Results 41 to 50 of about 5,178 (157)

Comparison of ICON/MIGHTI and TIMED/SABER Neutral Temperature Measurements at Conjunctions in the Lower Thermosphere

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, Michael Stevens, John Emmert, Martin Mlynczak, McArthur Jones Jr.   +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

Constraints on planet X/Nemesis from Solar System's inner dynamics

, 2009
We put full 3D constraints on a putative planet X by using the dynamics of the inner planets of the solar system. In particular, we compute the mimium distance of X as a function of its heliocentric latitude and longitude for different values of its mass.
Anderson, Babich, Bertotti, Brunini, Brunini, Davis, Deller, Di Stefano, Eichler, Foot, Gaudi, Gomes, Harrison, Hogg, Horner, H��g, Iorio, Jewitt, Khriplovich, Khriplovich, Kowal, L. Iorio, Larsen, Lowell, Lykawka, Matese, Melita, Montenbruck, Muller, Murray, Neugebauer, Pitjeva, Raup, Schwamb, Seto, Silagadze, Standish, S��bastien, Tombaugh, Vandervoort, Whitmire, Zakamska   +41 more
core   +2 more sources

Measuring the Oblateness and Rotation of Transiting Extrasolar Giant Planets [PDF]

The Astrophysical Journal, 2003
13 pages -- accepted to the Astrophysical ...
Barnes, Jason W., Fortney, Jonathan J.
openaire   +2 more sources

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

Satellite motion for all inclinations around an oblate planet [PDF]

Symposium - International Astronomical Union, 1966
A uniformly valid solution for the motion of a satellite around an oblate planet is presented. The Two-Variable Expansion Procedure was applied to obtain a solution valid for all inclinations including the critical. This solution is correct to order ε, where ε is a small parameter proportional to the oblateness parameterJ2. The reciprocal of the radius
M. Eckstein, Y. Shi, J. Kevorkian
openaire   +1 more source

Topographical Features of the Lunar Surface Unveiled Through Spherical Geodesic Triangulation Analysis Method of DEM Roughness at Equal Spatial Scales

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, Lei Chen, Huai Zhang, Yaolin Shi   +3 more
wiley   +1 more source

Determining Magnetic Field Intensity and Direction From the Anisotropy of Magnetic Remanence in Sediments

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 4, April 2026.
Abstract Anisotropy of magnetic remanence (AMR) holds promise for quantifying relative paleointensity values from sedimentary rocks. A proof of concept was established for applied fields that exceeded the intensity of the geomagnetic field. Under Earth‐like fields, large uncertainties necessitate the development of a new approach to improve the ...
Felix K. Ostermeier, Stuart A. Gilder, Michael R. Wack, Josef Ježek, Kuang He, David Finn   +5 more
wiley   +1 more source

Juno Observations of Large‐Scale Azimuthal Fields and Flows in Jupiter's Nightside Magnetosphere: Field‐Aligned Currents, Effective Ionospheric Pedersen Conductivity, and Power to Atmospheric Heating

Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract Using the methodology of Cowley et al. (https://doi.org/10.1029/2025JA033993), we employ ∼8 years of Juno azimuthal magnetic field data to derive colatitude profiles of Jupiter's nightside (17‐05 hr via midnight) ionospheric equatorward Pedersen current from near the magnetic pole to inner magnetosphere field lines at 18° colatitude, from ...
G. Provan, S. W. H. Cowley, J. D. Nichols, J.‐Z. Wang, R. J. Wilson   +4 more
wiley   +1 more source

Large Deformation, Pressure‐Driven Mechanistic Modeling of the 2018 Caldera Collapse at Kīlauea Volcano, HI

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 4, April 2026.
Abstract Volcanic calderas are large depressions formed by the rapid collapse of overlying rock into a magma chamber during eruptions. We utilize Smoothed Particle Hydrodynamics (SPH), a continuum, meshfree numerical method, to study the 2018 caldera collapse at Kīlauea volcano in Hawaii.
Enrique M. del Castillo, Paul Segall
wiley   +1 more source