Idioma:

Acoustic and electromagnetic emissions of rocks: insight from laboratory tests at press and shear machines

Klyuchkin, Vadim N. ; Novikov, Victor A. ; Okunev, Vladimir I. ; Zeigarnik, Vladimir A.

Environmental earth sciences, 2022-02, Vol.81 (3), Article 64 [Periódico revisado por pares]

Berlin/Heidelberg: Springer Berlin Heidelberg

Texto completo disponível

Citações Citado por

Enviar para

Título:
Acoustic and electromagnetic emissions of rocks: insight from laboratory tests at press and shear machines
Autor: Klyuchkin, Vadim N. ; Novikov, Victor A. ; Okunev, Vladimir I. ; Zeigarnik, Vladimir A.
Assuntos: Acoustic emission ; Acoustic emission testing ; Acoustics ; Biogeosciences ; Compression ; Compression tests ; Data acquisition ; Deformation ; Earth and Environmental Science ; Earth Sciences ; Earthquake prediction ; Earthquakes ; Emission analysis ; Emissions ; Environmental Science and Engineering ; Failure ; Geochemistry ; Geology ; Hydrology/Water Resources ; Laboratory tests ; Original Article ; Rocks ; Rupture ; Rupturing ; Salinity ; Sediment samples ; Seismic activity ; Shear ; Shear tests ; Terrestrial Pollution ; Tests
É parte de: Environmental earth sciences, 2022-02, Vol.81 (3), Article 64
Descrição: An analysis of acoustic and electromagnetic emissions recorded during deformation of intact rock samples and dynamic rupture of simulated crustal fault is presented. Specialized machines for uniaxial compression and shear tests of rock samples with identical data acquisition systems for both test cases were employed. An increase in the acoustic emission was observed from the sample accompanied by significant increase in the intensity and amplitude of electromagnetic signals at high stress of the rock samples in the tests with uniaxial compression or dynamic failure in the spring-block model. Such correlation is consistent with the previous conclusions that an increase of electromagnetic emission may be considered as a precursor of rock failure. Nevertheless, any specific characteristics of the detected electromagnetic signals, which may be used for prediction of impending rock failure or the earthquake fault rupture, were not found. The similarity of electromagnetic signals and their spectra obtained at the press equipment and the spring-block model suggests that in both cases the signals observed are generated by crack formations and shear. The electromagnetic emission appeared only in dry samples. The samples saturated by water with a salinity of over 0.1% demonstrated no electromagnetic emission.
Editor: Berlin/Heidelberg: Springer Berlin Heidelberg
Idioma: Inglês

Voltar para lista de resultados

Anterior Resultado 11 Avançar Ir para próxima página

Realização: Logos de Redes Sociais:

Acoustic and electromagnetic emissions of rocks: insight from laboratory tests at press and shear machines

Klyuchkin, Vadim N. ; Novikov, Victor A. ; Okunev, Vladimir I. ; Zeigarnik, Vladimir A.

Berlin/Heidelberg: Springer Berlin Heidelberg

Buscando em bases de dados remotas. Favor aguardar.