Climatic forcing on channel profiles in the eastern cordillera of the Coroico Region, Bolivia
- Orographic precipitation has a large impact on channel morphology and rock uplift via a positive feedback to erosion. We show that in the Eastern Cordillera of Bolivia, channel concavities reach their highest values where annual precipitation increases in the downstream direction, exceeding 3000 mm. The steepest channels are upstream of this zone of high concavity, where precipitation rates are <1000 mm yr(-1). Channels exhibit graded forms both upstream and downstream of this transient reach. We conclude that the prolonged effect of orographic erosion and related tectonic uplift is the preservation of channels with extreme concavities in the Eastern Cordillera.
| Author details: | Fritz Schlunegger, Kevin P. Norton, Gerold ZeilingerORCiDGND |
|---|---|
| DOI: | https://doi.org/10.1086/657407 |
| ISSN: | 0022-1376 |
| Title of parent work (English): | The journal of geology |
| Publisher: | Univ. of Chicago Press |
| Place of publishing: | Chicago |
| Publication type: | Article |
| Language: | English |
| Year of first publication: | 2011 |
| Publication year: | 2011 |
| Release date: | 2017/03/26 |
| Volume: | 119 |
| Issue: | 1 |
| Number of pages: | 11 |
| First page: | 97 |
| Last Page: | 107 |
| Funding institution: | Swiss National Science Foundation [20021] |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Geowissenschaften |
| Peer review: | Referiert |
| Institution name at the time of the publication: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Erd- und Umweltwissenschaften |
