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dc.contributor.author
Beer, Alexander R.
dc.contributor.author
Turowski, Jens M.
dc.date.accessioned
2019-05-16T11:07:55Z
dc.date.available
2017-06-11T21:13:32Z
dc.date.available
2019-05-16T11:07:55Z
dc.date.issued
2015-07-13
dc.identifier.other
10.5194/esurf-3-291-2015
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/107005
dc.identifier.doi
10.3929/ethz-b-000107005
dc.description.abstract
Fluvial bedrock incision constrains the pace of mountainous landscape evolution. Bedrock erosion processes have been described with incision models that are widely applied in river-reach and catchment-scale studies. However, so far no linked field data set at the process scale had been published that permits the assessment of model plausibility and accuracy. Here, we evaluate the predictive power of various incision models using independent data on hydraulics, bedload transport and erosion recorded on an artificial bedrock slab installed in a steep bedrock stream section for a single bedload transport event. The influence of transported bedload on the erosion rate (the "tools effect") is shown to be dominant, while other sediment effects are of minor importance. Hence, a simple temporally distributed incision model, in which erosion rate is proportional to bedload transport rate, is proposed for transient local studies under detachment-limited conditions. This model can be site-calibrated with temporally lumped bedload and erosion data and its applicability can be assessed by visual inspection of the study site. For the event at hand, basic discharge-based models, such as derivatives of the stream power model family, are adequate to reproduce the overall trend of the observed erosion rate. This may be relevant for long-term studies of landscape evolution without specific interest in transient local behavior. However, it remains to be seen whether the same model calibration can reliably predict erosion in future events.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Copernicus
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/3.0/
dc.title
Bedload transport controls bedrock erosion under sediment-starved conditions
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 3.0 Unported
ethz.journal.title
Earth Surface Dynamics
ethz.journal.volume
3
en_US
ethz.journal.issue
3
en_US
ethz.pages.start
291
en_US
ethz.pages.end
309
en_US
ethz.size
19 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.nebis
010258325
ethz.publication.place
Göttingen
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02350 - Dep. Umweltsystemwissenschaften / Dep. of Environmental Systems Science::02722 - Institut für Terrestrische Oekosysteme / Institute of Terrestrial Ecosystems::03798 - Kirchner, James W. / Kirchner, James W.
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02350 - Dep. Umweltsystemwissenschaften / Dep. of Environmental Systems Science::02722 - Institut für Terrestrische Oekosysteme / Institute of Terrestrial Ecosystems::03798 - Kirchner, James W. / Kirchner, James W.
ethz.date.deposited
2017-06-11T21:13:49Z
ethz.source
ECIT
ethz.identifier.importid
imp593653b2c557d72571
ethz.ecitpid
pub:167431
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-07-18T12:37:41Z
ethz.rosetta.lastUpdated
2020-02-15T19:05:23Z
ethz.rosetta.versionExported
true
ethz.COinS
ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.atitle=Bedload%20transport%20controls%20bedrock%20erosion%20under%20sediment-starved%20conditions&rft.jtitle=Earth%20Surface%20Dynamics&rft.date=2015-07-13&rft.volume=3&rft.issue=3&rft.spage=291&rft.epage=309&rft.au=Beer,%20Alexander%20R.&Turowski,%20Jens%20M.&rft.genre=article&
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