Results 191 to 200 of about 521,689 (245)

Experimental Shock Metamorphism of Zircon, Apatite, and Whitlockite From 5 to 40 GPa

open access: yesJournal of Geophysical Research: Planets, Volume 131, Issue 10, October 2026.
Abstract Hypervelocity impacts modify planetary crusts and can alter the microstructures of key minerals used to reconstruct planetary histories. We investigated the potential effects of impacts on three common accessory minerals found in terrestrial crusts by experimentally shocking zircon, apatite, and whitlockite at 5, 10, 20, and 40 GPa.
K. A. Cone   +10 more
wiley   +1 more source

Optical Depths of Dust Devils Observed in Gale Crater, Mars

open access: yesJournal of Geophysical Research: Planets, Volume 131, Issue 10, October 2026.
Abstract The Mars Science Laboratory (MSL) Curiosity Rover has detected dust devils using the on‐board Navigation Cameras (Navcam) and the Rover Environmental Monitoring Station (REMS) throughout the MSL mission. While previous studies have quantified the frequency and location of dust devils, their optical depth and how it changes with time, season ...
G. Bischof   +3 more
wiley   +1 more source

Distal Rays and Secondary Craters of the Tycho Impact Event Revealed Through Deep Learning

open access: yesJournal of Geophysical Research: Planets, Volume 131, Issue 10, October 2026.
Abstract The nature of secondary impact craters is a matter of ongoing debate, with important implications for understanding the impact cratering process, and for calibration of crater chronology. Rays generated by primary impact craters are characterized by secondary craters, providing identifiable terrains to study the size, morphology and clustering
G. Magnarini   +5 more
wiley   +1 more source

Ancient Impact Melt Near the Lunar South Pole: Distribution, Provenance, and Sampling Strategy

open access: yesJournal of Geophysical Research: Planets, Volume 131, Issue 10, October 2026.
Abstract Due to a lack of pre‐Nectarian samples associated with specific impacts in the Apollo suite, the early Solar System's impact chronology is poorly constrained. We investigate where Artemis and other south polar lunar missions could sample impactites to determine the ages of pre‐Nectarian craters, focusing on the ancient craters Haworth ...
J. K. Ando   +10 more
wiley   +1 more source

A Machine Learning Framework for Retrieving Atmospheric Composition and the Associated Averaging Kernels From a Geostationary Hyperspectral Infrared Sounder

open access: yesJournal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 5, October 2026.
Abstract Geostationary hyperspectral infrared sounders provide hourly observations of the atmospheric composition. However, the conventional optimal estimation method (OEM)‐based retrieval algorithm requires computationally expensive radiative transfer calculations and inverse modeling, making it difficult to monitor in real time. This study presents a
Sirui Wu   +4 more
wiley   +1 more source

A Multi‐Analytical Approach for the Compositional Characterization and Chronological Discrimination of Benin (Nigeria) Metal Sculptures

open access: yesArchaeometry, Volume 68, Issue 5, Page 1022-1036, October 2026.
ABSTRACT This study presents a multi‐analytical archaeometric approach for the compositional characterization and chronological discrimination of Benin metal sculptures in relation to the 1897 Punitive Expedition. The methodology integrates elemental composition (XRF and ICP), stable lead isotope ratios (MC‐ICP‐MS) for alloy system characterization ...
I. Torraba   +5 more
wiley   +1 more source

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