1. 1Seismological Laboratory, Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California, U.S.A.
2. 2Department of Electronics Engineering, Universidad Técnica Federico Santa María, Valparaíso, Chile
3. 3Novelcode SpA, Viña del Mar, Chile
4. 4Valey Kamalov LLC, Gainesville, Florida, U.S.A.