Results 31 to 40 of about 203 (129)
Updates, Examples and Validation of the Global Ionosphere Thermosphere Model
Space Weather, Volume 24, Issue 5, May 2026.Abstract This study provides an updated description, example simulations, and validation of the Global Ionosphere Thermosphere Model (GITM). The updates to GITM include using an exothermic semi‐implicit chemistry scheme that no longer requires an altitude dependent heating efficiency; an ionospheric wind‐driven dynamo; improved neutral, ion, and ...
A. J. Ridley +3 more
wiley +1 more source
Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.Abstract This study presents a cross‐comparison of mesosphere and lower thermosphere (MLT) neutral temperatures between 88 and 110 km measured by ICON/Michelson Interferometer for Global High‐resolution Thermospheric Imaging (MIGHTI) and Thermosphere Ionosphere Mesosphere Energetics and Dynamics/Sounding of the Atmosphere using Broadband Emission ...
Manbharat Dhadly +4 more
wiley +1 more source
Microspherules formed by lightning strikes
Meteoritics &Planetary Science, Volume 61, Issue 5, Page 743-767, May 2026.Abstract Natural microspherules are formed by high‐temperature processes and are present throughout the geologic record to the present day. We report the discovery of large numbers of microspherules recovered from a rock pavement in the Pilbara region, Western Australia.
M. R. Boyd, M. J. Genge, A. G. Tomkins
wiley +1 more source
Mountain‐top spherules: Criteria to identify natural and synthetic particles
Meteoritics &Planetary Science, Volume 61, Issue 5, Page 898-913, May 2026.Abstract Natural microspherules are important tracers of geologic and environmental processes in modern and ancient deposits. However, anthropogenic contamination can dilute natural collections by releasing synthetic microspherules into the environment.
M. R. Boyd, M. J. Genge
wiley +1 more source
Earth and Space Science, Volume 13, Issue 4, April 2026.Abstract This study introduces an innovative method using equal spherical geodesic triangulation to uniformly sample the digital elevation model (DEM) of the lunar surface, ensuring an even distribution of elevation data. Utilizing spherical spline fitting, we have proposed new methods for calculating slope angles and aspects. An equilateral triangular
Zhengfeng Zhang +3 more
wiley +1 more source
Invariant properties of the spheroidal potential of an oblate planet
Journal of Research of the National Bureau of Standards Section B Mathematics and Mathematical Physics, 1966 Gravitational potential of oblate planet, expressed in terms of oblate spheroidal coordinates, generalized by means of transformation of associated Cartesian ...
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Albedo effects in the ER3BP with an oblate primary, a triaxial secondary and a potential due to belt. [PDF]
Sci Rep, 2023 Singh J, Richard TK.
europepmc +1 more source
The collinear equilibrium points in the elliptic restricted synchronous three-body problem under an oblate primary and a dipole secondary. [PDF]
Heliyon, 2023 Singh J, Tyokyaa RK.
europepmc +1 more source
Twist and non-twist regimes of the oblate planet problem
Rendiconti Lincei, Matematica e Applicazioni, 2017 We consider the dynamics of a point-mass object, e.g. a small satellite, around a primary rigid body, e.g. a planet. We assume that the planet is oblate and axially symmetric with respect to the vertical axis. Revisiting a procedure described in [19], we make use of the first integrals (the energy and the projection of the angular momentum on the ...
Celletti A., Paita F., Pucacco G.
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A Return to the Sextant-Maritime Navigation Using Celestial Bodies and the Horizon. [PDF]
Sensors (Basel), 2023 Critchley-Marrows JJR, Mortari D.
europepmc +1 more source