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.
German: from Middle High German ris âundergrowthâ, âbrushwoodâ; a topographic name for someone who lived in an overgrown area, or a habitational name from Reis or Reissen in Bavaria, named with this word.German: occupational name for a cobbler, Middle High German riuze.