Fluvial geomorphology

thumb|300px|Aerial view of the almost flat and drowned peneplain at Belcher Islands, Hudson Bay, Canada, cutting across numerous [[geologic folds.]]

geomorphological phenomenon

Hypsometry () is the measurement of the elevation and depth of features of Earth's surface relative to mean sea level.

Lowest limit for erosion processes

removal of sediment near an obstruction by swiftly moving water

term