TY - JOUR
T1 - Characteristics of counter-Sq SFE (SFE) at the dip equator CPMN stations A05306
AU - Yamazaki, Y.
AU - Yumoto, K.
AU - Yoshikawa, A.
AU - Watari, S.
AU - Utada, H.
N1 - Copyright:
Copyright 2015 Elsevier B.V., All rights reserved.
PY - 2009/5/1
Y1 - 2009/5/1
N2 - The solar flare effect (SFE) at dip equatorial latitudes sometimes shows the counter-Sq variation around local noon. In this paper, we refer to this type of SFE as SFE*. Observations obtained by the Circum-pan Pacific Magnetometer Network (CPMN) reveal some previously unknown characteristics of SFE*. Some of these features are the following: (1) the counter-Sq SFE variation is observed in limited longitude (local time) and latitude sectors (i.e., LT ≈ 1030-1300, \DipLat.\ ≲, 1.5°) (2) outside this limited region, the amplitude of SFE(Z/) and preflare S q(H) have a linear relationship (3) SFE* is observed during the significant depression of the horizontal magnetic field at dip equatorial latitudes, which indicates the presence of westward electric fields whose origin remains to be understood.
AB - The solar flare effect (SFE) at dip equatorial latitudes sometimes shows the counter-Sq variation around local noon. In this paper, we refer to this type of SFE as SFE*. Observations obtained by the Circum-pan Pacific Magnetometer Network (CPMN) reveal some previously unknown characteristics of SFE*. Some of these features are the following: (1) the counter-Sq SFE variation is observed in limited longitude (local time) and latitude sectors (i.e., LT ≈ 1030-1300, \DipLat.\ ≲, 1.5°) (2) outside this limited region, the amplitude of SFE(Z/) and preflare S q(H) have a linear relationship (3) SFE* is observed during the significant depression of the horizontal magnetic field at dip equatorial latitudes, which indicates the presence of westward electric fields whose origin remains to be understood.
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U2 - 10.1029/2009JA014124
DO - 10.1029/2009JA014124
M3 - Article
AN - SCOPUS:68749101002
SN - 2169-9380
VL - 114
JO - Journal of Geophysical Research: Space Physics
JF - Journal of Geophysical Research: Space Physics
IS - 5
M1 - A05306
ER -