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Pattern of Inner‐Core Differential Rotation From Long‐Term Earthquake Sequences and USArray Network

Geophysical Research Letters, Volume 53, Issue 1, 16 January 2026.
Abstract How the differential rotation of the Earth's inner core (IC) has changed over time provides insights into the dynamics of the Earth's interior. Analyses of repeating earthquakes (doublets) have yielded different models. Here we present an event‐based investigation using individual events from long‐term earthquake sequences, which improves ...
Kaixin Wu, Xiaodong Song, Yi Yang
wiley +1 more source

Deformation of the Upper Oceanic Crust in the Outer Rise of the Sumatra Subduction Zone: Insights From P‐ and Doubly Converted S‐Wave Arrivals on Downward Continued Streamer Data

Geophysical Research Letters, Volume 53, Issue 1, 16 January 2026.
Abstract The structure and properties of mature upper oceanic plates may evolve through mechanisms such as magmatism, hydrothermal circulation, and faulting. However, high‐resolution constraints, especially those involving both P‐ and S‐waves, remain scarce, limiting our ability to detect these processes and assess their impacts on crustal properties ...
Anne Bécel +3 more
wiley +1 more source

Reproducing GRACE Total Water Storage Change at Finer Spatial Scales

Geophysical Research Letters, Volume 53, Issue 1, 16 January 2026.
Abstract The Gravity Recovery and Climate Experiment (GRACE) satellite mission provides accurate observations of terrestrial water storage anomalies (TWSA), but their coarse spatial resolution (∼3°) limits sub‐regional‐scale applications. Existing downscaling methods rely on high‐resolution hydrometeorological inputs, which often underestimate the full
Fupeng Li, Jürgen Kusche
wiley +1 more source

Velocity dispersion due to anelasticity; implications for seismology and mantle composition [PDF]