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Radar and Satellite Investigations of Equatorial Evening Vertical Drifts and Spread F

Smith, J. M.; Rodrigues, Fabiano S.; de Paula, E. R. (Copernicus Gesellschaft Mbh, 2015-11-11)

We analyzed pre-midnight equatorial F region observations made by the 30 MHz coherent backscatter radar of Sao Luis, Brazil between August 2010 and February 2012. These measurements were processed, and used to create monthly ...

Effects of Electric Field and Neutral Wind on the Asymmetry of Equatorial Ionization Anomaly

Khadka, S. M.; Valladares, Cesar E.; Sheehan, R.; Gerrard, A. J.

The zonal electric field and the meridional neutral wind are the principal drivers that define the geometry and characteristics of the equatorial ionization anomaly (EIA). Here we present the response of the EIA to the ...

Study of the Equatorial and Low-Latitude Electrodynamic and Ionospheric Disturbances during the 22–23 June 2015 Geomagnetic Storm Using Ground-Based and Spaceborne Techniques

Astafyeva, E.; Zakharenkova, I.; Hozumi, K.; Alken, P.; Coïsson, P.; Hairston, Marc R.; Coley, William R.

We use a set of ground-based instruments (Global Positioning System receivers, ionosondes, magnetometers) along with data of multiple satellite missions (Swarm, C/NOFS, DMSP, GUVI) to analyze the equatorial and low-latitude ...

Observations of the Generation of Eastward Equatorial Electric Fields near Dawn

Kelley, M. C.; Rodrigues, Fabiano S.; Pfaff, R. F.; Klenzing, J. (Copernicus Gesellschaft Mbh, 2014-09-19)

We report and discuss interesting observations of the variability of electric fields and ionospheric densities near sunrise in the equatorial ionosphere made by instruments onboard the Communications/Navigation Outage ...

Duskside Enhancement of Equatorial Zonal Electric Field Response to Convection Electric Fields During the St. Patrick's Day Storm on 17 March 2015

Tulasi Ram, S.; Yokoyama, T.; Otsuka, Y.; Shiokawa, K.; Sripathi, S.; Veenadhari, B.; Heelis, Roderick A.; Ajith, K. K.; Gowtam, V. S.; Gurubaran, S.; Supnithi, P.; Le Huy, M. (Blackwell Publishing Ltd, 2016-01-11)

The equatorial zonal electric field responses to prompt penetration of eastward convection electric fields (PPEF) were compared at closely spaced longitudinal intervals at dusk to premidnight sectors during the intense ...

An Auroral Boundary-Oriented Model of Subauroral Polarization Streams (SAPS)

Landry, Russell G.; Anderson, Phillip C.

An empirical model of subauroral polarization stream (SAPS) electric fields has been developed using measurements of ion drifts and particle precipitation made by the Defense Meteorological Satellite Program from 1987 to ...