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Found 3 entries in the Bibliography.
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Direct observational evidence for disturbance dynamo on the daytime low-latitude ionosphere: A case study based on the 28 June 2013 space weather event
A case of the westward disturbance dynamo (DD) electric field, influencing the daytime equatorial and low-latitude ionosphere, during a geomagnetic storm that occurred on 28\textendash29 June 2013 is presented. The GPS total electron content (TEC) observations from a network of stations in the Indian equatorial, low and middle latitude regions along with the radio beacon TEC, ionosonde, and magnetic field observations are used to study the storm time behavior of the ionosphere. Negative ionospheric storm effects were seen ...
Thampi, Smitha; Shreedevi, P.; Choudhary, R.; Pant, Tarun; Chakrabarty, D.; Sunda, S.; Mukherjee, S.; Bhardwaj, Anil;
Published by: Journal of Geophysical Research: Space Physics Published on: 09/2016
YEAR: 2016   DOI: 10.1002/2016JA023037
Effects of prolonged southward interplanetary magnetic field on low-latitude ionospheric electron density
The present work describes the low-latitude ionospheric variability during an unusually prolonged (~33 h) geomagnetically disturbed condition that prevailed during 15\textendash16 July 2012. The low-latitude electron density in summer hemisphere, investigated using ground- and satellite-based observations, responded to this by generating strong negative ionospheric storm on 16 July. The maximum electron density on 16 July over Indian low latitudes was reduced by more than 50\% compared to that on a geomagnetically quiet d ...
Bagiya, Mala; Hazarika, Rumajyoti; Laskar, Fazlul; Sunda, Surendra; Gurubaran, S.; Chakrabarty, D.; Bhuyan, P.; Sridharan, R.; Veenadhari, B.; Pallamraju, D.;
Published by: Journal of Geophysical Research: Space Physics Published on: 07/2014
YEAR: 2014   DOI: 10.1002/2014JA020156
low-latitude ionosphere; neutral winds; prolonged southward IMF Bz; thermospheric neutral composition
Storm time spatial variations in TEC during moderate geomagnetic storms in extremely low solar activity conditions (2007--2009) over Indian region
The total electron content (TEC) measurements from a network of GPS receivers were analyzed to investigate the storm time spatial response of ionosphere over the Indian longitude sector. The GPS receivers from the GPS Aided Geo Augmented Navigation (GAGAN) network which are uniquely located around the \~77\textdegreeE longitude are used in the present study so as to get the complete latitudinal coverage from the magnetic equator to low mid-latitude region. We have selected the most intense storms but of moderate intensity ...
Sunda, Surendra; Vyas, B.M.; Khekale, P.V.;
Published by: Advances in Space Research Published on: 07/2013
YEAR: 2013   DOI: 10.1016/j.asr.2013.03.006
Electrodynamics; Equatorial and low-latitude; geomagnetic storm; Total electron content (TEC)