Results 61 to 70 of about 2,742 (208)

Three‐Dimensional Electrical Resistivity Characterization of Mountain Pass, California and Surrounding Region

open access: yesGeochemistry, Geophysics, Geosystems, 2021
The Sulphide Queen carbonatite deposit at Mountain Pass in southeast California is a world class rare earth element (REE) resource. This study images electrical resistivity structure of the REE deposit and surrounding area to characterize resources under
J. R. Peacock, K. M. Denton, D. A. Ponce
doaj   +1 more source

Conductive structures around Las Cañadas caldera, Tenerife (Canary Islands, Spain) : a structural control [PDF]

open access: yes, 2010
External eastern areas of the Las Cañadas caldera (LCC) of Tenerife (Canary Islands, Spain) have been investigated using the audiomagnetotelluric (AMT) method with the aim to characterize the physical rock properties at shallow depth and the thickness of
Coppo, N.   +3 more
core   +3 more sources

The Gannon Storm's Impact on Electric and Magnetic Fields in Italy: A Regional Perspective

open access: yesSpace Weather, Volume 24, Issue 1, January 2026.
Abstract The intense May 2024 geomagnetic storm provided an opportunity to conduct the first analysis of geoelectric hazards in Italy. Data from three geomagnetic observatories and a magnetotelluric station were analyzed to examine the spatiotemporal evolution of storm‐induced variations.
Giulia Pignatiello   +5 more
wiley   +1 more source

Stratigraphic Model of East Biak Based on Magnetotelluric Data

open access: yesJournal of Mathematical and Fundamental Sciences, 2020
Biak Island is thought to have originated from the Australian Continental passive margin in the Mesozoic. This passive margin underwent tectonic collision to form the bedrock of Biak Island during the Paleogene.
Alviyanda Alviyanda   +2 more
doaj   +1 more source

The Relationship Between the Magnetometer Data Derived GIC Index and Measured GIC in High Voltage Transformers in Australia

open access: yesSpace Weather, Volume 24, Issue 1, January 2026.
Abstract Geomagnetically induced currents (GICs) are telluric currents driven by space weather that can adversely impact high voltage transformers in electricity supply networks. It is often difficult to obtain transformer GIC data so ground based magnetometer data may be used to estimate the transformer GIC via complex modeling of both network and ...
C. L. Waters, R. A. Marshall
wiley   +1 more source

Three‐Dimensional Resistivity Structure of Iwo‐Yama Volcano, Kirishima Volcanic Complex, Japan: Relationship to Shallow Seismicity, Surface Uplift, and a Small Phreatic Eruption

open access: yesGeophysical Research Letters, 2018
Iwo‐yama volcano, part of the Kirishima Volcanic Complex, has recently shown signs of unrest. We conducted a hypocenter relocation of shallow earthquakes and broadband magnetotelluric measurements around Iwo‐yama.
K. Tsukamoto   +8 more
doaj   +1 more source

Beyond magnetotelluric decomposition: Induction, current channeling, and magnetotelluric phases over 90° [PDF]

open access: yesJournal of Geophysical Research: Solid Earth, 2003
This paper presents a method to examine strong current channeling affecting the magnetotelluric (MT) impedances, going beyond existing tensor decomposition schemes. The method allows recognition of elongated conductors in the crust and is also useful for a qualitative recognition of general three‐dimensional (3‐D) high‐conductivity anomalies.
Lezaeta, P., Haak, V.
openaire   +4 more sources

Magnetotelluric Imaging of a Magma Plumbing System From the Asthenosphere to Crust Beneath the Newer Volcanic Province, Australia

open access: yesGeophysical Research Letters, Volume 52, Issue 24, 28 December 2025.
Abstract The Newer Volcanic Province (NVP) in southeastern Australia is a classic example of continental intraplate volcanism located far from a plate boundary, yet the configuration of its magma plumbing system remains unclear. Using three‐dimensional (3D) magnetotelluric (MT) inversion, we imaged a vertically continuous, trans‐lithospheric conductive
Xinpeng Ma   +7 more
wiley   +1 more source

Magnetotelluric Image of Transcrustal Magmatic System Beneath the Tulu Moye Geothermal Prospect in the Ethiopian Rift

open access: yesGeophysical Research Letters, 2018
Continental rifting is initiated by a dynamic interplay between tectonic stretching and mantle upwelling. Decompression melting assists continental breakup through lithospheric weakening and enforces upflow of melt to the Earth's surface.
Friedemann Samrock   +3 more
doaj   +1 more source

Audiomagnetotelluric investigation of seawater intrusion using 2-D inversion of invariant impedances [PDF]

open access: yes, 2010
An audio-magnetotelluric survey was conducted to estimate the extension of the seawater intrusion in a coastal aquifer, in Ensenada, Baja California, México. The survey consisted of 134 closely spaced sites along three profiles 5 to 6 km long.
Luján, Violeta, Romo, José Manuel
core   +3 more sources

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