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.
Douglas is the anglicized version of the Scottish medieval surname Dubhghlas, dÃ¹bhghlas from The gaelic âelementsâ dubh âmeaningâ dark âandâ glais âmeaning, waterâ. Stream this distinguished clan name was borne by a long and powerful line Of Scottish, earls originating from the lands Of. douglasouglas is the anglicized version of the Scottish medieval surname Dubhghlas, dÃ¹bhghlas from The gaelic âelementsâ dubh âmeaningâ dark âandâ glais âmeaning, waterâ. Stream this distinguished clan name was borne by a long and powerful line Of Scottish, earls originating from the lands Of. douglas