geomorphic component - hills
- geomorphic component - hills
A set of fundamental, three-dimensional areas and positions that geomorphically define a hill or ridge. In descending topographic order, the geomorphic components are interfluve (stable summit area) ; crest (unstable summit -converged shoulders); three geometric slope areas defined by plan shape and its influence on overland flow and throughflow: These are: head slope (convergent flow), side slope (parallel flow), and nose slope (divergent flow); free face (rock outcrop); and base slope (concave accretion area (colluvium / slope alluvium) at hill bottom).
SW
Glossary of landform and geologic terms.
2013.
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geomorphic component — A fundamental, three dimensional piece or area of a geomorphic setting (i.e., hills, mountains, terraces, flat plains) that has unique and prevailing kinetic energy dynamics and sediment transport conditions which result in their… … Glossary of landform and geologic terms
hillslope-profile position — Discrete slope segments found along a transect line that runs perpendicular to the contour, beginning at a divide and descending to a lower, bounding stream channel or valley floor; a discrete piece of a two dimensional cross profile of a hill … Glossary of landform and geologic terms
crest — 1) a) The commonly linear, narrow top of a ridge, hill, or mountain. It is appropriately applied to elevated areas where retreating backslopes are converging such that these high areas are almost exclusively composed of convex shoulders.… … Glossary of landform and geologic terms
base slope — [ geomorphology ] A geomorphic component of hills consisting of the concave to linear slope (perpendicular to the contour) which, regardless of the lateral shape is an area that forms an apron or wedge at the bottom of a hillside dominated… … Glossary of landform and geologic terms
free face — 1) The part of a hillside or mountainside consisting of an outcrop of bare rock (scarp or cliff) that sheds colluvium to slopes below and commonly stands more steeply than the angle of repose of the colluvial slope (e.g., talus slope)… … Glossary of landform and geologic terms
head slope — [ geomorphology ] A geomorphic component of hills consisting of a laterally concave area of a hillside, especially at the head of a drainageway, resulting in converging overland water flow (e.g., sheet wash); head slopes are dominated by… … Glossary of landform and geologic terms
interfluve — 1) A landform composed of the relatively undissected upland or ridge between two adjacent valleys containing streams flowing in the same general direction. An elevated area between two drainageways that sheds water to those drainageways.… … Glossary of landform and geologic terms
nose slope — [ geomorphology ] A geomorphic component of hills consisting of the projecting end (laterally convex area) of a hillside, resulting in predominantly divergent overland water flow (e.g., sheet wash); contour lines generally form convex… … Glossary of landform and geologic terms
side slope — [ geomorphology ] A geomorphic component of hills consisting of a laterally planar area of a hillside, resulting in predominantly parallel overland water flow (e.g., sheet wash); contour lines generally form straight lines. Side slopes are… … Glossary of landform and geologic terms
Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… … Universalium
