Statistical relationships between cosmic radio noise absorption and ionospheric electrical conductances in the auroral zone

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ionosphere, conductance, absorption DCS-publications-id, art-869, DCS-publications-credits, iono-fa, iris, DCS-publications-personnel-id, 51, 9, 7, 5

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Statistical relationships between cosmic radio noise absorption and ionospheric electrical conductances in the auroral zone. / Senior, Andrew ; Kavanagh, Andrew J.; Kosch, Mike J. et al.

In: Journal of Geophysical Research, Vol. 112, 2007, p. A11301.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Bibtex

@article{f8d35259e0b1459b816aa884ab209617,

title = "Statistical relationships between cosmic radio noise absorption and ionospheric electrical conductances in the auroral zone",

abstract = "Statistical models expressing the Hall and Pedersen conductances and their ratio as functions of cosmic noise absorption (CNA) are derived for five intervals of magnetic local time. The models are based on simultaneous measurements of electron densities from the EISCAT UHF radar at Tromso (69.6 N, 19.2 E) and absorption from the imaging riometer at Kilpisjarvi (69.1 N, 20.8 E). The Hall conductance and the conductance ratio are found to be rather strongly related to CNA, whereas the Pedersen conductance is less so. The Hall conductance-CNA relationship is strongly dependent on magnetic local time. These results are interpreted as being the consequence of the particular sensitivity of CNA to the typical energy of electron precipitation, the latter changing as a function of local time as the electrons drift around the Earth. The models are compared to a previous study which did not use simultaneous measurements or take into account the local time dependence. There is a significant difference between that study and the results presented here.",

keywords = "ionosphere, conductance, absorption DCS-publications-id, art-869, DCS-publications-credits, iono-fa, iris, DCS-publications-personnel-id, 51, 9, 7, 5",

author = "Andrew Senior and Kavanagh, {Andrew J.} and Kosch, {Mike J.} and Farideh Honary",

note = "Copyright (2007) American Geophysical Union. Further reproduction or electronic distribution is not permitted",

year = "2007",

doi = "10.1029/2007JA012519",

language = "English",

volume = "112",

pages = "A11301",

journal = "Journal of Geophysical Research",

issn = "0148-0227",

publisher = "American Geophysical Union",

}

RIS

TY - JOUR

T1 - Statistical relationships between cosmic radio noise absorption and ionospheric electrical conductances in the auroral zone

AU - Senior, Andrew

AU - Kavanagh, Andrew J.

AU - Kosch, Mike J.

AU - Honary, Farideh

N1 - Copyright (2007) American Geophysical Union. Further reproduction or electronic distribution is not permitted

PY - 2007

Y1 - 2007

N2 - Statistical models expressing the Hall and Pedersen conductances and their ratio as functions of cosmic noise absorption (CNA) are derived for five intervals of magnetic local time. The models are based on simultaneous measurements of electron densities from the EISCAT UHF radar at Tromso (69.6 N, 19.2 E) and absorption from the imaging riometer at Kilpisjarvi (69.1 N, 20.8 E). The Hall conductance and the conductance ratio are found to be rather strongly related to CNA, whereas the Pedersen conductance is less so. The Hall conductance-CNA relationship is strongly dependent on magnetic local time. These results are interpreted as being the consequence of the particular sensitivity of CNA to the typical energy of electron precipitation, the latter changing as a function of local time as the electrons drift around the Earth. The models are compared to a previous study which did not use simultaneous measurements or take into account the local time dependence. There is a significant difference between that study and the results presented here.

AB - Statistical models expressing the Hall and Pedersen conductances and their ratio as functions of cosmic noise absorption (CNA) are derived for five intervals of magnetic local time. The models are based on simultaneous measurements of electron densities from the EISCAT UHF radar at Tromso (69.6 N, 19.2 E) and absorption from the imaging riometer at Kilpisjarvi (69.1 N, 20.8 E). The Hall conductance and the conductance ratio are found to be rather strongly related to CNA, whereas the Pedersen conductance is less so. The Hall conductance-CNA relationship is strongly dependent on magnetic local time. These results are interpreted as being the consequence of the particular sensitivity of CNA to the typical energy of electron precipitation, the latter changing as a function of local time as the electrons drift around the Earth. The models are compared to a previous study which did not use simultaneous measurements or take into account the local time dependence. There is a significant difference between that study and the results presented here.

KW - ionosphere

KW - conductance

KW - absorption DCS-publications-id

KW - art-869

KW - DCS-publications-credits

KW - iono-fa

KW - iris

KW - DCS-publications-personnel-id

KW - 51

KW - 9

KW - 7

KW - 5

U2 - 10.1029/2007JA012519

DO - 10.1029/2007JA012519

M3 - Journal article

VL - 112

SP - A11301

JO - Journal of Geophysical Research

JF - Journal of Geophysical Research

SN - 0148-0227

ER -

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