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Post-Storm Middle and Low-Latitude Ionospheric Electric Fields Effects
(Springer, 2016-12-05)
The Earth’s upper atmosphere and ionosphere undergoes large and complex perturbations during and after geomagnetic storms. Thermospheric winds driven by enhanced energy and momentum due to geomagnetic activity generate ...
Satellite traces, range spread-F occurrence, and gravity wave propagation at the southern anomaly crest
(Copernicus Publications, 2010-05)
Abstract. Range spread-F (RSF) and occurrence of "satellite" traces prior to RSF onset were studied at the southern peak of the ionospheric equatorial anomaly (EA). Ionograms recorded in September 2007 at the new ionospheric ...
Dynamical and magnetic field time constants for Titan's ionosphere: Empirical estimates and comparisons with Venus
(American Geophysical Union, 2010-10)
Plasma in Titan´s ionosphere flows in response to forcing from thermal pressure gradients, magnetic forces, gravity, and ion-neutral collisions. This paper takes an empirical approach to the ionospheric dynamics by using ...
Electron density and temperature measurements in the cold plasma environment of Titan: Implications for atmospheric escape
(American Geophysical Union, 2010-10)
We present electron temperature and density measurements of Titan's cold ionospheric plasma from the Langmuir probe instrument on Cassini from 52 flybys. An expression of the density as a function of temperature is presented ...
Stormtime dynamics of the global thermosphere and equatorial ionosphere
(European Geosciences Union, 2009-05-05)
During magnetic storms the development of equatorial plasma bubbles (EPBs) and distributions of thermospheric densities are strongly influenced by the histories of imposed magnetospheric electric (εM) fields. Periods of ...
Comparison of zonal neutral winds with equatorial plasma bubble and plasma drift velocities
(American Geophysical Union, 2013-03-20)
A one-year dataset spanning March 2011-March 2012 of coincident observations of night time thermospheric zonal neutral winds, equatorial plasma bubble (EPB) velocities, and zonal plasma drifts are used to examine the ...
Unexpected connections between the stratosphere and ionosphere
(American Geophysical Union, 2010-05)
The coupling of the ionosphere to processes from below remains an elusive and difficult problem, as rapidly changing external drivers from above mask variations related to lower atmospheric sources. Here we use superposition ...
Unusual nighttime impulsive foF2 enhancement below the southern anomaly crest under geomagnetically quiet conditions
(American Geophysical Union, 2011-12)
An unusual nighttime impulsive electron density enhancement was observed on 6 March 2010 over a wide region of South America, below the southern crest of the equatorial anomaly, under low solar activity and quiet geomagnetic ...
Ionospheric effects of sudden stratospheric warming during moderate-to-high solar activity: Case study of January 2013
(American Geophysical Union, 2013-09-24)
A major sudden stratospheric warming (SSW) occurred in January 2013 during moderate-to-high solar activity conditions. Observations during the winter of 2012/2013 reveal strong ionospheric disturbances associated with this ...
Consequences of a Solar Wind Stream Interaction Region on the Low Latitude Ionosphere: Event of 7 October 2015
(Springer, 2020-12)
In this article, we present a study of the perturbations occurring in the Earth’s environment on 7 October 2015. We use a multi-instrument approach, including space and ground observations. In particular, we study the ...