54030339 Unit 1 the Study of Morphological Structure of English
Morphological Unit (1) (1)
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Transcript of Morphological Unit (1) (1)
Revealing the natural complexity of fluvial morphology through 2D hydrodynamic delineation of river landformsWyrick J.R., Senter A.E., Pasternick G.B., (2013)
Evan Norman - Geographic Information Analysis - 2.27.2015
Shaded relief map of a streambed
What is a morphological unit (MU)?
“Topographic forms within the river corridor that represent distinct form-process applications.”
-Controlled by ecohydraulic variables-Near-census-In this study, applicable at lengths ~1-10 times W
Why are MUs calculated?
-Describes underlying landforms in a river with 2D modeling
-Habitat assessments
-Subjectivity
-Changing flow conditions
-“Ideal” conditions
-Increasing MU types
-Overlap of zones
-Flow direction
Drawbacks
Example MU delineation procedure for a lowland gravel-cobble river
-Spatial Analyst- Raster calculator
-Irregular shapes
-Precise
-Thresholds are adjusted by discharge in model
More about MU mapping..