Results 21 to 30 of about 772 (68)

Reconstruction of Core‐Surface Flows During the Last 3,300 Years

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 3, -Not available-.
Abstract Understanding the Earth's magnetic field evolution requires examining the fluid flow at the core‐mantle boundary that drives the changes over different timescales. The inversion process to derive core‐surface flow velocities from secular variation data encounters non‐uniqueness issues, necessitating a priori assumptions that yield different ...
Pablo Rivera, F. J. Pavón‐Carrasco, M. L. Osete   +2 more
wiley   +1 more source

Archeointensity Database and Geomagnetic Field Reference Curves for South America Over the Past 5 Millennia

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 3, March 2026.
Abstract The study of variations in geomagnetic field intensity over time and space is crucial to understand the evolution of the geodynamo and its interactions with the Earth's surface. In this work, we introduce the SAGEOMAG (South America GEOMAGnetic) database, a comprehensive and updated repository of geomagnetic field intensity records derived ...
Victor J. O. Marum, Filipe Terra‐Nova, Gelvam A. Hartmann, Erwan Thébault, Plinio Jaqueto, Wilbor Poletti, Ricardo I. F. Trindade   +6 more
wiley   +1 more source

The Asymmetric Hydrodynamic Structure of a Wind‐Dominated River Plume

Journal of Geophysical Research: Oceans, Volume 131, Issue 2, February 2026.
Abstract This study investigates the velocity and salinity structure of the large surface‐attached, low‐latitude, and microtidal plume of the Magdalena River (southern Caribbean Sea) during a period of high freshwater discharge and variable wind conditions. The plume was analyzed through observations at multiple transects along, across, and diagonal to
Ó. Álvarez‐Silva, M. Becker, R. P. Flores, F. Arévalo, P. Holtermann, Y. Cardona, C. Winter   +6 more
wiley   +1 more source

Transient shifts in Bering Sea shelf phytoplankton size structure in response to wind‐induced mixing

Limnology and Oceanography Letters, Volume 11, Issue 1, January 2026.
Abstract Phytoplankton community size structure is a key attribute that influences pelagic trophic energy transfer and the vertical flux of organic matter to benthic food webs. To capture the ephemeral scale of phytoplankton population size spectra we developed an approach, combining long‐term survey datasets, machine learning modeling and 3 yr of high‐
Jens M. Nielsen, Michael W. Lomas, Lisa B. Eisner, Noel A. Pelland, Sun B. Hospital, Priscila K. Lange, Calvin W. Mordy, Jeanette C. Gann, Phyllis J. Stabeno, Heather M. Tabisola, Margaret E. Sullivan   +10 more
wiley   +1 more source

Upper Cretaceous Seismic Stratigraphy and Magma‐Enhanced Petroleum System of the Offshore Indus Basin

Basin Research, Volume 38, Issue 1, January–February 2026.
Seismic data reveals Cretaceous stratigraphy and hydrocarbon potential beneath volcanic rocks in Offshore Indus Basin, where magmatic intrusions enhanced source rock maturation and hydrocarbon generation by 8%–18% during favourable timing coinciding with Deccan volcanism.
Yasir Shahzad, Ines Pereira, Ricardo Pereira, Rui Pena dos Reis   +3 more
wiley   +1 more source

Biome Specialisation in Squirrels: Phylogenetic and Geographic Patterns

Journal of Biogeography, Volume 53, Issue 1, January 2026.
ABSTRACT Aim Habitat breadth shapes species' responses to environmental change and influences large‐scale biodiversity patterns. According to Vrba's resource‐use hypothesis, biome specialists (inhabiting a single biome) exhibit higher speciation rates than generalists due to increased population isolation during habitat fragmentation, generally ...
Iris Menéndez, Ana Rosa Gómez Cano, Juan L. Cantalapiedra, Fernando Blanco, Sara Gamboa, Jonathan S. Pelegrin, Emilia Galli, Álvaro Quesada, María Ángeles Álvarez‐Sierra, Manuel Hernández Fernández   +9 more
wiley   +1 more source

La Niña Obscures the North Atlantic Response to Sudden Stratospheric Warmings in C3S Seasonal Forecasts

Geophysical Research Letters, Volume 52, Issue 24, 28 December 2025.
Abstract Sudden stratospheric warmings (SSWs) can alter the North Atlantic circulation on subseasonal‐to‐seasonal timescales, typically leading to an equatorward shift of the eddy‐driven jet. However, this response is highly variable and can be modulated by other sources of climate variability.
Verónica Martínez‐Andradas, Alvaro de la Cámara, Pablo Zurita‐Gotor, Amy H. Butler   +3 more
wiley   +1 more source

Interaction Between Traditional Fishers and the Neotropical Otter Lontra longicaudis (Olfers, 1818) in a Brazilian Amazon Estuary

Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 35, Issue 12, December 2025.
ABSTRACT The neotropical otter Lontra longicaudis (Olfers, 1818) is a semi‐aquatic carnivore from the Mustelidae family with a piscivorous habit that interacts with riverine populations because of fishing resources, and this relationship is often negative, especially in the Amazon where fishing represents an important activity for several communities ...
Dayse Souza Marques, Izabelle da Silva Mendes, César França Braga, Renata Emin‐Lima, Thuareag Monteiro Trindade dos Santos   +4 more
wiley   +1 more source

Crustal structure of La Palma Island inferred from 3D aeromagnetic modelling. [PDF]

Sci Rep
Romero-Toribio MC, Martín-Hernández F, Ledo J.   +2 more
europepmc   +1 more source

Oropouche fever outbreak in Brazil: Key factors behind the largest epidemic in history. [PDF]

PLoS One
Lorenz C, de Azevedo TS, Sallum MAM, Chiaravalloti-Neto F.   +3 more
europepmc   +1 more source