Results 71 to 80 of about 1,298 (174)

High Melt Fraction Induced by the Dehydration Melting Near the 410‐km Discontinuity

Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract The water‐rich mantle transition zone, coupled with the low water storage capacity of the upper mantle, suggests that dehydration melting occurs just above the mantle transition zone near the 410‐km discontinuity. However, the melt fraction produced by the dehydration melting process remains poorly constrained.
Juan Chen, Hongyu Yu, Suyu Fu, Fang Xu, Baohua Zhang, Hongzhan Fei   +5 more
wiley   +1 more source

Identification and parameter estimation for electrical anisotropy in two-dimensional magnetotelluric models

Frontiers in Earth Science
When the subsurface media contain electrical anisotropic structure, magnetotelluric isotropic inversion fails to recover the electrical anisotropic structure and may distort the image of isotropic structures. Besides, due to the diversity and uncertainty
Xiaojie Ji, Zidong Xu, Zejiao Huang, Wei Zhao, Ying Liu   +4 more
doaj   +1 more source

Seismic Radial Anisotropy of the Southern Tibetan Rifts From Ambient Noise Adjoint Tomography: Basal Shear and Localized Crustal Weak Zones Promote Rifting

Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract North–south‐trending rifts in southern Tibet record E–W extension within the Tibetan Plateau, closely linked to high gravitational potential energy from collisional thickening and northward underthrusting of the Indian lower crust. To reveal how basal shear is transmitted upward and controls rifting, we use ambient noise adjoint tomography ...
Taozhi Wang, Zhen Guo, Yanbin Wang, Lipeng He, Xiaobo Tian   +4 more
wiley   +1 more source

Long‐Term Stability, Noise, and Temperature Sensitivity of Modular Porous‐Pot Electrodes Designed for Geophysical and Geotechnical Applications, and Details of Their Construction

Earth and Space Science
Electrodes are used to measure a potential difference between two points. In geophysical and geotechnical applications they are often in the form of non‐polarizable porous‐pot electrodes.
Matthew J. Comeau, Stefan Ueding, Michael Becken   +2 more
doaj   +1 more source

Seismic Exploration for Magmatic Brine Lenses: An Example From Soufrière Hills Volcano, Montserrat

Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract The majority of metallic ore deposits are related to processes associated with ancient or modern volcanic systems. Beyond geothermal energy production, volcanoes also represent a potential resource of critical metals, including those required for carbon‐neutral technologies. Geothermal metals occur in subsurface fluid reservoirs fed by surface
Petros Bogiatzis, J.‐Michael Kendall, Jonathan D. Blundy, Graham A. Ryan, Alan F. Baird   +4 more
wiley   +1 more source

Magnetotellurics (MT) and Gravity Study of a Possible Active Fault in Southern Garut, West Java, Indonesia

, 2023
In recent years, dozen low-intensity earthquakes occurred in southern Garut, West Java Indonesia; two of them were reported destructive. However, those shallow earthquake clusters are hardly associated with well-known active faults in the area. Hence, we
null Warsa, Lina Handayani, M. Ma'ruf Mukti, Hendra Grandis, Edy Wijanarko, Ilham Arisbaya, Prihadi Sumintadireja, Yayat Sudrajat   +7 more
core   +1 more source

Hydrogen‐Enhanced Grain Boundary Conductivity Explains High‐Conductivity Anomalies in Trans‐Lithospheric Shear Zones

Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.
Abstract Magnetotelluric (MT) surveys reveal high electrical conductivity anomalies along major trans‐lithospheric shear zones. Given that trans‐lithospheric shear zones are proposed conduits for deep‐Earth volatiles, we employ molecular dynamics simulations to quantify H+ diffusivity and electrical conductivity at olivine grain boundaries.
Haoqing Wang, Kui Han, Chuanyu Zhang, Xiaofeng Tian, Xuben Wang, Simon Martin Clark   +5 more
wiley   +1 more source

Constraining the Permeability and Outer‐Rise Hydration at the Central America Margin

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 8, August 2026.
Abstract Subduction zones are important drivers of Earth's geochemical evolution; the presence of water within the subduction system has substantial implications for geohazards, including the style of seismicity and the volume of magma generated at arc volcanoes.
D. Douglas, B. T. Aagaard, J. Naliboff, S. Naif   +3 more
wiley   +1 more source

Magnetotellurics as a multiscale geophysical exploration method

, 2016
Magnetotellurics (MT) is a geophysical method based on the use of natural electromagnetic signals to define subsurface electrical resistivity structure through electromagnetic induction.
CARBONARI, ROLANDO, DI MAIO, ROSA, D’Auria, L., Petrillo, Z.   +3 more
core  

Multi-component ground-based observation of ULF waves: goals and methods

Annals of Geophysics, 1998
A revival of the combined magnetic and telluric electric measurements at magnetic observatories is suggested.A number of problems, where such observations might be very helpful, are outlined: 1) the account for the resonance structure of the ULF field ...
E. N. Fedorov, M. De Lauretis, S. Anisimov, M. Vellante, V. A. Pilipenko, U. Villante   +5 more
doaj   +1 more source