Regensburg, TH orcid.org/0000-0002-3935-4063, Chapman, PJ, Pilkington, MG et al. (3 more authors) (2020) Controls on the spatial distribution of natural pipe outlets in heavily degraded blanket peat. Geomorphology, 367. 107322. ISSN 0169-555X
Abstract
Natural soil pipes are recognised as a common geomorphological feature in many peatlands, and they can discharge large quantities of water and sediment. However, little is known about their morphological characteristics in heavily degraded peat systems. This paper presents a survey of pipe outlets in which the frequency and extent of natural soil pipes are measured across a heavily gullied blanket peat catchment in the Peak District of northern England. Over a stream length of 7.71 km we determined the occurrence and size of 346 pipe outlets, and found a mean frequency of 22.8 km−1 gully bank. Topographic position was an important control on the size and depth of pipe outlets. Aspect had a large influence on pipe outlet frequency, with southwest and west- facing gully banks hosting more than 43% of identified pipe outlets. Pipe outlets on streambanks with signs of headward retreat were significantly larger and closer to the peat surface compared to pipe outlets that issued onto uniform streambank edges. We suggest that larger pipe frequencies are observed on gully banks that are more susceptible to desiccation cracking, and propose that future peatland restoration works could prioritise mitigating against pipe formation by revegetating and reprofiling south and west facing gully banks.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2020 Published by Elsevier B.V. This is an author produced version of an article published in Geomorphology. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Piping; Peatland; Geomorphology; Desiccation; Degradation |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Geography (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 22 Jul 2020 11:31 |
Last Modified: | 08 Jan 2025 13:06 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.geomorph.2020.107322 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:163241 |
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