Results 21 to 30 of about 69,031 (338)

Shallow and Deep Electric Structures in the Tolhuaca Geothermal System (S. Chile) Investigated by Magnetotellurics

open access: yesRemote Sensing, 2022
The geoelectric properties of the geothermal system associated with the Tolhuaca volcano were investigated by three-dimensional (3D) inversion of magnetotelluric (MT) data.
Maximiliano Pavez   +7 more
doaj   +1 more source

Stability Evaluation of Rock Slope in Hydraulic Engineering Based on Improved Support Vector Machine Algorithm

open access: yesComplexity, 2021
The safety problem of the slope has always been an important subject in engineering geology, which has a wide range of application background and practical significance in reality.
Fei Li, Hongyun Zhang
doaj   +1 more source

Borehole resistivity and induced polarization tomography at the Canadian Shield for Mineral Exploration in north-western Sudbury [PDF]

open access: yesE3S Web of Conferences, 2020
Mineral exploration in the Canadian shield is a major challenge nowadays. This is because of the thick overburden cover and complex geology. Borehole tomography using resistivity and induced polarization (BHDCIP) method has a big advantage here due to ...
Ali Mosaad   +6 more
doaj   +1 more source

INSIGHT INTO SEISMIC REFRACTION AND ELECTRICAL RESISTIVITY TOMOGRAPHY TECHNIQUES IN SUBSURFACE INVESTIGATIONS

open access: yesRudarsko-geološko-naftni Zbornik, 2019
Geophysical subsurface investigations use the principles of physics to unravel intrinsic Earth’s subsurface features and nature of the underlying geology.
Adedibu Sunny Akingboye   +1 more
doaj   +1 more source

Geology differentiation by applying unsupervised machine learning to multiple independent geophysical inversions [PDF]

open access: yesGeophysical Journal International, 2021
SUMMARYEffective quantitative methods for integrating multiple inverted physical property models are necessary to increase the value of information and advance interpretation further to produce interpretable geology models through geology differentiation.
Aline Melo, Yaoguo Li
openaire   +2 more sources

A Physics-Based Neural-Network Way to Perform Seismic Full Waveform Inversion

open access: yesIEEE Access, 2020
Seismic full waveform inversion is a common technique that is used in the investigation of subsurface geology. Its classic implementation involves forward modeling of seismic wavefield based on a certain type of wave equation, which reflects the physics ...
Yuxiao Ren   +4 more
doaj   +1 more source

Potential field power spectrum inversion for scaling geology

open access: yesJournal of Geophysical Research: Solid Earth, 1995
We propose a method for inverting the power spectrum of gravity and magnetic data. The method is demonstrated on aeromagnetic and borewell data from the German Continental Deep Drilling Project (KTB). Density and susceptibility distributions in the Earth's crust exhibit scaling behavior with power spectra proportional to ƒ−β, where f is the wavenumber ...
Maus, S., Dimri, V.
openaire   +4 more sources

Geophysical tomography in engineering geology: an overview [PDF]

open access: yesThe Open Geology Journal, Vol. 3, 30-38, 2009, 2005
An overview of the tomographic interpretation method in engineering geophysics is presented, considering the two approaches of the deterministic tomography inversion, developed for rock elasticity analysis, and the probability tomography imaging developed in the domain of potential fields methods.
arxiv   +1 more source

Dykes, Synclines and Geophysical Inversion - is geology important? [PDF]

open access: yesASEG Extended Abstracts, 2018
In the last 10 years, the average depths of cover for gold and base metal discoveries was 60 and 128 metres respectively (Schodde, 2017). Existing methods of geophysical search techniques appear to lose their practical effectiveness below ~200m. This lack of success has been highlighted as part of the general UNCOVER movement in Australia.
openaire   +2 more sources

Frequency Domain Full Waveform Inversion Method of Acquiring Rock Wave Velocity in Front of Tunnels

open access: yesApplied Sciences, 2021
Ahead geological prospecting, which can estimate adverse geology ahead of the tunnel face, is necessary in the process of tunnel construction. Due to its long detection range and good recognition effect on the interface, the seismic method is widely used
Kai Wang   +7 more
doaj   +1 more source

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