Geomorphometry - diversity in quantitative surface analysis

Geomorphometry – diversity in quantitative surface analysis

A widening variety of applications is diversifying geomorphometry (digital terrain modelling), the quantitative study of topography. An amalgam of earth science, mathematics, engineering and computer science, the discipline has been revolutionized by the computer manipulation of gridded terrain heights, or digital elevation models (DEMs). Its rapid expansion continues. This article reviews the ...

Towards exactness in geomorphometry

Exactness of results of geomorphometric research depends not only on measurement and computational exactness but also on exact definition of measured objects and exactness of interpretation of the geomorphometric variables. The need to consider all aspects of exactness in mutual relationships is exemplified from the use of third order local point-based variables.

Multiscale analysis of hillslope height for geomorphometry

Geomorphometry: A Brief Guide

Geomorphometry is the science of quantitative land-surface analysis (Pike, 1995, 2000a; Rasemann et al., 2004). It is a modern, analytical-cartographic approach to representing bare-earth topography by the computer manipulation of terrain height (Tobler, 1976, 2000). Geomorphometry is an interdisciplinary field that has evolved from mathematics, the Earth sciences, and — most recently — compute...

Geomorphometry and DEM Error

Studies of DEM error have consistently found a link between terrain characteristics such as slope shape or steepness and error. This link is explored by looking at error in relation to various geomorphometric measures for a study area in Scotland. The magnitude of error is found to vary systematically between convex, planar and convex areas and measures of terrain roughness show some degree of ...