isanomal

An isoline joining points with the same degree of anomaly or deviation in some meteorological or geological phenomenon.

In general pattern, the isanomal map showing the extent to which Tasmanian stations depart from the world mean of variability for all places with the same average rainfall confirms the map of relative variability.

The values of gravity acceleration obtained are plotted on Bouguer's isanomal map for geological interpretation.

An isabnormal.

The usefulness of isanomal maps to climatological study and students of climate is varied and profound. By reducing the control of latitude on temperature to zero, the spatial patterns of thermal influence exhibited by other climatic controls such as altitude, continentality, etc., are more easily identified and analyzed.