[Society of Exploration Geophysicists and Brazilian Geophysical Society 9th International Congress of the Brazilian Geophysical Society & EXPOGEF, Salvador, Bahia, Brazil, 11-14 September 2005 - Salvador, Bahia, Brazil (11 September to 14 September)] 9th International Congress of the Brazilian Geophysical Society & EXPOGEF, Salvador, Bahia, Brazil, 11-14 September 2005 - Mecanismo Focal do Terremoto Principal de 10 de Março de 1998, Porto dos Gaúchos, Mato Grosso, Brasil