ultramarin marine translations
ultramarin.online
nl dagelijkse ongelijkheid   hier: m.b.t de getijden. In de oceanografie een verschil tussen de hoogten van twee hoogwaterstanden en van twee laagwaterstanden van een maansdag.  
de tägliche Ungleichheit hier: der Gezeiten. In der Meerskunde der Unterschied zwischen den Höhen der zwei Hochwasser und der zwei Niedrigwasser eines Mondtages;
en diurnal inequality
declinational inequality
high water inequality		 here: of the tides. In oceanography, a difference between the heights of the two high waters and of the two low waters of a lunar day.
fr inégalité diurne  
pl    
rus    
     
  The difference changes with the declination of the moon and to a lesser extent with declination of the sun. In general, the inequality tends to increase with an increasing declination, either north or south. Mean diurnal high water inequality is one-half the average difference between the two high waters of each day observed over a specific 19-year Metonic cycle (the National Tidal Datum Epoch). It is obtained by subtracting the mean of all high waters from the mean of the higher high waters. Mean diurnal low water inequality is one-half the average difference between the two low waters of each day observed over a specific l9-year Metonic cycle (the National Tidal Datum Epoch). It is obtained by subtracting the mean of the lower low waters from the mean of all low waters.
Tropic high water inequality is the average difference between the two high waters of the day at the times of the tropic tides. Tropic low water inequality is the average difference between the two low waters of the day at the times of the tropic tides. Mean and tropic inequalities as defined above are applicable only when the type of tide is either semidiurnal or mixed.		  
  Glossary of Marine Navigation