On the origin of internal tide waves in the open sea

Several mechanisms are examined which might explain the observed preponderance of internal waves of tidal period. It is concluded that the effect of the earth\u27s rotation on the velocity of internal waves is an important factor in favoring the generation of such internal waves

Reality and illusion in oceanographic surveys

Care must be exercised in selecting time intervals and spacings between stations along oceanographic profiles in order to avoid erroneous·conclusions regarding the mean circulation. By proper combinations of time intervals and spacings, the effect of internal waves of tidal periods, which are the source of these errors, can be suppressed. The application of these principles to the Marine Life Research cruises of the Scripps Institution is discussed