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- W2786156787 endingPage "523" @default.
- W2786156787 startingPage "505" @default.
- W2786156787 abstract "Abstract. For over a century, geomorphologists have attempted to unravel information about landscape evolution, and processes that drive it, using river profiles. Many studies have combined new topographic datasets with theoretical models of channel incision to infer erosion rates, identify rock types with different resistance to erosion, and detect potential regions of tectonic activity. The most common metric used to analyse river profile geometry is channel steepness, or ks. However, the calculation of channel steepness requires the normalisation of channel gradient by drainage area. This normalisation requires a power law exponent that is referred to as the channel concavity index. Despite the concavity index being crucial in determining channel steepness, it is challenging to constrain. In this contribution, we compare both slope–area methods for calculating the concavity index and methods based on integrating drainage area along the length of the channel, using so-called “chi” (χ) analysis. We present a new χ-based method which directly compares χ values of tributary nodes to those on the main stem; this method allows us to constrain the concavity index in transient landscapes without assuming a linear relationship between χ and elevation. Patterns of the concavity index have been linked to the ratio of the area and slope exponents of the stream power incision model (m∕n); we therefore construct simple numerical models obeying detachment-limited stream power and test the different methods against simulations with imposed m and n. We find that χ-based methods are better than slope–area methods at reproducing imposed m∕n ratios when our numerical landscapes are subject to either transient uplift or spatially varying uplift and fluvial erodibility. We also test our methods on several real landscapes, including sites with both lithological and structural heterogeneity, to provide examples of the methods' performance and limitations. These methods are made available in a new software package so that other workers can explore how the concavity index varies across diverse landscapes, with the aim to improve our understanding of the physics behind bedrock channel incision." @default.
- W2786156787 created "2018-02-23" @default.
- W2786156787 creator A5044968443 @default.
- W2786156787 creator A5055729777 @default.
- W2786156787 creator A5062287980 @default.
- W2786156787 creator A5064566443 @default.
- W2786156787 date "2018-06-22" @default.
- W2786156787 modified "2023-10-16" @default.
- W2786156787 title "How concave are river channels?" @default.
- W2786156787 cites W136991059 @default.
- W2786156787 cites W1504827285 @default.
- W2786156787 cites W1533315712 @default.
- W2786156787 cites W1538719650 @default.
- W2786156787 cites W1546992208 @default.
- W2786156787 cites W1561691396 @default.
- W2786156787 cites W1582979715 @default.
- W2786156787 cites W1872003793 @default.
- W2786156787 cites W1930058403 @default.
- W2786156787 cites W1965193627 @default.
- W2786156787 cites W1968159495 @default.
- W2786156787 cites W1973341400 @default.
- W2786156787 cites W1975052733 @default.
- W2786156787 cites W1979607177 @default.
- W2786156787 cites W1980702980 @default.
- W2786156787 cites W1984121331 @default.
- W2786156787 cites W1986852018 @default.
- W2786156787 cites W1992950963 @default.
- W2786156787 cites W1993999355 @default.
- W2786156787 cites W1994516378 @default.
- W2786156787 cites W1995214430 @default.
- W2786156787 cites W1995521250 @default.
- W2786156787 cites W2000399649 @default.
- W2786156787 cites W2006480793 @default.
- W2786156787 cites W2015372091 @default.
- W2786156787 cites W2015888075 @default.
- W2786156787 cites W2018335334 @default.
- W2786156787 cites W2018540518 @default.
- W2786156787 cites W2022286939 @default.
- W2786156787 cites W2026079147 @default.
- W2786156787 cites W2029629075 @default.
- W2786156787 cites W2032306031 @default.
- W2786156787 cites W2032504548 @default.
- W2786156787 cites W2045214721 @default.
- W2786156787 cites W2046345772 @default.
- W2786156787 cites W2047071619 @default.
- W2786156787 cites W2059054619 @default.
- W2786156787 cites W2086486026 @default.
- W2786156787 cites W2090279538 @default.
- W2786156787 cites W2093905602 @default.
- W2786156787 cites W2095152033 @default.
- W2786156787 cites W2103395397 @default.
- W2786156787 cites W2104300819 @default.
- W2786156787 cites W2104555680 @default.
- W2786156787 cites W2111134353 @default.
- W2786156787 cites W2113195347 @default.
- W2786156787 cites W2116995347 @default.
- W2786156787 cites W2118719501 @default.
- W2786156787 cites W2126041055 @default.
- W2786156787 cites W2126210963 @default.
- W2786156787 cites W2127886814 @default.
- W2786156787 cites W2142635246 @default.
- W2786156787 cites W2144168304 @default.
- W2786156787 cites W2144723887 @default.
- W2786156787 cites W2144789170 @default.
- W2786156787 cites W2150259121 @default.
- W2786156787 cites W2158346779 @default.
- W2786156787 cites W2159569412 @default.
- W2786156787 cites W2160189413 @default.
- W2786156787 cites W2162512478 @default.
- W2786156787 cites W2163129514 @default.
- W2786156787 cites W2214163154 @default.
- W2786156787 cites W2225905194 @default.
- W2786156787 cites W2292183159 @default.
- W2786156787 cites W2323146210 @default.
- W2786156787 cites W2411401948 @default.
- W2786156787 cites W2479949424 @default.
- W2786156787 cites W2487856801 @default.
- W2786156787 cites W2509958485 @default.
- W2786156787 cites W2551572405 @default.
- W2786156787 cites W2562280586 @default.
- W2786156787 cites W2602081000 @default.
- W2786156787 cites W2602945291 @default.
- W2786156787 cites W2743648572 @default.
- W2786156787 cites W2757488704 @default.
- W2786156787 cites W2760555023 @default.
- W2786156787 cites W2771910403 @default.
- W2786156787 cites W2809545620 @default.
- W2786156787 cites W375247615 @default.
- W2786156787 cites W4302378845 @default.
- W2786156787 cites W628215418 @default.
- W2786156787 doi "https://doi.org/10.5194/esurf-6-505-2018" @default.
- W2786156787 hasPublicationYear "2018" @default.
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