Results 61 to 70 of about 33,721 (170)

Chorus Wave–Driven Electron Dynamics in the Van Allen Belts: From Coherence to Diffusion

AGU Advances, Volume 6, Issue 6, December 2025.
Abstract The Van Allen radiation belts contain relativistic electrons trapped by Earth's magnetic field, posing serious risks to spacecraft. Chorus waves are known to accelerate these electrons via resonant interactions, but these interactions are inherently nonlinear and coherent.
Xin Tao, Zeyu An, Fulvio Zonca, Liu Chen, Jacob Bortnik   +4 more
wiley   +1 more source

Numerical simulations of multi-scale astrophysical problems: The example of Type Ia supernovae

, 2007
Vastly different time and length scales are a common problem in numerical simulations of astrophysical phenomena. Here, we present an approach to numerical modeling of such objects on the example of Type Ia supernova simulations.
Roepke, F. K.
core   +1 more source

Science and Technology Education for Land / Life Assessment (STELLA): Democratizing Remote Sensing Science With Low‐Cost Open‐Source Instruments for Research and Education

Perspectives of Earth and Space Scientists, Volume 6, Issue 1, December 2025.
Abstract NASA scientists and engineers, in collaboration with university researchers, have developed low‐cost lightweight remote sensing instruments that anyone can build and use to bring remote sensing science to communities beyond traditional professional scientists. Built from commercially available components, these Science and Technology Education
Paul Mirel, Michael P. Taylor, William Jesse Barber, Petya Campbell, Bianca Cilento, Lynn M. Nichols, Manuel Lerdau   +6 more
wiley   +1 more source

Efficient Sampling of Geophysical Sensor Arrays on the Seafloor

Perspectives of Earth and Space Scientists, Volume 6, Issue 1, December 2025.
Abstract The great expense of deploying dense arrays of seafloor sensors for continuous collection of geophysical data inhibits the proliferation of measurement systems to the majority of the planet's surface. Advancing geophysical coverage offshore will require technologies different from conventional methods applied onshore where electrical power and
M. A. Zumberge, D. Horwitt
wiley   +1 more source

A Generalized New Method for Anomalous Phased Array Radar Echo Image Restoration Based on Generative Adversarial Network

Earth and Space Science, Volume 12, Issue 12, December 2025.
Abstract X‐band Phased array radars are characterized by high spatial and temporal resolution, but suffer from a range of data quality problems, such as echo voids after the filtering of ground clutter, abnormal radials, radial obstructions and irregular missing radar echoes. This paper proposes a radar echo image restoration model (GCD) based on color
Jinyan Xu, Ling Yang, Xiaoqiong Zhen, Yan Fu, Zhendong Yao, Chong Wu, Chao Chen   +6 more
wiley   +1 more source

Analysis of South Atlantic Anomaly Influence on Low‐Earth Orbit Lightning Observations

Earth and Space Science, Volume 12, Issue 12, December 2025.
Abstract The low‐Earth orbit Optical Transient Detector (OTD) and Lightning Imaging Sensor (LIS) instruments, spanning 1995–2023, have spatiotemporal patterns within their metadata that are consistent with the South Atlantic Anomaly (SAA). While the SAA had a known influence on these instruments, this study details new variability and impacts.
A. G. Clark, T. J. Lang, S. Fung, D. Mach, D. E. Buechler, D. J. Cecil   +5 more
wiley   +1 more source

Community Voices on the Future of Radiation Belt Research: A Summary of the 2024 GEM Radiation Belt Focus Group Round‐Table Discussion

Earth and Space Science, Volume 12, Issue 12, December 2025.
Abstract Earth's radiation belts are the regions where highly energetic charged particles are trapped by Earth's magnetic field, posing significant risks to the satellites and other space‐based technologies. Understanding the dynamics of the radiation belts is critical not only for advancing fundamental plasma physics but also for predicting and ...
Hong Zhao, Lauren Blum, Aleksandr Ukhorskiy, Xiangrong Fu   +3 more
wiley   +1 more source

Methods for Cleaning Apollo Passive Seismic Data

Earth and Space Science, Volume 12, Issue 12, December 2025.
Abstract Apollo passive seismic data provide a unique resource for studying the lunar interior structure. However, the raw data are frequently contaminated by various artifacts, either related to the seismic sensors and the acquisition system or to issues during data transmission to the Earth.
Xiang Zhang, Philippe Lognonné, Taichi Kawamura, Zongbo Xu, Henri Samuel, Grégory Sainton, Marouchka Froment, Sabrina Menina, Keisuke Onodera   +8 more
wiley   +1 more source

Abiotic Siliceous Botryoids on Iron Oxyhydroxide Filaments From Hydrothermal Vents in the Southwest Indian Ocean

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 12, December 2025.
Abstract Fe‐oxidizing microorganisms in deep‐sea hydrothermal vent environments are often used as analogs for primordial life on Earth. In fact, Earth's oldest purported microfossils are preserved as hematite filaments in a jasper rock dated between 4,160 and 4,280 million years and are thought to have originated in a seafloor hydrothermal environment.
Dominic Papineau, Kaiwen Ta, Yuzhou Ge, Yuangao Qu, Mengran Du, Jiwei Li, Shuang Liu, Dongmei Wang, Xiaotong Peng   +8 more
wiley   +1 more source

Automatic Analysis of Hydroacoustic Signals Related to the Activity of the Fani Maoré Submarine Volcano

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 12, December 2025.
Abstract Due to the properties of sound propagation underwater, including the existence of the SOFAR channel, sounds in the ocean can propagate over large distances with little attenuation. This makes passive acoustics a relevant method for monitoring natural events such as ice calving, earthquakes, and underwater volcanic eruptions.
Pierre‐Yves Raumer, Sara Bazin, Romain Safran, Dorian Cazau, Jean‐Yves Royer   +4 more
wiley   +1 more source