Results 51 to 60 of about 1,055 (226)

Groundwater Circulation Within the Mountain Block: Combining Flow and Transport Models With Magnetotelluric Observations to Untangle Its Nested Nature

Water Resources Research
Mountains are vital water sources for humans and ecosystems, continuously replenishing lowland aquifers through surface runoff and mountain recharge.
D. Gonzalez‐Duque, J. D. Gomez‐Velez, M. A. Person, S. Kelley, K. Key, D. Lucero   +5 more
doaj   +1 more source

Resistivity and heterogeneity of Earth crust in an active tectonic region, Southern Tuscany (Italy)

Annals of Geophysics, 2004
Southern Tuscany, belonging to the inner zone of the Northern Apennines, Italy, is an ideal laboratory for observing the physical features of the lithosphere and their evolution in tectonically active regions.
A. Manzella
doaj   +1 more source

Determining the Character of Subglacial Sediments in the Ice‐Bedrock Interface Zone of Antarctica Using Horizontal‐to‐Vertical Spectral Ratios (HVSRs) of Seismic Ambient Noise

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 6, June 2026.
Abstract Interactions between the Antarctic Ice Sheet and the underlying solid Earth occur within the ice‐bedrock interface zone (IBIZ), containing structures of sediments and rocks that strongly influence ice sheet dynamics. Existing insights into the Antarctic IBIZ come primarily from interpretations of airborne geophysical data and active seismic ...
I. D. Kelly, A. M. Reading, T. Stål, B. Kulessa, A. García‐Jerez, J. Piña‐Flores, E. Paolucci, A. Tanzini, R. J. Turner, J. C. Magyar, A. P. Bassom   +10 more
wiley   +1 more source

Arc Heat Flow and Magmatic Heat Budgets

Reviews of Geophysics, Volume 64, Issue 2, June 2026.
Abstract We evaluate hydrothermal heat loss from 11 volcanic‐arc segments (∼6,000 km of arc length, ∼10% of the global total), motivated by the observation that much magmatic heat ultimately crosses the land surface as heated aqueous fluid. Heat loss takes place by volcanic eruption, geothermal heat conduction to the surface, fumarolic (vapor ...
S. E. Ingebritsen, Kazuki Sawayama, Yuri Taran, Giovanni Chiodini, Tsuneomi Kagiyama, Hiroshi Shinohara, Julie V. Rowland, Benjamin A. Black   +7 more
wiley   +1 more source

Quality Control of Magnetotelluric Impedance Inversion via Self‐Supervised Learning Based on Data Continuity of Nyquist Diagrams

Geophysical Prospecting, Volume 74, Issue 5, June 2026.
ABSTRACT Magnetotelluric (MT) data are often contaminated by electromagnetic (EM) noise, making quality control (QC) essential for reliable inversion. Conventional manual time‐domain QC processes are labour‐intensive, and some noise inevitably remains after processing, necessitating complementary processing in the frequency domain to address the ...
Hanjoon Park, Hee June Lee, Jun‐Woo Lee, Janghwan Uhm, Junyeong Heo, Dong‐Joo Min   +5 more
wiley   +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

Temporal Change in Resistivity Structure Before and After the 2018 Small Phreatic Eruption Iwo‐Yama Volcano, Kirishima Volcanic Complex, Japan

Geophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract A small phreatic eruption occurred on April 2018 Iwo‐yama, Kirishima volcanic complex, Japan. We estimated the change in the subsurface resistivity structure before and after the phreatic eruption by repeated magnetotelluric (MT) measurements. A substantial decrease in resistivity was determined in the zone from the surface down to a depth of ...
K. Aizawa, N. Matsushima, Y. Matsunaga
wiley   +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

Crustal Responses to the Destruction of Continental Lithosphere: Insights From Radial Anisotropy of the Tanlu Fault Zone, Eastern China

Geophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract Since the Mesozoic, much of the eastern China lithosphere was removed through thermo‐mechanical erosion and delamination, yet the effects on the overlying crust remain unclear. The Tanlu Fault Zone (TLFZ), the region's largest lithosphere‐scale weakness, offers a natural laboratory to assess crustal responses to lithospheric destruction.
Yuqi Zhu, Zhouchuan Huang, Frederik Tilmann, Kuan‐Yu Ke, Xinglu Wang, Cong Ji   +5 more
wiley   +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