Results 71 to 80 of about 674 (209)

Bidirectional Energy Transfer via Simultaneous Wave‐Particle Resonances in Inhomogeneous Space Plasmas

AGU Advances, Volume 7, Issue 4, August 2026.
Abstract Wave‐particle resonance is a key mechanism for energy transfer in collisionless plasmas with important implications for wave excitation and particle acceleration. Cyclotron resonance occurs when a particle's gyromotion synchronizes with the wave fields, with their interactions usually describable by quasilinear diffusion or nonlinear trapping.
Jing‐Huan Li, Xu‐Zhi Zhou, Shan Wang, Zhi‐Yang Liu, Yuri V. Khotyaintsev, Daniel B. Graham, Qiu‐Gang Zong, Chao Yue, Anton V. Artemyev, Yoshiharu Omura, Si Liu, Li Li, Jie Ren, Zi‐Kang Xie, Yun Yan   +14 more
wiley   +1 more source

A Physics-Guided Diffusion Unmixing Model for Global Lunar Mineral Abundance Mapping

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Accurate global mapping of lunar regolith minerals is critical for understanding the geological evolution and resource potential of the Moon. However, spectral unmixing algorithms originally designed for terrestrial remote sensing often perform poorly ...
Pan Zheng, Hongjun Su, Zhaoyue Wu, Juan M. Haut, Mercedes E. Paoletti   +4 more
doaj   +1 more source

An Oceanic Mechanism for Geyser Formation on Enceladus

AGU Advances, Volume 7, Issue 5, August 2026.
Abstract The tiger stripes of Enceladus are a sequence of four parallel and evenly‐spaced fissures 130 km long that erupt water from a global subsurface ocean into space. We present an ocean dynamical theory of their formation. Given one initial fissure, topography on the underside of the ice shell rubs periodically against the ocean due to the ...
D. Y. Abdulah, W. Kang, A. Berne
wiley   +1 more source

Long-Wave Infrared Multispectral Imager for Lunar Remote Sensing: Optical Design and Performance Evaluation

Photonics
High-resolution long-wave infrared imaging is critical for lunar mineralogy. However, it must balance a large FOV, a small F-number, chromatic aberration correction, optical efficiency, and system compactness.
Haoyang Hu, Jianan Xie, Shiyi Qian, Liyin Yuan, Zhiping He   +4 more
doaj   +1 more source

Supervised Machine Learning Approach to Iron Meteorite Classification Using Random Forest: A Predictive Model to Classify Ungrouped Irons

Earth and Space Science, Volume 13, Issue 8, August 2026.
Abstract Iron meteorites provide insight into the formation processes of planetary cores from the early Solar System. Through further classifying individual irons into specific groups, which are assumed to represent a common parent body, greater information can be yielded into the formation processes of those bodies.
A. F. Rogers, L. Doucet, L. V. Forman, K. Rankenburg, G. K. Benedix   +4 more
wiley   +1 more source

The Global Distribution of Water and Hydroxyl on the Moon as Seen by the Moon Mineralogy Mapper (M3)

The Planetary Science Journal
The Moon Mineralogy Mapper (M ^3 ) on the Chandrayaan-1 spacecraft provided nearly global 0.5–3 μ m imaging-spectroscopy data at 140 m pixel ^–1 in 85 spectral bands. Targeted locations were imaged at 70 m pixel ^–1 and higher spectral resolution.
Roger N. Clark, Neil C. Pearson, Thomas B. McCord, Deborah L. Domingue, Keith Eric Livo, Joseph W. Boardman, Daniel P. Moriarty, Amanda R. Hendrix, Georgiana Kramer, Maria E. Banks   +9 more
doaj   +1 more source

Localization and Classification of Gravity Wave Events From VIIRS Day/Night Band Satellite Imagery Using Machine Learning Techniques

Earth and Space Science, Volume 13, Issue 8, August 2026.
Abstract Gravity waves in the upper mesosphere produce diverse spatial patterns in nighttime airglow, but their global morphology has been difficult to characterize because manual identification is impractical for the massive satellite image archive. We developed a machine learning framework to detect and classify gravity wave events in imagery from ...
Yuta Hozumi, Jia Yue, Seraj Al Mahmud Mostafa, Chenxi Wang, Jianwu Wang, Sanjay Purushotham, Steven D. Miller   +6 more
wiley   +1 more source

Developing New Amphibole Thermobarometers to Constrain High P‐T Hydration Processes of Basic‐Ultrabasic Rocks

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 8, August 2026.
Abstract Amphibole compositions record high‐pressure‐temperature (P‐T) hydration processes during magmatism and metamorphism in the deep Earth. However, amphibole thermobarometers calibrated for basic–ultrabasic systems are scarce. To address this issue, we compiled Ca‐amphibole data from published equilibrium experiments and used machine‐learning ...
Wenbo Xu, Weilin Chen, Shubham Choudhary, Shijie Li, Jintao Zhu, Xiaogang Ma, Jiamin Wang, Shujuan Jiao, Guibin Zhang, Lifei Zhang, Renbiao Tao   +10 more
wiley   +1 more source

Spatial–Spectral Fusion 3D Signal Compensation for Moon Mineralogy Mapper (M3) Hyperspectral Images in Low-Signal Lunar Polar Regions

Remote Sensing
Hyperspectral images (HSIs) from the lunar polar regions are frequently compromised by low signal-to-noise ratio (SNR) under adverse illumination, limiting their utility for scientific analysis.
Rui Ni, Tingyu Meng, Fei Zhao, Yanan Dang, Wenbin Zhang, Pingping Lu   +5 more
doaj   +1 more source

Distinct Transcrustal Evolutions of Komatiitic Primitive Magma: Implications for the Compositional Dichotomy of Continental Flood Basalts

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 8, August 2026.
Abstract The origin of the compositional dichotomy between high‐Ti and low‐Ti basalts in continental flood basalt provinces remains debated. Most existing studies attribute this dichotomy directly to variations in primitive magma composition to circumvent the complexities of significant evolutionary processes, such as multiphase fractional ...
Zongpeng Yang, Tong Hou, Roman Botcharnikov, Evangelos Moulas, Meng Wang, Stephan Buhre, Zhaochong Zhang   +6 more
wiley   +1 more source