle interactions. Furthermore, the nature of the wave-particle interactions for two distinct small-scale waves is revealed, with one wave interpreted as being driven by a drift resonance process and the other by a drift-bounce resonance interaction. Both of these mechanisms with m ≈ -35 and proton energies of 35–45 keV appear to be viable wave energy sources in the postnoon sector. Other Non-Article Part of Journal/Newspaper EISCAT Tromsø University of Leicester: Figshare Tromsø |
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University of Leicester: Figshare |
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Uncategorized IR content |
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Uncategorized IR content Tim K. Yeoman D. M. Wright ULF waves with drift resonance and drift-bounce resonance energy sources as observed in artificially-induced HF radar backscatter |
topic_facet |
Uncategorized IR content |
description |
HF radar backscatter which has been artificially-induced by a high power RF facility such as the EISCAT heater at Tromsø has been demonstrated to provide ionospheric electric field data of unprecedented temporal resolution and accuracy. Here such data are used to investigate ULF wave processes observed by the CUTLASS HF radars. Within a short period of time during a single four hour experiment three distinct wave types are observed with differing periods, and latitudinal and longitudinal phase evolution. Combining information from the three waves allows them to be divided into those with a large-scale nature, driven externally to the magnetosphere, and those with small azimuthal scale lengths, driven by wave-particle interactions. Furthermore, the nature of the wave-particle interactions for two distinct small-scale waves is revealed, with one wave interpreted as being driven by a drift resonance process and the other by a drift-bounce resonance interaction. Both of these mechanisms with m ≈ -35 and proton energies of 35–45 keV appear to be viable wave energy sources in the postnoon sector. |
format |
Other Non-Article Part of Journal/Newspaper |
author |
Tim K. Yeoman D. M. Wright |
author_facet |
Tim K. Yeoman D. M. Wright |
author_sort |
Tim K. Yeoman |
title |
ULF waves with drift resonance and drift-bounce resonance energy sources as observed in artificially-induced HF radar backscatter |
title_short |
ULF waves with drift resonance and drift-bounce resonance energy sources as observed in artificially-induced HF radar backscatter |
title_full |
ULF waves with drift resonance and drift-bounce resonance energy sources as observed in artificially-induced HF radar backscatter |
title_fullStr |
ULF waves with drift resonance and drift-bounce resonance energy sources as observed in artificially-induced HF radar backscatter |
title_full_unstemmed |
ULF waves with drift resonance and drift-bounce resonance energy sources as observed in artificially-induced HF radar backscatter |
title_sort |
ulf waves with drift resonance and drift-bounce resonance energy sources as observed in artificially-induced hf radar backscatter |
publishDate |
2001 |
url |
https://figshare.com/articles/journal_contribution/ULF_waves_with_drift_resonance_and_drift-bounce_resonance_energy_sources_as_observed_in_artificially-induced_HF_radar_backscatter/10090187 |
geographic |
Tromsø |
geographic_facet |
Tromsø |
genre |
EISCAT Tromsø |
genre_facet |
EISCAT Tromsø |
op_relation |
2381/718 https://figshare.com/articles/journal_contribution/ULF_waves_with_drift_resonance_and_drift-bounce_resonance_energy_sources_as_observed_in_artificially-induced_HF_radar_backscatter/10090187 |
op_rights |
All Rights Reserved |
_version_ |
1766400326619889664 |