Results 111 to 120 of about 497,770 (261)

Earthquake Ground Motion Cycle Count Datasets

Earthquake Spectra, Volume 42, Issue 4, November 2026.
This study presents a comprehensive set of earthquake ground motion cycle count datasets derived from the NGA‐West2 and NGA‐Sub databases. We applied peak counting, mean‐crossing, level‐crossing, and rainflow cycle counting methods to over 275,000 acceleration time series.
Brian Carlton, Silvia Mazzoni
wiley   +1 more source

Subduction initiation without a prescribed weak zone: What’s gonnahappen?

, 2017
International audienceSubduction initiation is one of the main unclear aspect of plate tectonics. When studying subduction processes,subduction initiation is therefore generally avoided as it constitutes a problem in itself.
Duretz, Thibault, Yamato, Philippe
core   +1 more source

Temporal evolution of mantle wedge oxygen fugacity during subduction initiation

, 2015
Arc basalts have a higher proportion of Fe in an oxidized state (Fe^(3+)) relative to Fe^(2+) compared to mid-oceanic ridge basalts (MORBs), likely because slab-derived fluids oxidize the mantle wedge where subduction zone magmas originate. Yet, the time
Kelley, Katherine A., Brounce, Maryjo, Cottrell, Elizabeth, Reagan, Mark K.   +3 more
core   +1 more source

CyberShake NZ: Probabilistic Seismic Hazard Analysis in New Zealand Using Physics‐Based Ground‐Motion Simulations

Earthquake Spectra, Volume 42, Issue 4, November 2026.
This study presents the computational components and workflow developed to conduct probabilistic seismic hazard analysis (PSHA) in New Zealand (NZ) using physics‐based ground‐motion simulations, referred to as “CyberShake NZ.” Semi‐automated procedures generate multiple realizations of kinematic rupture models, create rupture‐specific velocity models ...
Brendon A. Bradley, Moretza Abbasnejadfard, Karim Tarbali, Robin Lee, Sung Bae, Claudio Schill   +5 more
wiley   +1 more source

Terrane Collision‐Induced Subduction Initiation: Mode Selection and Implications for Western Pacific Subduction System

Geochemistry, Geophysics, Geosystems
In the regime of plate tectonics, the subduction of an oceanic plate generally terminates with the collision and accretion of continental terranes. Then, a new subduction zone may form in the neighboring oceanic plates, which is defined as the terrane ...
Fengyuan Cui, Zhong‐Hai Li
doaj   +1 more source

THE EARLY PRECAMBRIAN EFFECT OF OCEANIC CRUSTAL THICKNESS ON THE SUBDUCTION STYLE OBTAINED BY NUMERICAL PETROLOGICAL AND THERMOMECHANICAL MODELING

Геодинамика и тектонофизика
Eclogitization of magmatic rocks in the oceanic crust plays a key role in the mechanism of the lithospheric plate movement. This effect (as well as its kinetic delay) is particularly important in the Precambrian subduction when oceanic crust could be ...
V. S. Zakharov, A. L. Perchuk, T. V. Gerya   +2 more
doaj   +1 more source

Collocated Geotechnical and Geophysical Test Dataset at Three Sites in Napier, New Zealand

Earthquake Spectra, Volume 42, Issue 4, November 2026.
Reliable assessment of liquefaction hazard, particularly in the context of groundwater fluctuations associated with hydroclimatic changes and variability between liquefaction assessment methods, necessitates supplementary data and advanced site characterization methods.
Aavash Ghimire, Kaleigh M. Yost, Andrew Stolte, Rolando Orense, Alfonso Mejia   +4 more
wiley   +1 more source

The Magnetic Signature of Shear Zones in Marbles and Experimental Simulations

Geoscience Data Journal, Volume 13, Issue 4, October 2026.
This dataset explores how strain, microstructure, texture and magnetic susceptibility interact in natural and experimental shear zones. It includes data from low‐ and high‐temperature marble shear zones and analogue experiments simulating different deformation regimes.
Vladimír Kusbach, Zuzana Roxerová, Matěj Machek, Monika Kučeráková, Stanislav Vratislav, Anna Vávrová, Martin Chadima, Pedro F. Silva, Martin Racek   +8 more
wiley   +1 more source

A Machine‐Learning Surrogate for Differentiable Phase Equilibrium Modeling of Mantle Rocks on a Planetary Scale

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 5, October 2026.
Abstract Modeling processes within Earth's and other planetary bodies' mantle requires constraints from phase equilibrium to infer how changes in phase abundance and composition affect physical properties and geochemical processes. When applying such thermodynamic models on a planetary scale, performance becomes especially crucial.
Philip Hartmeier, Pierre Lanari
wiley   +1 more source

Intraplate Basalts in Eastern Continental China Record the Subduction History of the Pacific Plate

Geophysical Research Letters
To assess whether intraplate magmatism in eastern continental China records the subduction history of the Pacific plate, we plotted elemental compositions of the volcanic rocks in this region since the Early Cretaceous as a function of age.
Pu Sun, Yaoling Niu, Pengyuan Guo, Meng Duan, Xiaohong Wang, Hongmei Gong   +5 more
doaj   +1 more source