Key Geomorphometric Parameters

 

Suggested key variables for terrain description (Guth, 2006).

Parameter

Descriptive Name

Notes

SLOPE_AVG

Steepness or Roughness

Evans (1998).  One of 15 contributing variables to the most important attribute of Pike (2001)

ELEV_RELF

Elevation-relief ratio or Coefficient of dissection

Pike and Wilson (1971).  One of 2 contributing variables to the third most important attribute of Pike (2001)

S2S3

Organization

Guth (2003).  Only in moderate to steep terrain. Terrain organization references.

SLOPE_STD

Heterogeneity

Evans (1998).  Only in moderate to steep terrain.

PROFC_STD

Curvature in profile

Evans (1998).  Only in moderate to steep terrain.

PLANC_STD

Curvature in plan

Evans (1998).  Only in moderate to steep terrain.

ELEV_AVG

Average elevation

Largely descriptive only.  Evans, 1998.  One of 2 contributing variables to the second most important attribute of Pike (2001)

FABRIC_DIR

Fabric direction

Largely descriptive only. Guth (2003).   Terrain organization references.

ELEV_KRT

Homogeneity

Evans (1998).  May be too noisy.  Only variable in the fourth most important terrain attribute of Pike (2001).

ELEV_SKW

Massiveness (inverse)

Evans (1998).  Only in moderate to steep terrain.  One of 2 contributing variables to the third most important attribute of Pike (2001).

SLOPE_KRT

Modality

Evans (1998). Only in moderate to steep terrain, and may be too noisy

SLOPE_SKW

Limitation

Evans (1998). Only in moderate to steep terrain, and may be too noisy

All Regional Parameters computed in MICRODEM


Last revision 6/15/2015