SECTION 11.0 



GLOSSARY OF TERMS 



The following is a partial list of terms employed in the oceanographic and mathematical 

 fields. These terms are submitted in the hope th at they will not only serve to clarify the termi- 

 nology used in the report, but will also act as a basis for a more extensive and amended 

 glossary in the field of Oceanography. 



Absolute Value : 

 Accidental Error: 

 Accuracy : 



Advection : 

 Anchor Station: 



Average Bathythermogram : 

 Average Deviation: 

 Average Difference: 

 Average Value: 



Bathythermogram : 



Bathythermogram, Average : 



Bathythermograph : 



See Value, Absolute. 



See Error, Accidental. 



The degree of concordance of a number representing the value 

 of a quantity and the number representing the true value of 

 the quantity ; it may be expressed in either absolute or relative 

 terms. This is a qualitative definition, since the true value of 

 many quantities can never be known. 



Movement of water mass into or out of a fixed locality because 

 of ocean currents, upwelling, etc. 



Position occupied by a hydrographic vessel which is in a fixed 

 locality. The more correct application of the term is made to 

 vessels specifically at anchor, although it is sometimes applied 

 to ships adrift. 



See Bathythermogram, Average. 



See Deviation, Average. 



See Difference, Average. 



See Value, Average. 



B 



Photographic reproduction of a Bathythermograph slide 

 which has the Bathythermograph grid superimposed for read- 

 ing the temperature and depth values, the necessary tempera- 

 ture and depth correction having been applied in superim- 

 posing the grid. 



A Bathythermogram calculated by employing average tem- 

 perature values for a fixed locality over a period of time. 

 Average Bathythermograms may be obtained by a number 

 of averaging techniques, such as curve fitting, mathematical 

 regression lines, least square, etc. 



Instrument which measures the change of temperature with 

 the corresponding change in depth of the ocean. It employs 

 a pressure bellows element to register depth changes and 

 liquid filled temperature element to register change in tem- 

 perature. The data are given in the form of a curve of tem- 

 perature versus depth, or a smoked slide. 



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