Results 71 to 80 of about 2,132,735 (177)

Seismic Imaging of Upper Mantle Serpentinization and Ponded Melt at the Boundary of the Lithosphere and Asthenosphere in the Central Mariana Subduction Zone

Geophysical Research Letters
The Mariana subduction zone, with its simple oceanic structure and water‐rich environment, provides a natural laboratory for studying mantle hydration and the Lithosphere–Asthenosphere Boundary (LAB).
Jia‐Hui Zhang, Xin Wang, Chen Cai, Yuan Wang, Jianfeng Yang, Xingguo Huang   +5 more
doaj   +1 more source

Isogeometric analysis of the lithosphere under topographic loading: Igalith v1.0.0 [PDF]

Geoscientific Model Development
This paper presents methods from isogeometric finite-element analysis for numerically solving problems in geoscience involving partial differential equations.
R. Rosandi, Y. Rosandi, B. Simeon
doaj   +1 more source

The Role of Tectonic Plate Thickness and Mantle Conductance in Determining Regional Vulnerability to Extreme Space Weather Events: Possible Enhancement of Magnetic Source Fields by Secondary Induction in the Asthenosphere

Space Weather, 2020
During magnetic storms, solar‐magnetosphere‐ionosphere‐Earth interactions give rise to geomagnetically induced currents (GICs) in man‐made technological conductors such as power grids, gas pipelines, and railway networks with potentially damaging ...
Fiona Simpson, Karsten Bahr
doaj   +1 more source

Seafloor Displacements Across the Mid‐Ocean Ridge Eruption Cycle Modulated by Mush Zone Viscosity

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 8, August 2026.
Abstract Mid‐ocean ridges (MORs) are active volcanic systems where axial magma lenses (AMLs) are replenished on decadal time scales, enabling frequent dike intrusions. The associated seafloor deformation, however, remains scarcely understood. Here we assess this deformation by simulating cycles of steady AML inflation followed by instantaneous dike ...
H. Boulze, J.‐A. Olive
wiley   +1 more source

The petrological control on the lithosphere-asthenosphere boundary (LAB) beneath ocean basins

Earth-Science Reviews, 2018
The plate tectonics theory established ~ 50 years ago has formed a solid framework for understanding how the earth works on all scales. In this theory, movement of the tectonic plates relative to the subjacent asthenosphere is one of the fundamental ...
Y. Niu, D. Green
semanticscholar   +1 more source

A Machine Learning‐Based Geothermal Gradient Framework for Constraining Lithospheric Biomass

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 4, August 2026.
Abstract Earth's deep subsurface hosts a large microbial biosphere, but the magnitude of lithospheric biomass remains poorly constrained due to sparse observations and uncertain thermal limits. Here, we present a physically constrained global assessment of the continental and oceanic lithospheric biomass shallower than the 122°C isotherm.
Wenyu Zhao, Harrison B. Smith, J. ZhangZhou   +2 more
wiley   +1 more source

Post‐Collisional Evolution in the Southern Variscan Belt: Insights From Numerical Modeling of the Valpelline Series (Western Alps)

Tectonics, Volume 45, Issue 8, August 2026.
Abstract The post‐collisional evolution of orogenic belts is commonly marked by high‐temperature metamorphism and widespread magmatism, yet the processes linking collision to post‐collisional dynamics remain difficult to reconstruct due to limited exposure of deep‐crustal levels and uncertainties in the determination of pressure‐temperature conditions ...
Alessandro Regorda, Marco Filippi, Manuel Roda, Fabiola Caso, Federico Farina, Chiara Benedetta Piloni, Michele Zucali   +6 more
wiley   +1 more source

Tectonic Tremor Reveals Slow Deformation Along the Antarctic–South American Subduction Zone

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract The Antarctic–South American subduction zone is among the least explored convergent margins and lacks documented large interplate earthquakes despite ongoing convergence. Here we report the discovery of tectonic tremor along this plate boundary using continuous seismic data.
K. Azúa, S. Ruiz, S. Ide
wiley   +1 more source

Thermal nature and resolution of the lithosphere–asthenosphere boundary under the Pacific from surface waves

Geophysical Journal International, 2018
It is strongly debated whether the interface between the lithosphere and underlying as- thenosphere is a temperature-dependent rheological transition, as expected in a thermal convection system, or additionally affected by the presence of melts and/or ...
C. Beghein, Z. Xing, S. Goes
semanticscholar   +1 more source

The correlation between lithosphere-asthenosphere boundary structure and plate motion velocity

地球与行星物理论评
The lithosphere-asthenosphere boundary (LAB), defined seismologically as the interface separating the high-velocity lithosphere from the low-velocity asthenosphere, records key information about the distinct physical and chemical properties of these two ...
Ziyu Yang, Ling Chen, Tao Xu, Haiqiang Lan   +3 more
doaj   +1 more source