Both body and surface waves are traveling waves; however, large earthquakes can also make the Earth ring like a bell. This ringing is a mixture of normal modes with discrete frequencies and periods of an hour or shorter. Motion caused by a large earthquake can be observed for up to a month after the event.
Carballo comes from the Portuguese word Carvalho, which means Oak. Therefore, this name means the place where the Oaks come from. In Portugal, Carvalho is also the name of a province in the district of Pe acova, within the Carvalho Mountains. In Spain, during the re-conquest years or the Reconquista, the name Carballo was extended from Galicia to the Iberian Peninsula and to the Canary Islands.
This article is about the Brazilian footballer born in 1982. For the Brazilian footballer born in 1981, see KakÃ¡ (footballer, born 1981). For other uses, see Kaka. This name uses Portuguese naming customs. The first or maternal family name is Santos and the second or paternal family name is Leite.