Long-term magnetic anomalies and their possible relationship to the latest greater Chilean earthquakes in the context of the seismo-electromagnetic theory
Enrique Guillermo Cordaro,Patricio Venegas-Aravena,and David Laroze
Enrique Guillermo Cordaro
Observatorios de Radiación Cósmica y Geomagnetismo, Departamento
de Física, FCFM, Universidad de Chile, Casilla 487-3, Santiago,
Chile
Facultad de Ingeniería, Universidad Autónoma de Chile, Pedro de
Valdivia 425, Santiago, Chile
Observatorios de Radiación Cósmica y Geomagnetismo, Departamento
de Física, FCFM, Universidad de Chile, Casilla 487-3, Santiago,
Chile
Department of Structural and Geotechnical Engineering, School of
Engineering, Pontificia Universidad Católica de Chile, Vicuña
Mackenna 4860, Macul, Santiago, Chile
Research Center for Integrated Disaster Risk Management (CIGIDEN),
Santiago, Chile
David Laroze
Instituto de Alta Investigación, Universidad de Tarapacá, Casilla
7D, Arica, Chile
Viewed
Total article views: 2,690 (including HTML, PDF, and XML)
HTML
PDF
XML
Total
BibTeX
EndNote
2,010
636
44
2,690
44
42
HTML: 2,010
PDF: 636
XML: 44
Total: 2,690
BibTeX: 44
EndNote: 42
Views and downloads (calculated since 26 Nov 2020)
Cumulative views and downloads
(calculated since 26 Nov 2020)
Total article views: 2,034 (including HTML, PDF, and XML)
HTML
PDF
XML
Total
BibTeX
EndNote
1,553
444
37
2,034
37
35
HTML: 1,553
PDF: 444
XML: 37
Total: 2,034
BibTeX: 37
EndNote: 35
Views and downloads (calculated since 11 Jun 2021)
Cumulative views and downloads
(calculated since 11 Jun 2021)
Total article views: 656 (including HTML, PDF, and XML)
HTML
PDF
XML
Total
BibTeX
EndNote
457
192
7
656
7
7
HTML: 457
PDF: 192
XML: 7
Total: 656
BibTeX: 7
EndNote: 7
Views and downloads (calculated since 26 Nov 2020)
Cumulative views and downloads
(calculated since 26 Nov 2020)
Viewed (geographical distribution)
Total article views: 2,690 (including HTML, PDF, and XML)
Thereof 2,549 with geography defined
and 141 with unknown origin.
Total article views: 2,034 (including HTML, PDF, and XML)
Thereof 1,924 with geography defined
and 110 with unknown origin.
Total article views: 656 (including HTML, PDF, and XML)
Thereof 625 with geography defined
and 31 with unknown origin.
We developed a methodology that generates free externally disturbed magnetic variations in ground magnetometers close to the Chilean convergent margin. Spectral analysis (~ mHz) and magnetic anomalies increased prior to large Chilean earthquakes (Maule 2010, Mw 8.8; Iquique 2014, Mw 8.2; Illapel 2015, Mw 8.3). These findings relate to microcracks within the lithosphere due to stress state changes. This physical evidence should be thought of as a last stage of the earthquake preparation process.
We developed a methodology that generates free externally disturbed magnetic variations in...