Results 81 to 90 of about 2,756 (207)

Magnetotelluric Impedance Tensor Tools (MITT) [PDF]

open access: yes, 2015
Podeu consultar la darrera versió a: http://diposit.ub.edu/dspace/handle/2445/124276This manual is a first draft to guide the practitioner through MITT program.
Pous, Jaume, Romero Ruiz, Ivan
core  

Magnetotelluric imaging of anisotropic crust near Fort McMurray, Alberta: implications for engineered geothermal system development

open access: yes, 2016
Viability for the development of an engineered geothermal system (EGS) in the oilsands region near Fort McMurray, Alberta, is investigated by studying the structure of the Precambrian basement rocks with magnetotellurics (MT).
Liddell, M, Pek, J, Unsworth, MJ
core   +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

Comparison between geoelectric and electromagnetic sounding responses in volcanic areas

open access: yesAnnals of Geophysics, 1997
The structure of active and inactive volcanoes can be explored with electric and electromagnetic surveys. We test the actual applicability of prospecting methods that employ both stationary and time-varying fields, using mathematical models both for ...
L. Alfano, M. Giudici
doaj   +1 more source

Sensitivity analysis of marine Controlled-Source Electromagnetic data [PDF]

open access: yes, 2017
Electromagnetic sounding methods represent one of the few geophysical techniques that can provide information about the state and the properties of deep continental crust and upper mantle.
Bernasconi, Giancarlo   +3 more
core   +1 more source

The electrical structure of the central Pacific upper mantle constrained by the NoMelt experiment

open access: yesGeochemistry, Geophysics, Geosystems, 2015
The NoMelt experiment imaged the mantle beneath 70 Ma Pacific seafloor with the aim of understanding the transition from the lithosphere to the underlying convecting asthenosphere.
Emily Sarafian   +7 more
doaj   +1 more source

3-D analysis and interpretation of magnetotelluric data from the Aluto-Langano geothermal field, Ethiopia [PDF]

open access: yes, 2017
The Main Ethiopian Rift Valley encompasses a number of volcanoes, which are known to be actively deforming with reoccurring periods of uplift and setting. One of the regions where temporal changes take place is the Aluto volcanic complex.
Bakker, J.   +4 more
core  

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

Modeling temporal variations of electrical resistivity associated with pore pressure change in a kilometer-scale natural system

open access: yes, 2005
International audienceFrom 1995 to 1998 the natural electric field was monitored with an array of 20 dipoles on a ridge separating two reservoir lakes in the French Alps.
Bahr   +38 more
core   +3 more sources

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

open access: yesAnnals 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

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