Results 101 to 110 of about 5,760 (194)

On the Origin of the Slow Speed Solar Wind: Helium Abundance Variations

, 2012
The First Ionization Potential (FIP) effect is the by now well known enhancement in abundance over photospheric values of Fe and other elements with first ionization potential below about 10 eV observed in the solar corona and slow speed solar wind.
Antiochos, Avrett, Bourouaine, Bruno, Bryans, Byhring, Campos, Cara E. Rakowski, Cranmer, Cranmer, Feldman, Heggland, J. Martin Laming, Kasper, Kigure, Killie, Ko, Laming, Laming, Laming, Laming, Laming, Litwin, Longcope, Noci, Ofman, Ofman, Parker, Parker, Rappazzo, Rappazzo, Ruderman, Schwadron, Sturrock, Verdini, Wang, Wang, Wood   +37 more
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Magnetic shell enhancements during magnetic disturbances [PDF]

, 1965
Magnetic shell enhancements during magnetic field disturbances from Langmuir probe observations of electron density on Ariel I ...
Henderson, C. L., Willmore, A. P.
core   +1 more source

A Rare Simultaneous Detection of a Mid‐Latitude Plasma Depleted Structure in O(1D) 630.0 and O(1S) 557.7 nm All‐Sky Airglow Images on a Geomagnetically Quiet Night

Geophysical Research Letters
This letter reports first simultaneous detection of F‐region plasma‐depleted structure in O(1D) 630.0 and O(1S) 557.7 nm airglow images on a geomagnetically quiet‐night (Ap = 3) of 26 June 2021 from mid‐latitude station (Hanle, India) due to enhanced ...
D. Patgiri, R. Rathi, V. Yadav, D. Chakrabarty, M. V. Sunil Krishna, S. Kannaujiya, P. Pavan Chaitanya, A. K. Patra, Jann‐Yenq Liu, S. Sarkhel   +9 more
doaj   +1 more source

CIR-Driven Geomagnetic Storm and High-Intensity Long-Duration Continuous AE Activity (HILDCAA) Event: Effects on Brazilian Equatorial and Low-Latitude Ionosphere—Observations and Modeling

Atmosphere
This paper investigates the effects of a Corotating Interaction Region (CIR)/High-Speed Stream (HSS)-driven geomagnetic storm from 13 to 23 October 2003, preceding the well-known Halloween storm.
Samuel Abaidoo, Virginia Klausner, Claudia Maria Nicoli Candido, Valdir Gil Pillat, Stella Pires de Moraes Santos Ribeiro Godoy, Fabio Becker-Guedes, Josiely Aparecida do Espírito Santo Toledo, Laura Luiz Trigo   +7 more
doaj   +1 more source

Magnetic Scaling Laws for the Atmospheres of Hot Giant Exoplanets

, 2011
We present scaling laws for advection, radiation, magnetic drag and ohmic dissipation in the atmospheres of hot giant exoplanets. In the limit of weak thermal ionization, ohmic dissipation increases with the planetary equilibrium temperature (T_eq ...
Agol, Baraffe, Batygin, Batygin, Burrows, Burrows, Charbonneau, Cowan, Crossfield, Dobbs-Dixon, Fortney, Goody, Hansen, Knutson, Knutson, Kristen Menou, Laughlin, Lewis, Liu, Miller, Miller, Perna, Perna, Rauscher, Rauscher, Showman, Showman, Showman, Showman, Winn   +29 more
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Earthquake aftereffects in the Equatorial Ionization Anomaly region under geomagnetic quiet and storm conditions

Advances in Space Research, 2017
Abstract In addition to multi-scale spatio-temporal trends that shape the ionosphere variability, the ionosphere responds to the disturbances that are solar, geomagnetic and seismic in origin. In this study, post-seismic ionospheric disturbances are investigated retrospectively from 1999 to 2015 using two different sets of ionospheric maps of the F2 ...
Gulyaeva, T. L., Arikan, F., Stanislawska, I.   +2 more
openaire   +3 more sources

Report of the Plasma Physics and Environmental Perturbation Laboratory (PPEPL) working groups. Volume 3: Magnetospheric experiments working group [PDF]

A number of general studies that were proposed for the PPEPL-SHUTTLE program are considered in qualitative detail from both the theoretical and practical points of view.

core   +1 more source

Rocket studies of the lower ionosphere [PDF]

The earth's ionosphere in the altitude range of 50 to 200 km was investigated by rocket-borne sensors, supplemented by ground-based measurement. The rocket payloads included mass spectrometers, energetic particle detectors, Langmuir probes and radio ...
Bowhill, Sidney A.
core   +1 more source

Statistical Study on the Effect of Meridional Neutral Wind on the Occurrence of Post‐Sunset Equatorial Ionospheric Irregularities

Space Weather
The navigation and radio communication systems experience significant disruptions due to post‐sunset equatorial ionospheric irregularities. There is ongoing debate regarding the impact of meridional/trans‐equatorial wind speed on these irregularities ...
Bantayehu Aderaw, Melessew Nigussie
doaj   +1 more source

Investigations of the ionosphere by space techniques [PDF]

Much of the impetus to ionosphere research since the International Geophysical Year has come from new types of measurement using space vehicles. The key developments are outlined, together with the contributions that they have made to the understanding ...
Bowhill, S. A.
core   +1 more source