Constraining the Topographic Signature of Erosion Rates and Processes Using High Resolution Topography

Abstract

Major Goals: The goal of the project was to test 7 hypotheses: H1: All else equal, the erodibility coefficient (K) will vary linearly with MAP. H2: All else equal, the erodibility coefficient K will scale with the tensile strength of the lithologic units. H3: All else equal, the coefficient K will be inversely proportional to discharge variability. H4: All else equal, the erodibility coefficient (K) will be nonlinearly related to erosion rates (e.g., K = aEalpha),with an exponent alpha that is less than 1. H5: Drainage density is sensitive to erosion rate. H6: There is a step change in topographic roughness as landscapes reach a threshold erosion rate, and this threshold is a function of climate. H7: There are step changes in topographic roughness and topographic scaling signatures between bare Earth, grassland and forested landscapes.

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Document Details

Document Type
Technical Report
Publication Date
Dec 22, 2017
Accession Number
AD1080638

Entities

People

  • Simon M. Mudd

Organizations

  • University of Edinburgh

Tags

DTIC Thesaurus Topics

  • Algorithms
  • California
  • Coefficients
  • Coordinate Systems
  • Curvature
  • Data Set
  • Detection
  • Digital Data
  • Erosion
  • Extraction
  • Flood Hazards
  • Floods
  • Geological Surveys
  • Geometry
  • Grids
  • High Resolution
  • Landforms
  • Software Design
  • Software Development
  • Software Testing
  • Statistical Analysis
  • Topography
  • United States

Readers

  • Geotechnical Engineering.
  • Regression Analysis.
  • Wetland-Land-Environmental Management.