Results 101 to 110 of about 411,589 (180)

Origins and Alteration of Ediacaran Carbonates Recording the Shuram Excursion in Oman

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 5, May 2025.
Abstract The Shuram excursion is the largest known negative carbon isotope excursion in Earth's history. Recognized globally, it follows the Ediacaran Gaskiers glaciation and precedes a marked increase in the diversity and complexity of the earliest macroscopic multicellular organisms in the fossil record.
Kristin D. Bergmann, Magdalena R. Osburn, Noah T. Anderson, Claire Hayhow, Julia Wilcots, Marjorie D. Cantine, Woodward W. Fischer, Magali Bonifacie   +7 more
wiley   +1 more source

From Magma Formation to Eruption: Temperature Path of Two Late Carboniferous Post‐Collisional Calderas (Bohemian Massif)

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 5, May 2025.
Abstract The thermal evolution of magmatic systems of the Altenberg‐Teplice and Tharandter Wald calderas, which erupted during the terminal post‐collisional phase of the Variscan orogeny in the Bohemian Massif, was investigated. The zircon saturation temperatures and Ti‐in‐zircon thermometer indicate that the intrusive and extrusive units of the two ...
I. Olšanská, F. Tomek, C. Robustelli Test, E. Zanella, M. Svojtka, J. Trubač, F. Cifelli, F. Finger   +7 more
wiley   +1 more source

Effect of the Planet Shine on the Corona: Application to the Venusian Hot Oxygen

Journal of Geophysical Research: Space Physics, Volume 130, Issue 5, May 2025.
Abstract This paper presents a new derivation of the hot oxygen density in the Venusian upper exosphere (above 500 km) from Pioneer Venus Orbiter (PVO) ultraviolet spectrometer data, considering the effect of the solar photons backscattered by the oxygen atoms below ∼300 km (Venus shine), not included in past analysis, with a resonant scattering ...
J.‐Y. Chaufray, S. Carberry Mogan, J. Deighan   +2 more
wiley   +1 more source

The Propagation and Evolution of Polar Cap Patches During Auroral Substorm Activity

Journal of Geophysical Research: Space Physics, Volume 130, Issue 5, May 2025.
Abstract Polar cap patches are islands of enhanced plasma density formed during intervals of southward interplanetary magnetic field (IMF). The present study examines the observations of polar cap patches during sequential auroral substorms that occurred on 9 September 2011.
Jianjun Liu, Yaqi Jin, Xiangcai Chen, Zhiwei Wang, Fang He, Zejun Hu, Akira Sessai Yukimatu, William Bristow, Hongqiao Hu, Beichen Zhang   +9 more
wiley   +1 more source

Electron Acceleration and Zebra Stripe Formation in Saturn's Radiation Belts

Journal of Geophysical Research: Space Physics, Volume 130, Issue 5, May 2025.
Abstract This study uses the Versatile Electron Radiation Belt code to model Saturn's radiation belt environment, investigating electron acceleration, loss, and transport mechanisms. The simulations consider various physical processes, including convection particularly driven by a Volland‐Stern (VS) electric field, radial diffusion, collisional energy ...
A. Y. Drozdov, P. Kollmann, Y. Hao, D. Wang, E. E. Woodfield   +4 more
wiley   +1 more source

Solar Cycle and Seasonal Dependences of Field‐Aligned Currents

Space Weather, Volume 23, Issue 5, May 2025.
Abstract Enhancements of Birkeland field‐aligned currents (FACs) have been reported during magnetospheric substorms and geomagnetic storms. While FACs related to geomagnetic disturbances have been extensively studied, the long‐term variations of FACs remain less explored.
Rajkumar Hajra, Bruce T. Tsurutani, Quanming Lu, Aimin Du, San Lu, Ezequiel Echer   +5 more
wiley   +1 more source

Analyzing AZ-non-Maxwellian distributions in Earth's magnetosphere: MMS observations. [PDF]

Sci Rep
Abid AA, Hussain MS, Esmaeili A, Khan A, Ali S, Alharbi M, Al-Hadeethi Y, Bedaiwi NM.   +7 more
europepmc   +1 more source

Fast radio bursts and the radio perspective on multi-messenger gravitational lensing. [PDF]

Philos Trans A Math Phys Eng Sci
Pastor-Marazuela I.
europepmc   +1 more source

Large scale purification in semiconductors using Rydberg excitons. [PDF]

Nat Commun, 2023
Bergen M, Walther V, Panda B, Harati M, Siegeroth S, Heckötter J, Aßmann M.   +6 more
europepmc   +1 more source

Improved Ionization Potential Depression Model Incorporating Dynamical Structure Factors and Electron Degeneracy for Non-Ideal Plasma Composition. [PDF]

Entropy (Basel)
Seitkozhanov Y, Dzhumagulova K, Shalenov E.   +2 more
europepmc   +1 more source