Results 91 to 100 of about 2,043 (261)

A Strictly Geostrophic Product of Sea‐Surface Velocities From the SWOT Fast‐Sampling Phase

open access: yesGeophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract While geostrophy remains the simplest and most practical balance to extract velocity information from sea‐surface height anomaly (SSHa), confusions remain within the oceanographic community to what extent this balance can be applied to altimetric observations with the launch of the Surface Water and Ocean Topography (SWOT) satellite. Given the
Takaya Uchida   +6 more
wiley   +1 more source

Discrepancy in Satellite Altimetry Products Hinders Robust Retrieval of GIA Signals From Bedrock GNSS Data in Greenland

open access: yesGeophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract Isolating glacial isostatic adjustment (GIA) signals from Global Navigation Satellite System (GNSS) observations of vertical land motion (VLM) in Greenland requires removal of elastic solid Earth response to contemporary ice mass change. This elastic correction depends on ice‐surface elevation changes derived from satellite altimetry and firn ...
Holly Kyeore Han   +6 more
wiley   +1 more source

The 2025 Mw 7.6 Aomori Megathrust Earthquake in Northeast Japan: Failure of a Structurally and Rheologically Bounded Asperity Beneath a Cold Mantle Wedge

open access: yesGeophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract To explore mechanisms of rupture segmentation, we invert coseismic GNSS offsets for the 2025 Mw 7.6 Aomori, Japan earthquake. Our preferred curved‐fault solution images a compact thrust rupture at 25–50 km depth with peak slip ∼2.5 m near 35 km.
Xiaolong Zhang   +6 more
wiley   +1 more source

Small Tropical Islands Also Exposed to Extreme Humid Heat by the End of the Century

open access: yesGeophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract Extreme humid heat is projected to increase markedly by the end of the century, particularly in the tropics. Yet, the case of small islands is ambiguous because the available studies are based on coarse global climate models (GCMs) that ignore them.
Lilian Bald   +5 more
wiley   +1 more source

Double‐ITCZ Bias Reduces Southern Hemisphere Influence on Tropics via Oceanic Pathways

open access: yesGeophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract Many coupled climate models exhibit an Intertropical Convergence Zone (ITCZ) south of the Equator in the annual‐mean tropical Pacific that is more pronounced than observed. This bias impacts winds, wind‐driven ocean circulation, including the meridional subtropical cells, and the zonal distribution of waters supplying the equatorial ...
Cassia Cai   +4 more
wiley   +1 more source

High‐Resolution 3‐D Lithospheric Structure of the Subducting Carnegie Ridge and the Ecuadorian Margin Imaged From Teleseismic Receiver Functions

open access: yesGeophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract The Ecuadorian margin is a forearc‐arc system shaped by oceanic terrane accretion and Carnegie Ridge subduction, yet the accretion mechanism and ridge subduction extent remain poorly constrained. Using teleseismic P‐wave receiver functions from dense seismic arrays, we image velocity discontinuities within the overriding plate and subducting ...
Cong Li   +11 more
wiley   +1 more source

Significant Rural Contributions to Severe Coastal Urban Flooding Through Flow Connectivity

open access: yesGeophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract Coastal cities are increasingly threatened by hurricane‐induced compound flooding. However, the relative contributions of rainfall‐surge interactions and other flood drivers, such as runoff from surrounding rural and local impervious areas, in shaping urban flooding remain unclear.
Donghui Xu   +10 more
wiley   +1 more source

Three Decades of Glacial Changes on the Western Antarctic Peninsula Revealed by Historical Aerial and High‐Resolution Satellite Imagery

open access: yesGeophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract The Antarctic Peninsula has been climate‐sensitive since the mid‐20th century, but long‐term glacier mass balance data are scarce. This study uses historical aerial and high‐resolution satellite imagery to estimate mass changes on the western Antarctic Peninsula (66°S $66{}^{\circ}\mathrm{S}$–68°S $68{}^{\circ}\mathrm{S}$) from 1989 to 2020 ...
Vijaya Kumar Thota   +2 more
wiley   +1 more source

Back‐Propagating Earthquake Rupture Controlled by Fluid‐Modulated Effective Normal Stress

open access: yesGeophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract Back‐propagating earthquake rupture (BPR), where slip migrates opposite to the main rupture direction, is observed in several earthquakes but its origin remains poorly understood, particularly the role of fluids. We use dynamic simulations of frictional sliding coupled with fluids to explore the mechanisms of BPR. Our simulations show that BPR
Jiayi Ye   +2 more
wiley   +1 more source

Satellite geodesy: Data acquisition

open access: yesEos, Transactions American Geophysical Union, 1971
After more than a decade of satellite observations, the data acquired during the past quadrennium have been the catalyst needed to bring about great achievements in satellite geodesy. Unlike earlier solutions our present determinations include very elaborate gravitational models containing hundreds of terms, precise worldwide positions good to ±10 ...
openaire   +1 more source

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