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Emergence of simplicity despite local complexity in eroding landscapes

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Title: Emergence of simplicity despite local complexity in eroding landscapes
Authors: Roberts, G
Item Type: Journal Article
Abstract: Much understanding of continental topographic evolution is rooted in measuring and predicting rates at which rivers erode. Flume tank and field observations indicate that stochasticity and local conditions play important roles in determining rates at small scales (e.g. < 10 km, thousands of years). Obversely, preserved river profiles and common shapes of rivers atop uplifting topography indicate that erosion rates are predictable at larger scales. These observations indicate that the response of rivers to forcing can be scale dependent. Here I demonstrate that erosional thresholds can provide an explanation for why profile evolution can be very complicated and unique at small scales yet simple and predictable at large scales.
Issue Date: 15-Jul-2021
Date of Acceptance: 21-May-2021
URI: http://hdl.handle.net/10044/1/89831
DOI: 10.1130/G48942.1
ISSN: 0091-7613
Publisher: Geological Society of America
Start Page: 1322
End Page: 1326
Journal / Book Title: Geology (Boulder)
Volume: 49
Issue: 11
Copyright Statement: © 2021 Geological Society of America. For permission to copy, contact editing@geosociety.org.
Sponsor/Funder: The Leverhulme Trust
Funder's Grant Number: RPG-2019-073
Keywords: Geochemistry & Geophysics
04 Earth Sciences
Publication Status: Published
Online Publication Date: 2021-07-15
Appears in Collections:Earth Science and Engineering
Faculty of Engineering