Results 51 to 60 of about 610 (134)

The birth of a volcano: A nonlinear convective model for rock melting at the asthenosphere—Lithosphere boundary

Applications in Engineering Science
The investigation of the physical processes determining the melting of the lithospheric rocks is of crucial importance for understanding the volcanic dynamics and its related consequences.
Carmelo Filippo Munafò, Cataldo Godano, Francesco Oliveri   +2 more
doaj   +1 more source

Multi‐Scale Electrical Conductivity Model of the Contiguous United States

Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract The completion of the Magnetotelluric (MT) USArray across the contiguous US enables continental‐scale 3‐D imaging of the asthenosphere‐lithosphere electrical structure. We present a novel 3‐D model of the contiguous United States (MECMUS), derived from a single inversion of the now‐completed USMTArray data set.
Federico D. Munch, Alexander Grayver
wiley   +1 more source

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

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

Elevated Asthenospheric Temperature Driving the Partial Melting of Enriched Lithospheric Mantle Feeding the DM‐EM1 Mixing‐Type Magmatism of the Jingpohu Volcano in Eastern NE China: Evidence From Teleseismic P‐Wave Attenuation

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract The origin of a binary‐mixing of DM and EM1 sources for the Cenozoic intraplate volcanism in eastern Northeast China is yet unclear. Seismic attenuation imaging is a tool that can shed light on this question. Here we present the first map of teleseismic P‐wave attenuation across Northeast China.
Hanlin Liu, Qingju Wu, Maximiliano Bezada, Shunping Pei, Joseph S. Byrnes, Wei Liu   +5 more
wiley   +1 more source

Self‐Consistent Models of Earth's Mantle and Core From Long‐Period Seismic and Tidal Constraints

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 2, February 2026.
Abstract Here we illustrate the use of parameterized models to address fundamental questions about Earth's mantle and core structure. For this, we invert a large set of normal‐mode center frequencies and quality (attenuation) factors, along with astronomic‐geodetic data, for the radial anelastic seismic structure of the Earth.
F. D. Munch, J. Kemper, A. Khan, G. Helffrich, D. Giardini   +4 more
wiley   +1 more source

How Sediment Supply, Sea‐Level, and Glacial Isostatic Oscillations Drive Alluvial River Long‐Profile Evolution and Terrace Formation

AGU Advances, Volume 7, Issue 1, February 2026.
Abstract For over a century, alluvial river terraces have been used as archives of tectonic deformation or changes in water discharge, sediment supply, and sea level. Despite this long history, such efforts remain challenging: using terraces as deformation markers requires knowledge of their initial geometry, and most attempts to attribute terrace ...
A. Ruby, F. McNab, T. F. Schildgen, A. D. Wickert, V. M. Fernandes   +4 more
wiley   +1 more source

Lithospheric Delamination Below the North American Midcontinent Ceased Subsidence in Cratonic Basins

AGU Advances, Volume 7, Issue 1, February 2026.
Abstract Cratonic lithospheres carry a long history of tectonic modifications that result in heterogeneous structures, as revealed by an increasing number of geophysical observations. The existence of cratonic basins indicates protracted periods of tectonic modification, causing subsidence within global continental interiors.
Xiaotao Yang, Lihang Peng, Andrea Stevens Goddard, Lijun Liu   +3 more
wiley   +1 more source

A Magma Accretion Model for the Formation of Oceanic Lithosphere: Implications for Global Heat Loss

International Journal of Geophysics, 2010
A magma accretion model of oceanic lithosphere is proposed and its implications for understanding its thermal field examined. The new model (designated Variable Basal Accretion—VBA) assumes existence of lateral variations in magma accretion rates and ...
Valiya M. Hamza, Roberto R. Cardoso, Carlos H. Alexandrino   +2 more
doaj   +1 more source

Distribution of Bouguer gravity anomaly and crust and upper mantle in the Antarctic region

Antarctic Record, 1986
Bouguer gravity anomaly south of 45°S was derived from the newly provided data of free-air anomaly and topography, and its implications in the crust and upper mantle structure of the land and its marginal ocean area were discussed from the viewpoint of ...
Takeshi Matsumoto, Jiro Segawa, Katsutada Kaminuma   +2 more
doaj   +1 more source