1. Seismological Observatory, University of Brasília, Campus Darcy Ribeiro – SG13, 70910‐900 Brasília, Brazil, lucas@unb.br
2. Seismology Center, IAG, University of São Paulo, Rua do Matão 1226, 05508‐090 São Paulo, Brazil, marcelo.assumpcao@iag.usp.br
3. Institute of Technological Research (IPT), Av. Prof. Almeida Prado, 532 ‐ Butantã, CEP, 05508‐070 São Paulo, Brazil, ribotta@ipt.br