Journal article
Relationships between the morphometry of alpine and subalpine basins and remotely sensed estimates of lake turbidity, Glacier National Park, Montana
Physical Geography, Vol.13(3), pp.250-272
1992
Abstract
Relationships between characteristics of alpine and subalpine drainage basin form and estimates of lake turbidity were examined. The study was designed to provide insight into sediment removal and delivery systems in an environment where direct process studies are difficult because of logistical constraints. Remote sensing techniques were developed to assess lake turbidity levels through the acquisition of spectral responses by the Landsat Thematic Mapper. Topographic maps were interpreted to derive measurements of morphometric characteristics of 25 study basins within Glacier National Park, Montana. The morphometric variables were chosen to describe basin characteristics related to sediment removal and transport processes. Correlation analysis, principal components analysis (PCA), hierarchical clustering, and analysis of variance (ANOVA) were used to assess characteristics of basin form and the relationship to levels of lake turbidity. A significant correlation between the first principal component, which accounted for the general morphometric character of basins, and estimated lake turbidity was discovered. The areal extent of glacial ice and total stream length within the basins were the most significant variables related to estimated levels of lake turbidity.
Details
- Title
- Relationships between the morphometry of alpine and subalpine basins and remotely sensed estimates of lake turbidity, Glacier National Park, Montana
- Authors
- D G Brown (Author) - Michigan State University, United StatesStephen J Walsh (Author) - University of North Carolina at Chapel Hill, United States
- Publication details
- Physical Geography, Vol.13(3), pp.250-272
- Publisher
- Taylor & Francis Ltd.
- Date published
- 1992
- DOI
- 10.1080/02723646.1992.10642457
- ISSN
- 0272-3646
- Organisation Unit
- University of the Sunshine Coast, Queensland
- Language
- English
- Record Identifier
- 99449398602621
- Output Type
- Journal article
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