Results 101 to 110 of about 87,822 (293)
Statistical analysis of low-latitude spread F observed over Puer, China, during 2015–2016
Earth, Planets and Space, 2019 Statistical analysis of spread F (SF), recorded at Puer (PUR, 22.7° N, 101.05° E, Dip Latitude 12.9° N) during 2015–2016, was carried out to reveal its characteristics at the northern equatorial ionization anomaly.
Ting Lan +5 more
doaj +1 more source
Three-Dimensional Numerical Simulations of Equatorial Spread F: Results and Observations in the Pacific Sector [PDF]
A three-dimensional numerical simulation of plasma density irregularities in the postsunset equatorial F region ionosphere leading to equatorial spread F (ESF) is described.
Aveiro, H. C. +7 more
core +1 more source
Density enhancements associated with equatorial spread F
Annales Geophysicae, 2010 Forces governing the three-dimensional structure of equatorial spread-F (ESF) plumes are examined using the NRL SAMI3/ESF three-dimensional simulation code. As is the case with the equatorial ionization anomaly (IA), density crests within the plume occur where gravitational and diffusive forces are in balance.
J. Krall +3 more
openaire +2 more sources
American Journal of Botany, EarlyView.Abstract Premise We examined the African arid corridor (AAC) disjunction pattern of vascular plants between northeastern and southwestern Africa in the context of geological and climatic events since the late Miocene. We developed a phylogenetic and biogeographical framework for the arid‐adapted genus Sesamothamnus (Pedaliaceae), a classic example of ...
John G. Zaborsky +6 more
wiley +1 more source
Behavior of topside and bottomside spread F at equatorial latitudes [PDF]
Diurnal variation of topside and bottomside spread-F and geomagnetic effects from Alouette I ...
Krishnamurthy, B. V.
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Equatorial spread F instability conditions as determined from ionograms
Geophysical Research Letters, 1982 Conditions of plasma irregularity (or Spread F) generation under the Rayleigh‐Taylor mechanism in the nighttime equatorial ionosphere are examined from ionogram data registered over Fortaleza (4°S, 38°W, mag. dip lat. −1.7°) Brazil for a one year period. The results show that local ionospheric conditions such as the bottomside F‐region electron density
M. A. Abdu +2 more
openaire +2 more sources
Seasonal variations of equatorial spread-F
Annales GeophysicaeThe occurrence of spread-F at Trivandrum (8.5°N, 77°E, dip 0.5°N) has been investigated on a seasonal basis in sunspot maximum and minimum years in terms of the growth rate of irregularities by the generalized collisional Rayleigh-Taylor (GRT ...
B. V. Krishna Murthy, K. S. V. Subbarao
doaj
Angewandte Chemie International Edition, EarlyView.The bimetallic M14 cluster [Co3Ga2]H(μ2‐GaTMP)9 was achieved by a co‐reductive approach utilizing Mg and H2 to selectively deprotect and capture the Ga‐TMP metallo‐ligands, forming a Co/Ga alloyed cluster kernel, making it a structural representative of a related solid‐state counterpart.
Fabrizio E. Napoli +6 more
wiley +1 more source
HF radar observations of equatorial spread-F over West Africa
Annales GeophysicaeNew experimental data depicting equatorial spread-F were taken during an HF radar sounding campaign in Korhogo (Ivory Coast, 9°24N, 5°37W, dip 4°S). Range-time-intensity maps of the radar echoes have been analyzed to identify the signatures of density ...
J.-F. Cécile, P. Vila, E. Blanc
doaj
Geo-engineering using dust grains in heliotropic elliptical orbits [PDF]
, 2011 This paper examines the concept of a Saturn-like Earth ring comprised of dust grains to offset global warming. A new family of non-Keplerian periodic orbits, under the effects of solar radiation pressure and the Earth’s oblateness J2 perturbation, is ...
Bewick, Russell +4 more
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