Parameter Tree:
EARTH SCIENCE > CRYOSPHERE > GLACIERS/ICE SHEETS > GLACIER TOPOGRAPHY/ICE SHEET TOPOGRAPHY

Definition:
Surface relief of the land. Topography usually is measured in meters above sea
level. The topography can be very different from one location to another.
Topography can be flat, or mountainous, or hilly.


Reference:
From the Rice University Glacier Glossary
http://www.glacier.rice.edu/misc/glossary.html