TY - JOUR
T1 - Nighttime Pc3 pulsations
T2 - MM100 and MAGDAS observations
AU - Yagova, Nadezda V.
AU - Heilig, Balazs
AU - Pilipenko, Vyacheslav A.
AU - Yoshikawa, Akimasa
AU - Nosikova, Nataliya S.
AU - Yumoto, Kiyohumi
AU - Reda, Jan
N1 - Funding Information:
We thank CDAWEB ( http://cdaweb.gsfc.nasa.gov/istp_public ) for ACE data on solar wind and IMF. AE index is provided by Data Center for Geomagnetism in Kyoto ( http://wdc.kugi.kyoto-u.ac.jp/index.html ). This work was supported by RFBR Grant 15-55-45064 (NY, VP, NN) and by MEXT/JSPS KAKENHI Grant 15H05815 (AY, KY).
Publisher Copyright:
© The Author(s) 2017.
PY - 2017/12/1
Y1 - 2017/12/1
N2 - In this paper, we present a statistical and case analysis of nighttime Pc3 pulsations observed from middle to equatorial latitudes during the year 2003. We found two groups of nighttime Pc3 pulsations. Pc3s of the first group are in fact the nightside counterpart of morning Pc3 pulsations with large azimuthal scales slowly attenuating toward midnight. Such night signatures of morning Pc3 waves are observed during the periods of fast solar wind (V > 500 km/s). The second type is the locally generated night Pc3 pulsations. They can be observed under moderate solar wind velocities. Maximal occurrence rates and amplitudes for these pulsations are recorded at middle geomagnetic latitudes near the local magnetic midnight. Probably, they are associated with auroral activations or local non-substorm bursty processes.
AB - In this paper, we present a statistical and case analysis of nighttime Pc3 pulsations observed from middle to equatorial latitudes during the year 2003. We found two groups of nighttime Pc3 pulsations. Pc3s of the first group are in fact the nightside counterpart of morning Pc3 pulsations with large azimuthal scales slowly attenuating toward midnight. Such night signatures of morning Pc3 waves are observed during the periods of fast solar wind (V > 500 km/s). The second type is the locally generated night Pc3 pulsations. They can be observed under moderate solar wind velocities. Maximal occurrence rates and amplitudes for these pulsations are recorded at middle geomagnetic latitudes near the local magnetic midnight. Probably, they are associated with auroral activations or local non-substorm bursty processes.
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U2 - 10.1186/s40623-017-0647-x
DO - 10.1186/s40623-017-0647-x
M3 - Article
AN - SCOPUS:85018954625
SN - 1343-8832
VL - 69
JO - earth, planets and space
JF - earth, planets and space
IS - 1
M1 - 61
ER -