Results 51 to 60 of about 1,298 (174)

Deformation Controlled Fluid Mass‐Transfer Processes in Ancient Orogens

Geophysical Research Letters
Despite abundant empirical evidence, the details of coupled deformation and mass transfer processes within a framework of the crustal architecture of ancient orogens remains enigmatic.
G. J. Hill, B. M. Frieman, E. A. Roots, P. E. Wannamaker, V. Maris, R. Haugaard, J. Kamm, R. Klanica, S. Kovacikova, A. J. Calvert, J. A. Craven, R. S. Smith   +11 more
doaj   +1 more source

Constraining Magma Reservoir Conditions by Integrating Thermodynamic Petrological Models and Bulk Resistivity From Magnetotellurics

Geochemistry, Geophysics, Geosystems, 2022
Magnetotelluric (MT) data image the bulk resistivity of the subsurface which can be used to infer magma reservoir conditions beneath volcanoes. The bulk resistivity of magma depends primarily on the melt volume fraction, temperature, and water content ...
Darcy Cordell, Samer Naif, Juliana Troch, Christian Huber   +3 more
doaj   +1 more source

Distinct Groundwater Regimes in West Antarctic Sedimentary Basins Inferred From Magnetotelluric Imaging

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract Subglacial sedimentary basins in Antarctica are hypothesized to modulate ice flow and biogeochemical cycles via groundwater and geothermal feedbacks, yet their properties remain poorly constrained. Here, we present a joint quantitative analysis of new magnetotelluric (MT) data acquired at Thwaites Glacier (TG) and WAIS Divide, alongside legacy
Siobhan F. Killingbeck, Bernd Kulessa, Rebecca Pearce, Alex Brisbourne, Louise Borthwick, Felipe Napoleoni, Sridhar Anandakrishnan, Martyn Unsworth, Atsuhiro Muto   +8 more
wiley   +1 more source

Geophysical Evidence of the Collisional Suture Zone in the Prydz Bay, East Antarctica

Geophysical Research Letters
The location and origin of Neoproterozoic‐Cambrian sutures provide keys to understand the formation and evolution of the supercontinent Gondwana. The Larsemann Hills is located near a major Neoproterozoic‐Cambrian suture zone in the Prydz Belt, but has ...
Lei Fu, Jingxue Guo, Weisen Shen, Xin Wang, Xiaochun Liu, Xiaofei Chen, Xiangyun Hu   +6 more
doaj   +1 more source

Lithospheric Structure of a Transitional Magmatic to Amagmatic Continental Rift System—Insights from Magnetotelluric and Local Tomography Studies in the North Tanzanian Divergence, East African Rift

Geosciences, 2019
Continental break-up is controlled by several parameters and processes (rheology, inherited structures, magmatism, etc). Their impact, chronology and interactions are still poorly known and debated, particularly when rifting interacts with cratons.
Matthieu Plasman, Sophie Hautot, Pascal Tarits, Stéphanie Gautier, Christel Tiberi, Bernard Le Gall, Khalfan Mtelela, Remigius Gama   +7 more
doaj   +1 more source

Estimating the Geoelectric Field and Electric Power Transmission Line Voltage During a Geomagnetic Storm in Alberta, Canada Using Measured Magnetotelluric Impedance Data: The Influence of Three‐Dimensional Electrical Structures in the Lithosphere

Space Weather, 2021
Estimating the effect of geomagnetic disturbances on power grid infrastructure is an important problem since they can induce damaging currents in electric power transmission lines. In this study, an array of magnetotelluric (MT) impedance measurements in
Darcy Cordell, Martyn J. Unsworth, Benjamin Lee, Cedar Hanneson, David K. Milling, Ian R. Mann   +5 more
doaj   +1 more source

Thermal and Structural Signatures Associated With Subducted Seamounts in Hyuga‐nada and Off Cape Muroto, Southwest Japan

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract We present heat flow estimates beneath the forearc slopes off Hyuga‐nada and Cape Muroto in the Nankai Trough, where the Philippine Sea plate subducts beneath the southwestern Japan. Using seismic reflection data, we identified Bottom Simulating Reflectors and derived heat flow ranging from 20 to >140 mW/m2.
Masataka Kinoshita, Kazuya Shiraishi, Yoshitaka Hashimoto, Yohei Hamada, Rie Nakata   +4 more
wiley   +1 more source

Why Does the Broken Hill Deposit Sit in Resistive Crust? Magnetotelluric Evidence for Metamorphic Decoupling of a World‐Class Mineral System

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract The spatial association between electrical conductors and ore deposits underpins the widespread use of magnetotellurics (MT) in mineral exploration, yet not all mineral systems preserve a diagnostic conductive signature. Here, we present a high‐resolution MT study of the region hosting the world‐class Broken Hill Pb‐Zn‐Ag deposit (NSW ...
Yahya AlQahtani, Sinan Özaydın, Vasileios Chatzaras, Patrice F. Rey, Tiago Passos   +4 more
wiley   +1 more source

The University of Adelaide Legacy Magnetotellurics Data

The datasets contain various MT surveys conducted by The University of Adelaide or associated contractors. The datasets were collected under various grants/projects including: AusLAMP AuScope AWAGS AGOS ARC LIEF NCRIS ...

core   +1 more source

Temporal Magnetotellurics Reveals Mechanics of the 2012 Mount Tongariro, NZ, Eruption

, 2020
Monitoring dynamics of volcanic eruptions with geophysics is challenging. In August and November, 2012, two small eruptions from Mount Tongariro provided a unique opportunity to image subsurface changes caused by the eruptions. A detailed magnetotelluric
Erin L. Wallin, Wallin, Erin L., Avram, Yann, Bennie, Stewart L., Jared Peacock, Yasuo Ogawa, Caricchi, Luca, Hill, Graham J., Ogawa, Yasuo, Keys, Harry, Bibby, Hugh M., Harry Keys, Graham J. Hill, Yann Avram, Stewart L. Bennie, Hugh M. Bibby, Luca Caricchi, Peacock, Jared   +17 more
core   +1 more source