Results 261 to 270 of about 271,848 (328)
Geomagnetic Variability in a Post‐Superchron Geodynamo: Insights From the Deccan Traps
Journal of Geophysical Research: Solid Earth, Volume 131, Issue 1, January 2026.Abstract Studying long‐term geomagnetic field behavior is crucial for understanding Earth's evolution, as field variability reflects processes in the planet's deep interior. One key question concerns the relationship between field strength and polarity reversal frequency, particularly during the Cretaceous Normal Superchron (CNS), a prolonged interval ...
K. E. Bristol +6 more
wiley +1 more source
Deep Water Renewal in the Amerasian Basin Derived From Natural and Anthropogenic Tracer Data Sets
Journal of Geophysical Research: Oceans, Volume 131, Issue 1, January 2026.Abstract The deep waters of the Amerasian Basin in the Arctic Ocean are among the most isolated in the modern Arctic Mediterranean Sea (e.g., Schlosser et al., 1997, https://doi.org/10.1016/s0168‐583x(96)00677‐5). In this study, we use a suite of tracers spanning a range of timescales—including chlorofluorocarbons (CFCs), SF6, radiocarbon (14C), and ...
A. Pasqualini +3 more
wiley +1 more source
Journal of Geophysical Research: Planets, Volume 131, Issue 1, January 2026.Abstract Analysis of space weathering features in lunar regolith using transmission electron microscopy (TEM) allows researchers to characterize the surface exposure timescale of individual grains from the Moon. TEM analysis of regolith grains from Apollo 17 scoop samples, collected from five different locations in the Taurus‐Littrow Valley (TLV), each
J. A. McFadden, M. S. Thompson
wiley +1 more source
Short‐Term Effect of Mars‐Like Radiation on Carbon and Oxygen Isotope Compositions of Carbonates
Journal of Geophysical Research: Planets, Volume 131, Issue 1, January 2026.Abstract The stable isotope composition of carbonates records the environmental formation conditions and can indicate potential biosignatures if formed biologically. Martian meteorite carbonates display unusually high δ13C values, not explained using known terrestrial processes.
Nicolas Randazzo +5 more
wiley +1 more source
Journal of Geophysical Research: Planets, Volume 131, Issue 1, January 2026.Abstract We investigated the regolith parent rock (“protolith”) properties of Mare Tranquillitatis and Marius Hills on the Moon, utilizing lunar pit craters (“lua”) to contextualize observations of rock abundance and crater degradation. We discovered a significant difference in underlying materials: the region around the Tranquillitatis lua is ...
E. S. Costello +5 more
wiley +1 more source
Cosmic-Ray Propagation in Light of the Recent Observation of Geminga. [PDF]
Astrophys J, 2019 Jóhannesson G +2 more
europepmc +1 more source
The Chinese Radio Telescope Array for Interplanetary Scintillation Monitoring
Space Weather, Volume 24, Issue 1, January 2026.Abstract Solar flares, coronal mass ejections (CMEs) and enegertic particles, etc., are the driving sources that may cause catastrophic space weathers. It is desirable to obtain information of solar eruptions like flares and CMEs, etc., propagating from the Sun to the near‐Earth space.
Yihua Yan +10 more
wiley +1 more source