Determination of the parameters of travelling ionospheric disturbances in the high-latitude ionosphere using CUTLASS coherent scatter radars

T. J.T. Karhunen; T. R. Robinson; N. F. Arnold; M. Lester

doi:10.1016/j.jastp.2005.03.021

Determination of the parameters of travelling ionospheric disturbances in the high-latitude ionosphere using CUTLASS coherent scatter radars

T. J.T. Karhunen, T. R. Robinson, N. F. Arnold, M. Lester

Research output: Journal Publication › Article › peer-review

16 Citations (Scopus)

Abstract

A multi-frequency experiment at thermospheric heights using skip observations (METSO) has been designed for the co-operative UK twin located auroral sounding system (CUTLASS) radars for studying travelling ionospheric disturbances (TIDs). This mode uses both frequency and azimuthal scanning to build a two-dimensional phase map of the wave field independently in the two fields of view. On February 21, 2004, a superposition of three disturbances was observed and their parameters have been determined by a two-dimensional least-squares fitting method. Two of the disturbances were found to be consistent with models of TIDs caused by acoustic gravity waves (AGWs) from a point source: a medium-scale Earth-reflected mode and a large-scale direct mode. The propagation directions of the third disturbance, on the other hand, were found to differ in the two fields of view in a way inconsistent with a single point source, but rather a longitudinally extended one. All the waves were found to originate north of the radars.

Original language	English
Pages (from-to)	558-567
Number of pages	10
Journal	Journal of Atmospheric and Solar-Terrestrial Physics
Volume	68
Issue number	3-5
DOIs	https://doi.org/10.1016/j.jastp.2005.03.021
Publication status	Published - Feb 2006
Externally published	Yes

Keywords

Instruments and techniques)
Ionosphere (Ionosphere-atmosphere interactions
Ionospheric disturbances
Radio science (Ionospheric propagation)
Wave propagation

ASJC Scopus subject areas

Geophysics
Atmospheric Science
Space and Planetary Science

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10.1016/j.jastp.2005.03.021

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@article{d6c015e361be41ad828962d6dd0a5af4,

title = "Determination of the parameters of travelling ionospheric disturbances in the high-latitude ionosphere using CUTLASS coherent scatter radars",

abstract = "A multi-frequency experiment at thermospheric heights using skip observations (METSO) has been designed for the co-operative UK twin located auroral sounding system (CUTLASS) radars for studying travelling ionospheric disturbances (TIDs). This mode uses both frequency and azimuthal scanning to build a two-dimensional phase map of the wave field independently in the two fields of view. On February 21, 2004, a superposition of three disturbances was observed and their parameters have been determined by a two-dimensional least-squares fitting method. Two of the disturbances were found to be consistent with models of TIDs caused by acoustic gravity waves (AGWs) from a point source: a medium-scale Earth-reflected mode and a large-scale direct mode. The propagation directions of the third disturbance, on the other hand, were found to differ in the two fields of view in a way inconsistent with a single point source, but rather a longitudinally extended one. All the waves were found to originate north of the radars.",

keywords = "Instruments and techniques), Ionosphere (Ionosphere-atmosphere interactions, Ionospheric disturbances, Radio science (Ionospheric propagation), Wave propagation",

author = "Karhunen, {T. J.T.} and Robinson, {T. R.} and Arnold, {N. F.} and M. Lester",

note = "Funding Information: The CUTLASS HF radars are deployed and operated by the University of Leicester, and are jointly funded by the UK Particle Physics and Astronomy Research Council (Grant no. PPA/R/R/1997/00256), the Finnish Meteorological Institute and the Swedish Institute for Space Physics. Funding Information: The data from the Troms{\o} dynasonde was made available by the EISCAT Scientific Association funded collaboratively by research councils from Finland (SA), France (CNRS), Federal Republic of Germany (MPG), Japan (NIPR), Norway (NAVF), Sweden (NFR) and the United Kingdom (PPARC). The analysis software used is maintained by the EISCAT group at the Rutherford Appleton Laboratory. Funding Information: T.J.T.K. was supported by a University of Leicester Research Studentship. N.F.A. was supported on a PPARC Advanced Fellowship. M.L. was supported by the Institute of Advanced Study, La Trobe University, during a part of the preparation of this manuscript.",

year = "2006",

month = feb,

doi = "10.1016/j.jastp.2005.03.021",

language = "English",

volume = "68",

pages = "558--567",

journal = "Journal of Atmospheric and Solar-Terrestrial Physics",

issn = "1364-6826",

publisher = "Elsevier Ltd.",

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T1 - Determination of the parameters of travelling ionospheric disturbances in the high-latitude ionosphere using CUTLASS coherent scatter radars

AU - Karhunen, T. J.T.

AU - Robinson, T. R.

AU - Arnold, N. F.

AU - Lester, M.

N1 - Funding Information: The CUTLASS HF radars are deployed and operated by the University of Leicester, and are jointly funded by the UK Particle Physics and Astronomy Research Council (Grant no. PPA/R/R/1997/00256), the Finnish Meteorological Institute and the Swedish Institute for Space Physics. Funding Information: The data from the Tromsø dynasonde was made available by the EISCAT Scientific Association funded collaboratively by research councils from Finland (SA), France (CNRS), Federal Republic of Germany (MPG), Japan (NIPR), Norway (NAVF), Sweden (NFR) and the United Kingdom (PPARC). The analysis software used is maintained by the EISCAT group at the Rutherford Appleton Laboratory. Funding Information: T.J.T.K. was supported by a University of Leicester Research Studentship. N.F.A. was supported on a PPARC Advanced Fellowship. M.L. was supported by the Institute of Advanced Study, La Trobe University, during a part of the preparation of this manuscript.

PY - 2006/2

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N2 - A multi-frequency experiment at thermospheric heights using skip observations (METSO) has been designed for the co-operative UK twin located auroral sounding system (CUTLASS) radars for studying travelling ionospheric disturbances (TIDs). This mode uses both frequency and azimuthal scanning to build a two-dimensional phase map of the wave field independently in the two fields of view. On February 21, 2004, a superposition of three disturbances was observed and their parameters have been determined by a two-dimensional least-squares fitting method. Two of the disturbances were found to be consistent with models of TIDs caused by acoustic gravity waves (AGWs) from a point source: a medium-scale Earth-reflected mode and a large-scale direct mode. The propagation directions of the third disturbance, on the other hand, were found to differ in the two fields of view in a way inconsistent with a single point source, but rather a longitudinally extended one. All the waves were found to originate north of the radars.

AB - A multi-frequency experiment at thermospheric heights using skip observations (METSO) has been designed for the co-operative UK twin located auroral sounding system (CUTLASS) radars for studying travelling ionospheric disturbances (TIDs). This mode uses both frequency and azimuthal scanning to build a two-dimensional phase map of the wave field independently in the two fields of view. On February 21, 2004, a superposition of three disturbances was observed and their parameters have been determined by a two-dimensional least-squares fitting method. Two of the disturbances were found to be consistent with models of TIDs caused by acoustic gravity waves (AGWs) from a point source: a medium-scale Earth-reflected mode and a large-scale direct mode. The propagation directions of the third disturbance, on the other hand, were found to differ in the two fields of view in a way inconsistent with a single point source, but rather a longitudinally extended one. All the waves were found to originate north of the radars.

KW - Instruments and techniques)

KW - Ionosphere (Ionosphere-atmosphere interactions

KW - Ionospheric disturbances

KW - Radio science (Ionospheric propagation)

KW - Wave propagation

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AN - SCOPUS:32144460651

SN - 1364-6826

VL - 68

SP - 558

EP - 567

JO - Journal of Atmospheric and Solar-Terrestrial Physics

JF - Journal of Atmospheric and Solar-Terrestrial Physics

IS - 3-5

ER -

Determination of the parameters of travelling ionospheric disturbances in the high-latitude ionosphere using CUTLASS coherent scatter radars

Abstract

Keywords

ASJC Scopus subject areas

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