Publication Date:
2016-08-01
Description:
Slope-area analysis and the integral approach both have been widely used in stream profile analysis. However, channel steepness derived from the former one is characterized by large uncertainties and deviated concavities and false knickpoints may occur when utilizing the integral approach. Limited work has been done to couple the advantages of the two methods and remedy such drawbacks. Here we show the merit of the log-transformed slope-area plot to identify colluvial, bedrock and alluvial channels along river profiles. Via the integral approach, we can get bedrock channel concavity and steepness with high precision. In addition, we run bi-variant linear regression statistic tests for the two methods to examine and eliminate serial correlation of residuals. Therefore, the coupled process, combining the advantages of slope-area analysis and the integral approach, can be a more robust and capable method for bedrock river profile analysis.
Electronic ISSN:
2196-6338
Topics:
Geosciences
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