Salient Midlatitude Ionosphere?Thermosphere Disturbances Associated With SAPS During a Minor but Geo?Effective Storm at Deep Solar Minimum
نویسندگان
چکیده
This work conducts a focused study of subauroral ion-neutral coupling processes and midlatitude ionospheric/thermospheric responses in North America during minor but quite geo-effective storm on September 27–28, 2019 under deep solar minimum conditions. Several prominent storm-time disturbances associated electrodynamics/dynamics were identified comprehensively analyzed using Millstone Hill Poker Flat incoherent scatter radar measurements, Fabry-Perot interferometer data, total electron content data from Global Navigation Satellite System observations, thermospheric composition O/N2 the Global-scale Observations Limb Disk mission. Despite conditions, this produced several dynamic features, particular (a) Intense polarization stream (SAPS) 1,000 m/s, overlapping with deepened main trough structure. (b) An enhanced westward wind 230 m/s significant poleward surge 85 occurred post-SAPS period. (c) Large-scale traveling ionospheric (TIDs) generated propagated equatorward across mid-latitudes phase. TID characteristics significantly affected by SAPS, evolving into divergent propagation patterns. (d) SAPS was situated edge considerable storm-enhanced density (e) The ionosphere thermosphere exhibited prolonged positive effect phase beginning recovery phase, 5–10 TECU increase 10%–30% enhancement for 12 h. followed negative 20%–40% decrease. Results show that intervals can produce substantial mid-latitude dynamics low flux
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ژورنال
عنوان ژورنال: Journal Of Geophysical Research: Space Physics
سال: 2021
ISSN: ['2169-9402', '2169-9380']
DOI: https://doi.org/10.1029/2021ja029509