mean diurnal low-water inequality

mean diurnal low-water inequality

[′mēn dī′ərn·əl ′lō ‚wȯd·ər ‚in·i·′kwal·əd·ē]
(oceanography)
Half the average difference between the heights of the two low waters of each tidal day over a 19-year period; it is obtained by subtracting the mean of all lower low waters from the mean of the low waters.