Parameter Tree:
EARTH SCIENCE > LAND SURFACE > GEOMORPHIC LANDFORMS/PROCESSES

Definition:
The science dealing with the form and surface configuration of the solid earth. It is primarily an attempt to reveal the complex interrelationships between the origin (and therefore material composition) of surface features on the one hand, and the causes of the surface alteration (erosion, weather, crustal upheaval, etc.) on the other hand.

Reference:
American Meteorological Society Glossary of Meteorology (http://amsglossary.allenpress.com/glossary/)