Results 41 to 50 of about 1,055 (226)

The electric field in northern England and southern Scotland: implications for geomagnetically induced currents. [PDF]

open access: yes, 2006
Magnetotelluric (MT) data, in the form of MT tensors, are used to estimate directly the size and spatial distribution of the electric field in northern England and southern Scotland with the aim of predicting the flow of geomagnetically induced currents ...
McKay, A. J.   +3 more
core   +1 more source

Research on the three-dimensional electrical structure of the shallow portion of the southern segment of the Red River Fault (Dazhai Village)

open access: yesEarth and Planetary Physics
No earthquake of magnitude six or greater has been recorded historically in the southern segment of the Red River Fault (RRF). This absence constitutes a significant seismic gap, suggesting a risk of future strong earthquakes.
Jiong Zhang   +6 more
doaj   +1 more source

Magnetotelluric sampling theorem

open access: yesEarth, Planets and Space, 2023
Abstract We consider a general case of a magnetotelluric (MT) study to reveal three-dimensional (3D) distribution of the electrical conductivity within the Earth based on measurements of electromagnetic (EM) fields by a two-dimensional (2D) array.
Hisashi Utada   +2 more
openaire   +2 more sources

Evaluating the sustainability of mineral water consumption using multi‐scale hydrogeophysics in Caxambu, Brazil

open access: yesNear Surface Geophysics, Volume 24, Issue 3, Page 234-251, June 2026.
Abstract A better understanding of the near‐surface aquifer system of the Caxambu Water Park, located in the Minas Gerais State, Brazil, has been achieved. The study aimed to identify groundwater reservoirs and flow patterns and contribute to the hydrogeological conceptual model using a multi‐scale geophysical approach.
Emanuele F. La Terra   +5 more
wiley   +1 more source

Efficient two-dimensional magnetotellurics modelling using implicitly restarted Lanczos method [PDF]

open access: yes, 2011
This paper presents an efficient algorithm, FDA2DMT (Free Decay Analysis for 2D Magnetotellurics (MT)), based on eigenmode approach to solve the relevant partial differential equation, for forward computation of two-dimensional (2D) responses.
Sri Niwas,   +2 more
core   +1 more source

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

open access: yesGeophysical 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   +6 more
doaj   +1 more source

Self-potential, geoelectric and magnetotelluric studies in Italian active volcanic areas

open access: yesAnnals of Geophysics, 1997
We present the results of self-potential, geoelectric and magnetotelluric studies in Italian active volcanic areas as essential contributions both to structural modeling and to hazard evaluation. On Mt. Etna and Mt.
A. Siniscalchi   +6 more
doaj   +1 more source

The United States Magnetotelluric Array and the National Impedance Map

open access: yesReviews of Geophysics, Volume 64, Issue 2, June 2026.
Abstract The United States Magnetotelluric Array (USMTArray) data set, collected in the years 2006–2024, consists of more than 1,700 long‐period magnetotelluric stations covering the entirety of the contiguous United States on a quasi‐regular 70 km grid.
Anna Kelbert   +7 more
wiley   +1 more source

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

open access: yes, 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   +17 more
core   +1 more source

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

open access: yes, 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   +7 more
core   +1 more source

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