Results 81 to 90 of about 2,895 (251)

Second generation of CSES global geomagnetic field model (CGGM-2) and associated candidate models for IGRF-14

Earth, Planets and Space
This paper presents the second generation of the China Seismo-Electromagnetic Satellite (CSES) Global Geomagnetic Field Model (CGGM-2), specifically designed to derive candidate models for the fourteenth generation of the International Geomagnetic ...
Yanyan Yang, Zhima Zeren, Gauthier Hulot, Jie Wang, Nils Olsen, Siquan Yang, Bin Zhou, Werner Magnes, Bingjun Cheng, Jianpin Huang, Louis Chauvet, Dehe Yang, Roland Lammegger, Jian Lin, Dapeng Liu, Hengxin Lu, Na Zhou, Rui Yan, Zhenxia Zhang, Wei Chu, Song Xu, He Huang, Jing Cui, Qiao Tan, Wenjing Li, Feng Guo   +25 more
doaj   +1 more source

O regionalnom modeliranju geomagnetskog glavnog polja

Geofizika, 2007
U ovom istraživanju primijenila sam Sfernu harmoničku analizu na kuglinoj kaloti, (Spherical cap harmonic analyses), SCHA, s fizikalnom regularizacijom na nizu sintetskih podataka koji su dobiveni CM4 modelom (Comprehensive Model CM4) (Sabaka i sur., 2004) na lokacijama 46 Europskih opservatorija i 11 dodatnih opservatorija koji su izabrani radi ...
openaire   +2 more sources

Models of Present and Past Geomagnetic Core Field Evolution [PDF]

Journal Of The Geological Society Of India
ABSTRACT The main geomagnetic field originates in Earth’s outer core and shields our habitat against solar wind and cosmic radiation. Global descriptions of the field evolution are provided by data-based models. Such models are available for time spans from a few years to the past 100 kyr and some geomagnetic field polarity excursions ...
Monika Korte, Sanja Panovska, Maximilian A. Schanner, Ahmed N. Mahgoub, Martin Rother   +4 more
openaire   +1 more source

Quantum Phenomena in Molecular and Biological Systems: A Decoherence‐Based Decision Framework With Falsifiable Predictions and a Failure‐Mode Taxonomy

Advanced Physics Research, Volume 5, Issue 8, August 2026.
A physics‐grounded framework based on decoherence timescales (τ_dec vs τ_func), Markovian validity, and falsifiability criteria is applied across molecular systems to distinguish where quantum effects are necessary, marginal, or irrelevant. The analysis integrates quantum chemistry, biological quantum mechanisms, and quantum computing under a unified ...
Sarfaraz K. Niazi
wiley   +1 more source

Empirical Assessment of Storm‐Time Thermospheric Density Inversion Methods From LEO POD Data

Earth and Space Science, Volume 13, Issue 8, August 2026.
Abstract Thermospheric mass density is one of the largest sources of operational uncertainty for spacecraft in low Earth orbit, particularly during geomagnetic storms. The growing population of Global Navigation Satellite System‐equipped satellites presents a data set of opportunity: precise orbit determination (POD) data streams can be used to ...
Charles Constant, Indigo Brownhall, Anasuya Aruliah, Marek Ziebart, Santosh Bhattarai   +4 more
wiley   +1 more source

Pymaginverse: A python package for global geomagnetic field modeling [PDF]

Applied Computing and Geosciences
Data-based geomagnetic models are key for mapping the global field, predicting the movement of magnetic poles, understanding the complex processes happening in the outer core, and describing the global expression of magnetic field reversals. There exists a wide range of models, which differ in a priori assumptions and methods for the interpolation of ...
Frenk Out, Maximilian Schanner, Liz van Grinsven, Monika Korte, Lennart V. de Groot   +4 more
openaire   +4 more sources

On the Generation of Pre‐Sunrise Equatorial Plasma Bubbles in Southeast Asia During the Geomagnetic Storm of May 2024

Earth and Space Science, Volume 13, Issue 8, August 2026.
Abstract A set of fresh Equatorial Plasma Bubbles (EPBs) formed during pre‐sunrise hours in the Southeast Asian sector amid the recovery phase of May 2024 geomagnetic storm. They offered new insights into their formation mechanism. This study used Total Electron Content (TEC) and Rate of TEC Index maps over Indonesia, along with ionosondes in Thailand ...
Sri Ekawati, Prayitno Abadi, Takuya Sori, Rezy Pradipta, Ihsan Naufal Muafiry, Teguh Nugraha Pratama, Agri Faturahman, Noersomadi, Febrylian Fahmi Chabibi, Punyawi Jamjareegulgarn   +9 more
wiley   +1 more source

Improved construction method for regional geomagnetic benchmark map based on Taylor polynomial modeling

Shenzhen Daxue xuebao. Ligong ban
To address the issues of limited accuracy and poor adaptability in the traditional geomagnetic benchmark map modeling, we propose a construction method for regional geomagnetic benchmark map based on Taylor polynomial expansion.
LI Yunhong, LI Yunti, LI Shibo, AN Yuxin, HU Yingjie, ZHANG Zhaozhao, LIU Wanghong   +6 more
doaj   +1 more source

Polytropic Index and Thermodynamic Behavior of the Central Plasma Sheet Near Lunar Distances

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract In addition to making near‐Earth observations, the THEMIS/ARTEMIS mission is uniquely positioned at lunar distance, in the deep magnetotail, reaching distances of 60 RE ${R}_{E}$ and further. This vantage point allows ARTEMIS to access the plasma sheet and measure entropy evolution across convective channels, plasma flow gradients ...
Ephrem Tesfaye Desta, R. D. Strauss, N. E. Engelbrecht   +2 more
wiley   +1 more source

A Holocene Paleosecular Variation Record From the Northwestern Ross Sea, Antarctica

Geochemistry, Geophysics, Geosystems
We present a mid‐to‐late Holocene record of relative paleosecular variation from the Ross Sea region of Antarctica. The 6,700‐year‐long record of inclination, declination, and relative paleointensity from a marine sediment core collected near Cape Adare ...
Olivia J. Truax, Faye Nelson, Christina R. Riesselman, Christian Ohneiser, Jae Il Lee, Kyu‐Cheul Yoo, Bob Dagg, Gary Wilson   +7 more
doaj   +1 more source