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Advancing understanding of runoff and sediment transfers in agricultural catchments through simultaneous observations across scales.

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Advancing understanding of runoff and sediment transfers in agricultural catchments through simultaneous observations across scales. / Deasy, Clare; Baxendale, S; Heathwaite, A. Louise et al.
In: Earth Surface Processes and Landforms, Vol. 36, No. 13, 10.2011, p. 1749-1760.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

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Deasy C, Baxendale S, Heathwaite AL, Ridall G, Hodgkinson R, Brazier R. Advancing understanding of runoff and sediment transfers in agricultural catchments through simultaneous observations across scales. Earth Surface Processes and Landforms. 2011 Oct;36(13):1749-1760. Epub 2011 Aug 18. doi: 10.1002/esp.2197

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@article{c91d069c5d1a4a98a637b8e9b5d2808c,
title = "Advancing understanding of runoff and sediment transfers in agricultural catchments through simultaneous observations across scales.",
abstract = "Our understanding of the effect of scale on runoff and sediment transfers within catchments is currently limited by a lack of available data. A multi-scale dataset of 17 rainfall events collected simultaneously at four spatial scales within a small agricultural catchment in 2005–2006 is presented. Analysis using exploratory techniques and a two-step, zero-inflated lognormal mixed-effects regression model, has demonstrated that event responses, and event response characteristics representing runoff and sediment peaks and area-normalized yields, are scale dependent, and hence cannot be transferred directly between scales. Runoff and sediment yields increase as scale increases, and it is proposed that this effect, which differs from that observed in the few other studies of scale effects undertaken, is due to increasing connectivity within the catchment, and the dominance of preferential flow pathways including through macropores and field drains. The processes contributing to scale dependence in the data, and the possibility that certain processes dominate at particular scales, are discussed. The data presented here help to improve our spatial understanding of runoff and sediment transport in small agricultural catchments, and provide examples of the type of spatial dataset and the type of analysis that are essential if we are to develop models which are able to predict runoff and soil erosion accurately, and allow us to manage runoff and sediment transport effectively across scales.",
keywords = "monitoring scale, runoff , sediment transfer , catchment, processes",
author = "Clare Deasy and S Baxendale and Heathwaite, {A. Louise} and Gareth Ridall and R. Hodgkinson and R. Brazier",
year = "2011",
month = oct,
doi = "10.1002/esp.2197",
language = "English",
volume = "36",
pages = "1749--1760",
journal = "Earth Surface Processes and Landforms",
issn = "0197-9337",
publisher = "Wiley",
number = "13",

}

RIS

TY - JOUR

T1 - Advancing understanding of runoff and sediment transfers in agricultural catchments through simultaneous observations across scales.

AU - Deasy, Clare

AU - Baxendale, S

AU - Heathwaite, A. Louise

AU - Ridall, Gareth

AU - Hodgkinson, R.

AU - Brazier, R.

PY - 2011/10

Y1 - 2011/10

N2 - Our understanding of the effect of scale on runoff and sediment transfers within catchments is currently limited by a lack of available data. A multi-scale dataset of 17 rainfall events collected simultaneously at four spatial scales within a small agricultural catchment in 2005–2006 is presented. Analysis using exploratory techniques and a two-step, zero-inflated lognormal mixed-effects regression model, has demonstrated that event responses, and event response characteristics representing runoff and sediment peaks and area-normalized yields, are scale dependent, and hence cannot be transferred directly between scales. Runoff and sediment yields increase as scale increases, and it is proposed that this effect, which differs from that observed in the few other studies of scale effects undertaken, is due to increasing connectivity within the catchment, and the dominance of preferential flow pathways including through macropores and field drains. The processes contributing to scale dependence in the data, and the possibility that certain processes dominate at particular scales, are discussed. The data presented here help to improve our spatial understanding of runoff and sediment transport in small agricultural catchments, and provide examples of the type of spatial dataset and the type of analysis that are essential if we are to develop models which are able to predict runoff and soil erosion accurately, and allow us to manage runoff and sediment transport effectively across scales.

AB - Our understanding of the effect of scale on runoff and sediment transfers within catchments is currently limited by a lack of available data. A multi-scale dataset of 17 rainfall events collected simultaneously at four spatial scales within a small agricultural catchment in 2005–2006 is presented. Analysis using exploratory techniques and a two-step, zero-inflated lognormal mixed-effects regression model, has demonstrated that event responses, and event response characteristics representing runoff and sediment peaks and area-normalized yields, are scale dependent, and hence cannot be transferred directly between scales. Runoff and sediment yields increase as scale increases, and it is proposed that this effect, which differs from that observed in the few other studies of scale effects undertaken, is due to increasing connectivity within the catchment, and the dominance of preferential flow pathways including through macropores and field drains. The processes contributing to scale dependence in the data, and the possibility that certain processes dominate at particular scales, are discussed. The data presented here help to improve our spatial understanding of runoff and sediment transport in small agricultural catchments, and provide examples of the type of spatial dataset and the type of analysis that are essential if we are to develop models which are able to predict runoff and soil erosion accurately, and allow us to manage runoff and sediment transport effectively across scales.

KW - monitoring scale

KW - runoff

KW - sediment transfer

KW - catchment

KW - processes

U2 - 10.1002/esp.2197

DO - 10.1002/esp.2197

M3 - Journal article

VL - 36

SP - 1749

EP - 1760

JO - Earth Surface Processes and Landforms

JF - Earth Surface Processes and Landforms

SN - 0197-9337

IS - 13

ER -