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.
Bibliographical noteFunding Information:
The authors would like to thank Dr. Marcelo Bianchi (University of S?o Paulo) for sharing the codes used for the calculation of signal envelope. This study was financed in part by the Coordination for the Improvement of Higher Education Personnel ? Brasil (CAPES) ? Finance Code 001. The authors also acknowledge the support of the National Council for Scientific and Technological Development (CNPq Grant 304721/2017-4), and the University of Bras?lia.
© 2020, Escola de Minas. All rights reserved.
- Flood early warning system