Results 111 to 120 of about 2,347 (211)
Geochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.Abstract The Cretaceous/Paleogene (K/Pg) Chicxulub impact produced globally synchronous enrichments of highly siderophile elements (HSEs) and a pronounced decline in marine osmium isotope ratios (187Os/188Os), forming a key geochemical marker of the boundary.
Honami Sato +6 more
wiley +1 more source
One Hundred Thousand Years of Geomagnetic Field Evolution
, 2019 Paleomagnetic records from sediments, archeological artifacts, and lava flows provide the foundation for studying geomagnetic field changes over 0–100 ka.
C. G. Constable +5 more
core +1 more source
Estimating the extremes in European geomagnetic activity [PDF]
, 2009 Rapidly changing geomagnetic field variations constitute a natural hazard, for example in navigation and, through geomagnetically induced currents, to power grids and pipeline networks.
Thomson, Alan, Dawson, Ewan, Reay, Sarah
core
Using neural networks to study the geomagnetic field evolution
, 2008 study their time evolution in years. In order to find the best NN for the time predictions, we tested many different kinds of NN and different ways of their training, when the inputs and targets are long annual time series of synthetic geomagnetic ...
Hyka, N., Duka, B.
core
, 2013 Cette thèse comporte deux thèmes principaux: l'un concerne l'accélération non adiabatique des ions dans la couche de plasma proche de la Terre, l'autre les pulsations géomagnétiques dues à la décroissance de la pression dynamique du vent solaire.
Wang, Zhiqiang
core
Low Abundances of Ultramafic Components in the Chang'e‐6 Landing Site Basalt and Ejecta Material
Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.Abstract The South Pole‐Aitken (SPA) Basin, the Moon's largest impact structure, holds key insights into lunar evolution, prompting the Chang'e‐6 mission to return first samples for ground‐truth verification. Analysis of over 6,000 grains from the Chang'e‐6 soil returned from the SPA Basin reveals a composition dominated by clinopyroxene (26.5–32.9 vol.
Zhenbing She +20 more
wiley +1 more source
한국해양공학회지Accurate geomagnetic field mapping plays a critical role in the navigation and localization of autonomous underwater vehicles (AUVs), especially in environments where traditional satellite navigation is unavailable. This paper introduces a spatiotemporal
Dongwook Lee, Hyunkeun Cho, Jinwhan Kim
doaj +1 more source
Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.Abstract Using Van Allen Probes data (2013–2015), we report that highly oblique chorus waves frequently occur in low‐density regions where fpe/fce≈3 ${f}_{\text{pe}}/{f}_{\text{ce}}\approx 3$. These waves exhibit an electric‐to‐magnetic energy ratio PE/c2PB>0.5 $\sqrt{{P}_{\mathrm{E}}/{c}^{2}{P}_{\mathrm{B}}} > 0.5$, much higher than the typical <0.1 ${
Lixian Yang +10 more
wiley +1 more source
Short-term prediction of geomagnetic secular variation with an echo state network
Earth, Planets and SpaceA technique for predicting the secular variation (SV) of the geomagnetic field based on the echo state network (ESN) model is proposed. SV is controlled by the geodynamo process in the Earth’s outer core, and modeling its nonlinear behaviors can be ...
Shin’ya Nakano, Sho Sato, Hiroaki Toh
doaj +1 more source
Bounce Resonance Between ULF Waves and Electrons in the Dayside Outer Magnetosphere
Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.Abstract Resonant interactions between ultra‐low‐frequency (ULF) waves and particles are critical for energy transfer in the Earth's magnetosphere, and have been extensively investigated in the inner magnetosphere. However, resonant processes between ULF waves and electrons in the dayside outer magnetosphere remain largely unexplored.
Zi‐He Zhao +10 more
wiley +1 more source