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Impoundment Size Index (ISI): The use of potential impoundment size for the characterization of topographic incision in DEMs

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dc.contributor.advisor Lindsay, John
dc.contributor.author Gudim, Simon
dc.date.accessioned 2019-07-09T16:12:05Z
dc.date.available 2019-07-09T16:12:05Z
dc.date.copyright 2019
dc.date.created 2019-06-13
dc.date.issued 2019-07-09
dc.identifier.uri http://hdl.handle.net/10214/16275
dc.description.abstract The purpose of this research is to present a novel land-surface parameter (LSP) of impoundment size, designated as the Impoundment Size Index (ISI), for mapping and quantifying the extent of topographic incision in DEMs. The ISI inserts a digital dam with a user-defined cross- sectional profile length for each cell in the DEM to calculate the size of the impoundment (area, volume, mean depth) that is created as a result of the “digital damming” operation. An analysis of computational performance of ISI was performed to assess the execution times of the algorithm. A bivariate correlation analysis was performed between ISI and six common LSPs used in incision mapping to determine the degree to which the ISI provides unique geomorphometric information. Finally, an assessment of agreement was performed between incised areas identified with the ISI and incised areas identified with visual inspection of the DEMs. en_US
dc.language.iso en en_US
dc.rights Attribution-NoDerivatives 4.0 International *
dc.rights.uri http://creativecommons.org/licenses/by-nd/4.0/ *
dc.subject DEM en_US
dc.subject Geomorphometry en_US
dc.subject Incision en_US
dc.subject Topography en_US
dc.title Impoundment Size Index (ISI): The use of potential impoundment size for the characterization of topographic incision in DEMs en_US
dc.type Major Paper en_US
dc.degree.programme Geography en_US
dc.degree.name Associate Diploma in Agriculture en_US
dc.degree.department Department of Geography, Environment and Geomatics en_US
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Attribution-NoDerivatives 4.0 International Except where otherwise noted, this item's license is described as Attribution-NoDerivatives 4.0 International