First results from ground-based daytime optical investigation of the development of the equatorial ionization anomaly [PDF]
Annales Geophysicae, 1996 A meridional scanning OI 630.0-nm dayglow photometer was operated from Ahmedabad (17.2°N dip lat.) scanning a region towards the south in the upper atmosphere extending over ~5° in latitude from 10.2°N to 15.2°N dip latitude.
D. Pallam Raju +3 more
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Journal of Geophysical Research: Space Physics, 2009 During the evening prereversal enhancement of the zonal electric field (EPRE) that begins around 1700 LT when the F region neutral winds turn eastward, as assumed here, and continues till the postsunset zonal electric field reversal time, an overall positive feedback is shown to occur between the eastward electric field in the lower side of the flux ...
S. Prakash +2 more
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Geophysical Research LettersUsing NASA's Global‐scale Observations of the Limb and Disk (GOLD) imager, we report nightside ionospheric changes during the G5 super geomagnetic storm of 10 and 11 May 2024.
Deepak Kumar Karan +7 more
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Geophysical Monograph Series, Page 169-190., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Nasrrddine Youbi +9 more
wiley +1 more source
Ionospheric irregularities: The role of the equatorial ionization anomaly [PDF]
Radio Science, 1997 The availability of similar ionosondes at four locations in India covering the regions from the equator to the northern crest of the equatorial ionization anomaly (EIA) has provided a unique opportunity to study the role of the EIA and related processes in the occurrence of spread F.
P. V. S. Rama Rao +2 more
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Mapping Ethiopian ionosphere using ground-based GPS TEC
Cogent Engineering, 2022 The objective of this paper is to map regional ionospheric Total Electron Content (vTEC) using Global Positioning System (GPS) data from 10 different GPS receiver sites in Ethiopia, to capture ionospheric phenomena (such as storm effect, Equatorial ...
Seydie Mebrie, Tsegaye Kassa
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Impact of sudden stratospheric warmings on equatorial ionization anomaly [PDF]
Journal of Geophysical Research: Space Physics, 2010 We investigate the ionospheric response to several stratospheric sudden warming events which occurred in Northern Hemisphere winters of 2008 and 2009 during solar minimum conditions. We use GPS total electron content data in a broad latitudinal region at ±40° geographic latitude and a single longitude, 75°W.
L. P. Goncharenko +3 more
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Analysis of Ionospheric Anomalies before the Tonga Volcanic Eruption on 15 January 2022
Remote Sensing, 2023 In this paper, GNSS stations’ observational data, global ionospheric maps (GIM) and the electron density of FORMOSAT-7/COSMIC-2 occultation are used to study ionospheric anomalies before the submarine volcanic eruption of Hunga Tonga–Hunga Ha’apai on 15 ...
Jiandi Feng +4 more
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Ionospheric plasma caves under the equatorial ionization anomaly [PDF]
Journal of Geophysical Research: Space Physics, 2012 This paper reports the existence of plasma caves, minima in the electron density located at 5–10° to the magnetic equator, in the bottomside ionosphere based on electron densities simulations from the International Reference Ionosphere (IRI‐2007) and clear evidences given by plasma density and drift measurements of the Dynamic Explorer 2 (DE 2 ...
I. T. Lee +5 more
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Observations of GPS ionospheric scintillations over Wuhan during geomagnetic storms [PDF]
Annales Geophysicae, 2006 During the two geomagnetic storms which occurred on 1 October 2002 and 22 January 2004, the strong ionospheric scintillations of the GPS L1 band were observed at Wuhan station (30.6° N, 114.4° E, 45.8° Dip), which is ...
G. Li +7 more
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