1. Department of Geophysics, Faculty of Physics, University of Science, Vietnam National University, Hanoi 100000, Vietnam
2. Graduate Program in Geology, Department of Mathematics, Federal University of Paraná, Curitiba 81531-980, PR, Brazil
3. Department of Geophysics, Faculty of Physics and Engineering Physics, University of Science, Vietnam National University Ho Chi Minh City, Ho Chi Minh City 700000, Vietnam