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Geophysical Research Letters VOL.53 ISSUE 14 | 26 July 2026
Tectonic Tremor Reveals Slow Deformation Along the Antarctic–South American Subduction Zone
Kellen Moreen Azua Quezada + Sergio Ruiz + Satoshi Ide
The Antarctic–South American subduction zone is among the least explored convergent margins and lacks documented large interplate earthquakes despite ongoing convergence....
Paleoceanography and Paleoclimatology VOL.41 ISSUE 7 | 27 July 2026
A Tropically Hot Late Jurassic North American Sundance Sea: Evidence for the Oxfordian Warm Interval
Rhicert Reynolds + Alina Marca + Geoffrey Nowell ...
The Late Jurassic greenhouse climate was characterized by elevated atmospheric CO2 (pCO2) at 600–1,000 ppm and sea‐surface temperatures substantially warmer than today. These...
Journal of Geophysical Research: Space Physics VOL.131 ISSUE 7 | 20 July 2026
Spatiotemporal Features of Concurrent Storm‐Time Ionospheric Disturbances Over the American Sector During the January 2026 Geomagnetic Storm
Xiongqi Guan + Wang Li + Dongsheng Zhao ...
During the intense geomagnetic storm of 19–21 January 2026, the ionosphere over the American sector exhibited significant disturbances under atypical solar wind driving. Unlike...
Journal of Geophysical Research: Atmospheres VOL.131 ISSUE 11 | 3 June 2026
Dry Versus Humid Heat Seasonality and Drivers in the North American Monsoon Region
Catherine Ivanovich + Benjamin I Cook + Sonali Shukla McDermid
The Southwest United States and northwestern Mexico are well‐known for their extreme dry heat, but these regions also experience humid heat extremes when the North American...
Space Weather VOL.24 ISSUE 7 | 10 July 2026
New Observations of Cosmic Noise Absorption in the South American Magnetic Anomaly (SAMA) Using a Next‐Generation Riometer
Juliano Moro + Angela Santos + Anita Valcorte ...
This study reports the first observations of cosmic noise power (CNP) and cosmic noise absorption (CNA) obtained with a next‐generation riometer installed at the Southern...