Rights statement: This is the author’s version of a work that was accepted for publication in Advances in Space Research. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Advances in Space Research, 63, 1, 2018 DOI: 10.1016/j.asr.2018.08.042
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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Multi-instrument observations of large-scale atmospheric gravity waves/traveling ionospheric disturbances associated with enhanced auroral activity over Svalbard
AU - Katamzi-Joseph, Zama T.
AU - Aruliah, Anasuya L.
AU - Oksavik, Kjellmar
AU - Habarulema, John Bosco
AU - Kauristie, Kirsti
AU - Kosch, Michael J.
N1 - This is the author’s version of a work that was accepted for publication in Advances in Space Research. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Advances in Space Research, 63, 1, 2018 DOI: 10.1016/j.asr.2018.08.042
PY - 2019/1/1
Y1 - 2019/1/1
N2 - This study reports on observations of large-scale atmospheric gravity waves/traveling ionospheric disturbances (AGWs/TIDs) using Global Positioning System (GPS) total electron content (TEC) and Fabry-Perot Interferometer’s (FPI’s) intensity of oxygen red line emission at 630 nm measurements over Svalbard on the night of 6 January 2014. TEC large-scale TIDs have primary periods ranging between 29 and 65 minutes and propagate at a mean horizontal velocity of ∼749–761 m/s with azimuth of ∼345°–347° (which corresponds to poleward propagation direction). On the other hand, FPI large-scale AGWs have larger periods of ∼42–142 minutes. These large-scale AGWs/TIDs were linked to enhanced auroral activity identified from co-located all-sky camera and IMAGE magnetometers. Similar periods, speed and poleward propagation were found for the all-sky camera (∼60–97 minutes and ∼823 m/s) and the IMAGE magnetometers (∼32–53 minutes and ∼708 m/s) observations. Joule heating or/and particle precipitation as a result of auroral energy injection were identified as likely generation mechanisms for these disturbances.
AB - This study reports on observations of large-scale atmospheric gravity waves/traveling ionospheric disturbances (AGWs/TIDs) using Global Positioning System (GPS) total electron content (TEC) and Fabry-Perot Interferometer’s (FPI’s) intensity of oxygen red line emission at 630 nm measurements over Svalbard on the night of 6 January 2014. TEC large-scale TIDs have primary periods ranging between 29 and 65 minutes and propagate at a mean horizontal velocity of ∼749–761 m/s with azimuth of ∼345°–347° (which corresponds to poleward propagation direction). On the other hand, FPI large-scale AGWs have larger periods of ∼42–142 minutes. These large-scale AGWs/TIDs were linked to enhanced auroral activity identified from co-located all-sky camera and IMAGE magnetometers. Similar periods, speed and poleward propagation were found for the all-sky camera (∼60–97 minutes and ∼823 m/s) and the IMAGE magnetometers (∼32–53 minutes and ∼708 m/s) observations. Joule heating or/and particle precipitation as a result of auroral energy injection were identified as likely generation mechanisms for these disturbances.
KW - ANGWIN
KW - Arctic polar cap
KW - Atmospheric gravity waves
KW - Aurora
KW - Substorm
KW - Traveling ionospheric disturbances
U2 - 10.1016/j.asr.2018.08.042
DO - 10.1016/j.asr.2018.08.042
M3 - Journal article
VL - 63
SP - 270
EP - 281
JO - Advances in Space Research
JF - Advances in Space Research
SN - 0273-1177
IS - 1
ER -