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Channel Initiation and the Problem of Landscape Scale
Abstract
Since the 1940s it has been proposed that landscape dissection into distinct valleys is limited by a threshold of channelization that sets a finite scale to the landscape. This threshold is equal to the hillslope length that is just shorter than that necessary to support a channel head. A field study supports this hypothesis by showing that an empirically defined topographic threshold associated with channel head locations also defines the border between essentially smooth, undissected hillslopes and the valley bottoms to which they drain. This finding contradicts assertions that landscapes are scale-independent and suggests that landscape response to changes in climate or land use depends on the corresponding changes in the threshold of channelization.
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Citations
Cited by
A detachment‐limited model of drainage basin evolution
Howard, A. D. (1994) · Water Resources Research · doi:10.1029/94wr00757 · Cited by 1,255
Roering, J. J., Kirchner, J. W., & Dietrich, W. E. (1999) · Water Resources Research · doi:10.1029/1998wr900090 · Cited by 705
Self-citationCosta‐Cabral, M. C., & Burges, S. J. (1994) · Water Resources Research · doi:10.1029/93wr03512 · Cited by 490
Tucker, G. E., & Whipple, K. X. (2002) · Journal of Geophysical Research: Solid Earth · doi:10.1029/2001jb000162 · Cited by 451
Formation of evenly spaced ridges and valleys
Perron, J. T., Kirchner, J. W., & Dietrich, W. E. (2009) · Nature · doi:10.1038/nature08174 · Cited by 317
Self-citation
Metadata
- Authors
- Montgomery, D. R., & Dietrich, W. E.
- Venue
- Science
- Published
- 1992-02-14
- Volume
- 255
- Issue
- 5046
- Pages
- 826-830
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2135955237
- Cited by
- 742
- References
- 0
- FWCI
- 21.81
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Channel Initiation and the Problem of Landscape Scale. https://app.cochat.ai/papers/10.1126/science.255.5046.826
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- Montgomery, D. R., & Dietrich, W. E. (1992). Channel Initiation and the Problem of Landscape Scale. Science. https://doi.org/10.1126/science.255.5046.826
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
