Results 1 to 10 of about 122 (79)

Monitoring water percolation in a laboratory compacted soil dam using time-lapse electrical resistivity tomography [PDF]

Scientific Reports
Compacted soil dams are critical structures for mining, water supply and power generation, particularly in tropical regions. Monitoring these dams is essential throughout their lifetime, as variations in reservoir water levels due to drought, rainfall or
Leonides Guireli Netto, Patrícia Del Gaudio Orlando, Rodrigo Serafim, Matheus Pereira de Oliveira, João Pedro Silva Pereira, Aline Fernandes Heleno, Tommaso Mendonça Spinelli, Carlos Carrasco Arbieto   +7 more
doaj   +2 more sources

Magnetic and gamma-ray spectrometric airborne geophysical data for investigating potential mineral resources and generating geoscientific knowledge in Colombia

Boletín Geológico, 2021
The Servicio Geológico Colombiano has made available several airborne magnetometry and gamma-ray spectrometry datasets. The information was acquired in 15 blocks that cover approximately 520,000 square  kilometers of Colombian territory, representing ...
Ismael Enrique Moyano Nieto, Renato Cordani, Marcela Lara, Óscar Rojas, Manuel Puentes, Diana Ospina, Hernán Arias, Ernesto Gómez, Sergio Torrado, Adriana Robayo, Gloria Prieto   +10 more
doaj   +1 more source

Regional integration and 3D modeling of airborne geophysical data: Map of Geophysical Anomalies of Colombia for mineral resources, 2020 version

Boletín Geológico, 2021
The Map of Geophysical Anomalies of Colombia for mineral resources, MAGC 2020 version compiles the geophysical information acquired, processed and interpreted by the Servicio Geológico Colombiano (SGC) since 2013.
Manuel Puentes, Adriana Robayo, Ismael Moyano, Eduardo Henrique, Marcela Lara, Hernán Arias, Diana Ospina, Óscar Rojas, Ernesto Gómez, Sergio Torrado, Gloria Prieto Rincón   +10 more
doaj   +1 more source

Reframing the magnetotelluric phase tensor for monitoring applications: improved accuracy and precision in strike determinations

Earth, Planets and Space, 2021
The magnetotelluric method is increasingly being used to monitor electrical resistivity changes in the subsurface. One of the preferred parameters derived from the surface impedance is the strike direction, which is very sensitive to changes in the ...
Ana G. Bravo-Osuna, Enrique Gómez-Treviño, Olaf J. Cortés-Arroyo, Nestor F. Delgadillo-Jauregui, Rocío F. Arellano-Castro   +4 more
doaj   +1 more source

Linking strike directions to invariant TE and TM impedances of the magnetotelluric impedance tensor

Earth, Planets and Space, 2021
Estimation of the traditional transverse electric (TE) and transverse magnetic (TM) impedances of the magnetotelluric tensor for two-dimensional structures can be decoupled from the estimation of the strike direction with significant implications when ...
Rocío F. Arellano-Castro, Enrique Gómez-Treviño   +1 more
doaj   +1 more source

CORRELAÇÃO DE PERFIS GEOFÍSICOS DE POÇOS – SEDE DO MUNICÍPIO DE SALINÓPOLIS-PA

Revista Águas Subterrâneas, 2014
Foi realizada uma correlação de perfis geofísicos de poços das áreas de captação da Companhia de Saneamento do Pará (COSANPA) perfurados no município de Salinópolis para o abastecimento local.
Boris Chaves Freimann, José Geraldo das Virgens Alves, Marcos Welby Correa Silva   +2 more
doaj   +1 more source

Un filtro selectivo de velocidad variable para exploración sísmica de reflexión

Geofísica Internacional, 1991
El filtrado de velocidad de secciones sísmicas tiene como objeto eliminar la presencia de ruidos que enmascaran los arribos asociados a horizontes reflectores de interés.
N.F. Hernández Reyes, R. Fernández
doaj   +1 more source

PROSPECÇÃO GEOFÍSICA PARA DELIMITAÇÃO DO CONTATO DAS FORMAÇÕES ITAPECURU E CODÓ NO MUNICÍPIO DE JACUNDÁ - PA

Revista Águas Subterrâneas, 2014
- A cidade de Jacundá tem um sistema de abastecimento público de água incipiente, a partir de fonte superficial não perene, de pequena vazão e que atende menos de 20% da população.
Marcelo Fernandes Mendes, José Geraldo Das Virgens Alves, Marcos Welby Correa Silva   +2 more
doaj   +1 more source

Mapeamento Geológico do Pegmatito Alto do Urubu, município de Picuí (PB), Faixa Seridó, Província Pegmatítica da Borborema

Revista Principia, 2018
The Alto do Urubu Pegmatite is located in the municipality of Picuí, northern of Paraíba, in Borborema Pegmatitic Province (PPB), the area that has the greatest concentration of pegmatites in the Brazilian Northeast, corresponding to the eastern part of ...
Raissa Yohana Oliveira Santos, Vinicius Anselmo Carvalho Lisboa, José Ramilson Santos Oliveira, Tiago Sales Costa Barros, Thales José Cordeiro Santos, Paulo Sales Costa Barros   +5 more
doaj   +1 more source

A comparative analysis between transient electromagnetic soundings and resistivity soundings in the Tres Virgenes geothermal zone, Mexico

Geofísica Internacional, 1998
Las zonas geotérmicas en áreas volcánicas están caracterizadas por relieves topográficos abruptos y resistividades superficiales variables, representadas por manantiales termales, zonas fósiles y actuales de alteración hidrotermal y la presencia de ...
Carlos Flores, Néctor Velasco
doaj   +1 more source