Results 71 to 80 of about 15,850 (231)

Saponite Bearing Material Excavated During the Formation of a Recent 25‐m‐Diameter Impact Crater in Southeastern Arabia Terra on Mars

Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract Mars Reconnaissance Orbiter's Compact Reconnaissance Imaging Spectrometer for Mars (CRISM), Context Imager (CTX), and High Resolution Imaging Science Experiment observations were analyzed for a 25‐m‐wide impact crater and associated ejecta deposits located in the dust‐covered Arabia Terra region.
R. E. Arvidson, J. G. Catalano, J. R. Christian, A. A. Fraeman, M. N. Hughes, A. L. Knight, W. B. McKinnon, R. V. Morris, S. L. Murchie, J. A. O’Sullivan, D. V. Politte, F. Seelos, M. J. Wolff, F. Zhou   +13 more
wiley   +1 more source

Interaction of gases with lunar materials [PDF]

Quantitative efforts to assess the surface properties of lunar fines, particularly water induced porosity are discussed. Data show that: (1) changes induced in lunar fines are not visible in high energy electron micrographs, (2) scanning micrographs show
Fuller, E. L., Jr., Gammage, R. B., Holmes, H. F.   +2 more
core   +1 more source

A geochemical study of the winonaites: Evidence for limited partial melting and constraints on the precursor composition [PDF]

, 2017
The winonaites are primitive achondrites which are associated with the IAB iron meteorites. Textural evidence implies heating to at least the Fe, Ni–FeS cotectic, but previous geochemical studies are ambiguous about the extent of silicate melting in ...
Benedix, Gretchen K., Bland, Philip A., Hammond, Samantha J., Hunt, Alison C., Kreissig, Katharina, Rehkämper, Mark, Strekopytov, Stanislav   +6 more
core   +2 more sources

A Novel Technique for Extracting the Tidal Magnetic Field: Methodology and Application to a Pre‐Processed Dataset of CSES and Swarm

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract The oceanic tidal magnetic field, mainly driven by the circular orbital motion of the Moon, is an essential part of the time‐varying geomagnetic field. The previously adopted time‐harmonic (TH) base worked well in fitting the primary M2 ${M}_{2}$ tidal field, but extracting the other weaker modes like the N2 ${N}_{2}$ was difficult with only a
Haoren Ma, Yanyan Yang, Zhaojin Rong, Dongquan Wang, Jiawei Gao, Zeren Zhima, Jie Wang, Bin Zhou, Werner Magnes, Fei He, Y. Wei   +10 more
wiley   +1 more source

Introduction to the Apollo collections: Part 2: Lunar breccias [PDF]

Basic petrographic, chemical and age data for a representative suite of lunar breccias are presented for students and potential lunar sample investigators. Emphasis is on sample description and data presentation.
Mcgee, P. E., Phinney, W. C., Simonds, C. H., Warner, J. L.   +3 more
core   +1 more source

Evolution of Magnetospheric Boundary Layers Under the 10 May 2024 ICME Impact

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract On 10 May 2024, an interplanetary coronal mass ejection‐driven shock impacted the dayside magnetopause, compressing it to ∼5 RE. A northward interplanetary magnetic field suppressed dayside reconnection and allowed a clear investigation of the magnetosphere response.
Sheng Li, Gilbert Pi, Zdeněk Němeček, Jana Šafránková, Trevor W. Leonard, Yang‐Yi Sun   +5 more
wiley   +1 more source

The thermal equation of state of FeTiO_3 ilmenite based on in situ X-ray diffraction at high pressures and temperatures [PDF]

, 2010
We present in situ measurements of the unit-cell volume of a natural terrestrial ilmenite (Jagersfontein mine, South Africa) and a synthetic reduced ilmenite (FeTiO_3) at simultaneous high pressure and high temperature up to 16 GPa and 1273 K.
Chen, B., de Vries, J., Gao, L., Klemme, S., Li, J., McCammon, C. A., Sanehira, T., Tronche, E. J., van Kan Parker, M., van Westrenen, W., Wang, Y.   +10 more
core   +1 more source

Frequency‐Dependent Latitudinal Distributions of Plasmaspheric Plume Hiss Directionality and Amplitude

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Plasmaspheric plume hiss plays a crucial role in shaping Earth's electron radiation belts and influencing magnetosphere–ionosphere energy coupling. However, its generation mechanism remains contested between cyclic‐linear and localized‐nonlinear models. By analyzing over 64,000 high‐resolution plume hiss wave segments from the Van Allen Probes
Zhiyong Wu, Zhenpeng Su, Huinan Zheng, Yuming Wang   +3 more
wiley   +1 more source

First mineralogical maps of 4 Vesta [PDF]

, 2012
Before Dawn arrived at 4 Vesta only very low spatial resolution (~50 km) albedo and color maps were available from HST data. Also ground-based color and spectroscopic data were utilized as a first attempt to map Vesta’s mineralogical diversity [1-4]. The
Ammannito, E., Barucci, M. A., Blewett, D., Capaccioni, F., Capria, M. T., Combe, J. P., De Sanctis, Maria Cristina, Denevi, B., Frigen, A., Jaumann, Ralf, Keller, H. U., Le Corre, L., Li, J. Y., Marchi, S., McCord, T. B., McFadden, L.A., McSween, H.Y., Nathues, A., Palomba, E., Pieters, Carle M., Raymond, C.A., Reddy, V., Russell, C.T., Stephan, K., Sunshine, J.M., Toplis, M., Tosi, Nicola, Yingst, A., Zambon, A.   +28 more
core  

Coupled Space Weathering: Nanophase Iron Formation by Micrometeoroid Impact and Solar Wind Sputtering

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract Understanding the interplay between micrometeoroid impacts and solar wind irradiation is crucial for interpreting lunar surface evolution. Using reactive molecular dynamics simulations and surface binding energy (SBE) analyses, this study investigates the coupled effects of these two dominant space weathering processes on lunar regolith ...
Ziyu Huang, Masatoshi Hirabayashi
wiley   +1 more source