Seismic signature of mudflow tremor resulted from Brumadinho (Brazil) tailings dam failure

Hussain Y.; Hamza O.; Huang X.; Silva A.C.; Condori C.; Uagoda R.; Cavalcante A.L.B. · Revista Escola de Minas (2020) · DOI: 10.1590/0370-44672019730040

Resumen

Mudflow is often associated with seismic activities. The present study applied a seismic based detection of the surface waves generated by the mudflow of Brumadinho dam collapse using records of Brazilian Seismographic Network. The signal envelope and time-frequency spectrograms of the mudflow signals were used in the analysis. As a result, the mudflow signals were successfully detected from the data recorded at a nearby seismic station. The findings of this study provide a good basis for future research to develop a flood early warning system based on cost-effective, remote and contentious seismic monitoring approaches.

Instituciones: Universidad Nacional de San Agustín de Arequipa