Sediment connectivity: a framework for understanding sediment transfer at multiple scales

Bracken, Louise J., Turnbull, Laura, Wainwright, John and Bogaart, Patrick (2015) Sediment connectivity: a framework for understanding sediment transfer at multiple scales. Earth Surface Processes and Landforms, 40 (2). pp. 177-188. ISSN 0197-9337

NRL_47290.pdf - Accepted Version

Download (552kB) | Preview
Official URL:


A major challenge for geomorphologists is to scale up small-magnitude processes to produce landscape form, yet existing approaches have been found to be severely limited. New ways to scale erosion and transfer of sediment are thus needed. This paper evaluates the concept of sediment connectivity as a framework for understanding processes involved in sediment transfer across multiple scales. We propose that the concept of sediment connectivity can be used to explain the connected transfer of sediment from a source to a sink in a catchment, and movement of sediment between different zones within a catchment: over hillslopes, between hillslopes and channels, and within channels. Using fluvial systems as an example we explore four scenarios of sediment connectivity which represent end-members of behaviour from fully linked to fully unlinked hydrological and sediment connectivity. Sediment-travel distance – when combined with an entrainment parameter reflecting the frequency–magnitude response of the system – maps onto these end-members, providing a coherent conceptual model for the upscaling of erosion predictions. This conceptual model could be readily expanded to other process domains to provide a more comprehensive underpinning of landscape-evolution models. Thus, further research on the controls and dynamics of travel distances under different modes of transport is fundamental.

Item Type: Article
Uncontrolled Keywords: Sediment connectivity, Sediment-travel distance, Hydrological connectivity, Landscape form, Frequency-magnitude.
Subjects: F600 Geology
F700 Ocean Sciences
F800 Physical and Terrestrial Geographical and Environmental Sciences
H200 Civil Engineering
Department: Faculties > Engineering and Environment > Geography and Environmental Sciences
Depositing User: Elena Carlaw
Date Deposited: 20 Sep 2021 16:08
Last Modified: 20 Sep 2021 16:15

Actions (login required)

View Item View Item


Downloads per month over past year

View more statistics