A Statistical Study on The Local Time Dependence of Equatorial Spread F (ESF) Irregularities and Their Relation to Low‐Latitude Es Layers Under Geomagnetic Storms

2020 ◽  
Vol 125 (1) ◽  
Author(s):  
Ram Singh ◽  
S. Sripathi
Keyword(s):  
Time Dependence ◽  
Local Time ◽  
Statistical Study ◽  
Geomagnetic Storms ◽  
Low Latitude ◽  
Equatorial Spread F ◽  
Spread F ◽  
Local Time Dependence

scholarly journals Local time dependence of the frequency of Pi2 waves simultaneously observed at 5 low-latitude stations

2003 ◽  
Vol 55 (10) ◽  
pp. 601-612 ◽  
Author(s):  
Desheng Han ◽  
Toshihiko Iyemori ◽  
Yufen Gao ◽  
Yasuharu Sano ◽  
Fuxi Yang ◽  
...  
Keyword(s):  
Time Dependence ◽  
Local Time ◽  
Low Latitude ◽  
Local Time Dependence

Local Time Dependence of Jupiter’s Polar Auroral Emissions Observed by Juno UVS

2021 ◽  
Author(s):  
Thomas Greathouse ◽  
Randy Gladstone ◽  
Maarten Versteeg ◽  
Vincent Hue ◽  
Joshua Kammer ◽  
...  
Keyword(s):  
Time Dependence ◽  
Local Time ◽  
Auroral Emissions ◽  
Local Time Dependence

scholarly journals Radar and satellite investigations of equatorial evening vertical drifts and spread <i>F</i>

2015 ◽  
Vol 33 (11) ◽  
pp. 1403-1412 ◽  
Author(s):  
J. M. Smith ◽  
F. S. Rodrigues ◽  
E. R. de Paula
Keyword(s):  
Local Time ◽  
Empirical Model ◽  
Sufficient Condition ◽  
Satellite Measurements ◽  
Equatorial Spread F ◽  
Annual Variability ◽  
F Region ◽  
Plasma Drifts ◽  
Spread F ◽  
Coherent Backscatter

Abstract. We analyzed pre-midnight equatorial F region observations made by the 30 MHz coherent backscatter radar of São Luis, Brazil between August 2010 and February 2012. These measurements were processed, and used to create monthly maps of the echo occurrence as a function of local time and height. The maps show the inter-annual variability associated with equatorial spread F (ESF) occurrence in the Brazilian longitude sector. We also constructed monthly curves of the evening vertical drifts, for the Brazilian sector, using measurements by the ion velocity meter (IVM) onboard the C/NOFS satellite. The IVM evening drifts show a good overall agreement with the Scherliess and Fejer (1999) empirical model. Measured and model drifts show the development of the pre-reversal enhancement (PRE) of the vertical plasma drifts during ESF season. Using joint radar and satellite measurements, we found that evening (18:00–18:30 LT) mean non-negative drifts provide a necessary but not sufficient condition for the occurrence of topside ESF echoes. Evening downward (negative) drifts preceded the absence of topside ESF irregularities.

Infrared observations of Saturn's rings by Cassini CIRS : Phase angle and local time dependence

2008 ◽  
Vol 56 (1) ◽  
pp. 117-133 ◽  
Author(s):  
Cedric Leyrat ◽  
Linda J. Spilker ◽  
Nicolas Altobelli ◽  
Stuart Pilorz ◽  
Cecile Ferrari
Keyword(s):  
Time Dependence ◽  
Local Time ◽  
Phase Angle ◽  
Infrared Observations ◽  
Saturn’S Rings ◽  
Saturn's Rings ◽  
Local Time Dependence

scholarly journals Local time dependence of turbulent magnetic fields in Saturn's magnetodisc

2017 ◽  
Vol 122 (4) ◽  
pp. 3972-3984 ◽  
Author(s):  
V. Kaminker ◽  
P. A. Delamere ◽  
C. S. Ng ◽  
T. Dennis ◽  
A. Otto ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Time Dependence ◽  
Local Time ◽  
Local Time Dependence

Magnetic latitude and local time dependence of the amplitude of geomagnetic sudden commencements

2009 ◽  
Vol 114 (A4) ◽  
pp. n/a-n/a ◽  
Author(s):  
Atsuki Shinbori ◽  
Yuji Tsuji ◽  
Takashi Kikuchi ◽  
Tohru Araki ◽  
Shinichi Watari
Keyword(s):  
Time Dependence ◽  
Local Time ◽  
Magnetic Latitude ◽  
Sudden Commencements ◽  
Local Time Dependence
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