Results 141 to 150 of about 58,838 (264)
Adsorption Preceding Wetting Front Controls Seismic Velocity
Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.Abstract Rock elasticity varies with both humidity and water saturation, yet their combined effects remain poorly understood, although in nature vapor adsorption and liquid infiltration occur simultaneously. Here, we present experimental data of P‐wave velocity and volume expansion in a free‐standing sandstone subject to progressive wetting.
Rui Wu +11 more
wiley +1 more source
Seismology on Venus with infrasound observations from balloon and orbit [PDF]
, 2020 Matoza, Robin Samuel
core
Trench‐Breaching Rupture of the 2025 Mw 8.8 Kamchatka Earthquake and How It Repeats the 1952 Event
Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.Abstract The 29 July 2025 Mw 8.8 Kamchatka earthquake generated a trans‐Pacific tsunami. The hypocenter was nearly at the same location as the 1952 great earthquake (Mw 8.8–9.0). Determining whether the 2025 rupture reached the trench and how it relates to the 1952 event is crucial for understanding slip behavior along the Kamchatka subduction zone. We
Yifan Zhu, Chao An, Han Yue
wiley +1 more source
Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.Abstract The July 2025 Kamchatka earthquake (Mw 8.8) generated Pacific‐wide tsunamis. Inversion of 40 DART bottom pressure records revealed a large (∼9 m) slip at 200–400 km southwest of the epicenter. This model reproduces the local geodetic data, and is similar to other finite fault models based on teleseismic and geodetic data. Inversion of the tide
Yushiro Fujii, Kenji Satake
wiley +1 more source
Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.Abstract Understanding the cause of spatial variations in seismicity is crucial for comprehending the physics governing earthquake activity. Off Iwate, in the northern Japan Trench subduction zone, the plate boundary can be divided into three distinct zones based on depth‐dependent slip regimes: the slow earthquake, asperity, and stable creeping zones.
Yuta Ito +4 more
wiley +1 more source
Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.Abstract We present a high‐resolution local earthquake tomography model that constrains the distribution of hydration and dehydration processes within the subducting Nazca slab beneath Northern Chile. We image a distinct downdip transition from high Vp/Vs (∼1.75) over low Vp/Vs (∼1.65) to a homogeneously high Vp/Vs slab at depths of ≥ ${\ge} $85 km ...
Nazia Hassan, Christian Sippl
wiley +1 more source
Hydraulic Control of the Foreshocks and Mainshock of the 2017 Valparaíso, Chile, Earthquake
Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.Abstract Slow‐slip events (SSE) are a key mode of aseismic deformation and can enhance fault permeability through fracturing, enabling fluid migration from the overpressured oceanic crust to the plate interface. Whether the resulting poroelastic stress changes promote seismicity and larger megathrust events, however, remains unclear.
Carlos Peña +4 more
wiley +1 more source
High-enthalpy Larderello geothermal system, Italy, powered by thousands of cubic kilometres of mid-crustal magma. [PDF]
Commun Earth EnvironLupi M +17 more
europepmc +1 more source
Impact of Mantle Velocity Uncertainty on Receiver‐Function Imaging of the Transition Zone
Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.Abstract Seismological estimates of the 400‐km and 670‐km mantle discontinuities (d400 and d670) are crucial for understanding the thermochemical structure and dynamics of the mantle transition zone (MTZ). However, artifacts from using ray theory and uncertainties in mantle velocity structure can affect topographic mapping of these boundaries.
Carlos A. M. Chaves +2 more
wiley +1 more source