Results 41 to 50 of about 4,195 (236)

Global patterns in Earth's dynamic topography since the Jurassic: the role of subducted slabs [PDF]

open access: yesSolid Earth, 2017
We evaluate the spatial and temporal evolution of Earth's long-wavelength surface dynamic topography since the Jurassic using a series of high-resolution global mantle convection models.
M. Rubey   +6 more
doaj   +1 more source

Simulating the Impacts of Deep Geothermal Development on Shallow Hydrothermal Resources in a Rocky Mountain Rift Valley

open access: yesGroundwater, EarlyView.
Abstract Numerical modeling has been widely used to assess the feasibility of geothermal energy development at sites across the world, but modeling applications simulating the potential impacts on shallow hydrothermal resources and surface water are relatively scarce. In this study, we apply the MODFLOW 6 groundwater energy (GWE) code to simulate fully
Michael J. Rush   +5 more
wiley   +1 more source

Impact-induced changes in source depth and volume of magmatism on Mercury and their observational signatures

open access: yesNature Communications, 2017
Mantle partial melting produced the volcanic crust of Mercury. Here, the authors numerically model the formation of post-impact melt sheets and find that mantle convection was weak at around 3.7–3.8 Ga and that the melt sheets of Caloris and Rembrandt ...
Sebastiano Padovan   +3 more
doaj   +1 more source

On the global geodynamic consequences of different phase boundary morphologies [PDF]

open access: yesSolid Earth
Phase transitions can influence mantle convection patterns, inhibiting or promoting vertical flow. One such transition is the ringwoodite-to-bridgmanite plus periclase transition, which has a negative Clapeyron slope and therefore reduces mantle flow ...
G. T. Morgan   +3 more
doaj   +1 more source

Fault‐Controlled Permeability: A Key Parameter in Geothermal Electricity Production Assessment

open access: yesTerra Nova, EarlyView.
ABSTRACT Geothermal energy is central to the global green energy transition, but its development has long focused on regions with positive thermal anomalies. Through a semi‐quantitative global‐scale review and spatial analysis of 361 geothermal sites, we show that 56.2% of global geothermal electricity production occurs in regions with thermal ...
Vincent Roche, Gaétan Milesi
wiley   +1 more source

pyMelt: An extensible Python engine for mantle melting calculations

open access: yesVolcanica, 2022
Modelling the melting of Earth’s mantle is crucial for understanding the distribution of volcanic activity on Earth and for testing models of mantle convection and mantle lithological heterogeneity.
Simon Matthews   +2 more
doaj   +1 more source

P and S Wave Anisotropic Tomography of the Banda Subduction Zone

open access: yesGeophysical Research Letters, 2023
In subduction zones with slab‐slab interactions, the pattern of mantle convection is very complex and still unclear. In this study, we jointly invert a large number of P and S wave arrival time data of local earthquakes for 3‐D isotropic and anisotropic ...
Yuanyuan Hua, Dapeng Zhao, Yi‐Gang Xu
doaj   +1 more source

Geodynamic Controls on Mantle Differentiation and Preservation of Long‐Term Geochemical Heterogeneity: Focus on the Primitive Undegassed Mantle

open access: yesGeochemistry, Geophysics, Geosystems
The compositional evolution of the Earth's mantle is the result of mantle differentiation and thermal evolution. Partial melting of mantle materials produces geochemical heterogeneities, allows for degassing and depends on the thermal state of the mantle,
Nicolas Récalde   +4 more
doaj   +1 more source

On the Role of Rheological Memory for Convection‐Driven Plate Reorganizations

open access: yesGeophysical Research Letters, 2022
Understanding the temporal variability of plate tectonics is key to unraveling how mantle convection transports heat, and one critical factor for the formation and evolution of plate boundaries is rheological “memory,” that is, the persistence of weak ...
L. Fuchs, T. W. Becker
doaj   +1 more source

Lithospheric Stress Due to Mantle Convection and Mantle Plume over East Africa from GOCE and Seismic Data

open access: yesRemote Sensing, 2023
The Afar and Ethiopian plateaus are in a dynamic uplift due to the mantle plume, therefore, considering the plume effect is necessary for any geophysical investigation including the estimation of lithospheric stress in this area. The Earth gravity models
Andenet A. Gedamu   +2 more
doaj   +1 more source

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