A sensor network for high frequency estimation of water quality constituent fluxes using surrogates

Horsburgh, Jeffery S.; Jones, Amber Spackman; Stevens, David King; Tarboton, David G.; Mesner, Nancy

doi:10.1016/j.envsoft.2009.10.012

Cited by 99 publications

(61 citation statements)

References 39 publications

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“…However, due to resource constraints and the complex temporal distribution of naturally transported fine sediment, these approaches are typically biased towards lower flows and concentrations (Carere et al, 2012;Johnes, 2007). These strategies rarely capture the state of the system when erosive processes, and connectivity across the catchment are most active (Ockenden et al, 2016;Perks et al, 2015), failing to reflect the nature of sedimentassociated pollutant transport at appropriately high temporal and spatial scales (Eriksson et al, 2007;Horsburgh et al, 2010). As such, these monitoring campaigns are not robust or rigorous enough to provide realistic estimates of fluxes, or average pollutant concentrations (Etchells et al, 2005;Gray, 1999;Irvine et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

Use of spatially distributed time-integrated sediment sampling networks and distributed fine sediment modelling to inform catchment management

Perks

Warburton

Bracken

et al. 2017

Journal of Environmental Management

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Section: Introductionmentioning

confidence: 99%

Use of spatially distributed time-integrated sediment sampling networks and distributed fine sediment modelling to inform catchment management

Perks

Warburton

Bracken

et al. 2017

Journal of Environmental Management

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“…For short-lived erroneous events, anomalies were removed through linear interpolation of adjacent values (cf. Horsburgh et al, 2010). …”

Section: Hydrometeorologymentioning

confidence: 99%

Dominant mechanisms for the delivery of fine sediment and phosphorus to fluvial networks draining grassland dominated headwater catchments

Perks

Owen

Benskin

et al. 2015

Science of The Total Environment

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. (2015) 'Dominant mechanisms for the delivery of ne sediment and phosphorus to uvial networks draining grassland dominated headwater catchments.', Science of the total environment., 523 . pp. 178-190. Further information on publisher's website: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details.

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“…Such intensive manual sampling programmes are, however, impractical to sustain for prolonged periods, both in terms of physical and financial resources, and because samples, returned to the laboratory for analysis, are also subject to issues of sample stability (Halliday et al, 2012). Automated instrumental methods are needed to make progress by minimising sample degradation and allowing the study of short-term dynamics when the instream biological response is likely to be most evident (Horsburgh et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Hydrochemical processes in lowland rivers: insights from in situ, high-resolution monitoring

Wade

Palmer-Felgate

Halliday

et al. 2012

Hydrol. Earth Syst. Sci.

127

177

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Abstract. This paper introduces new insights into the hydrochemical functioning of lowland river systems using fieldbased spectrophotometric and electrode technologies. The streamwater concentrations of nitrogen species and phosphorus fractions were measured at hourly intervals on a continuous basis at two contrasting sites on tributaries of the River Thames -one draining a rural catchment, the River Enborne, and one draining a more urban system, The Cut. The measurements complement those from an existing network of multi-parameter water quality sondes maintained across the Thames catchment and weekly monitoring based on grab samples. The results of the sub-daily monitoring show that streamwater phosphorus concentrations display highly complex dynamics under storm conditions dependent on the antecedent catchment wetness, and that diurnal phosphorus and nitrogen cycles occur under low flow conditions. The diurnal patterns highlight the dominance of sewage inputs in controlling the streamwater phosphorus and nitrogen concentrations at low flows, even at a distance of 7 km from the nearest sewage treatment works in the rural River Enborne. The time of sample collection is important when judging water quality against ecological thresholds or standards. An exhaustion of the supply of phosphorus from diffuse and multiple septic tank sources during storm events was evident and load estimation was not improved by sub-daily monitoring beyond that achieved by daily sampling because of the eventual reduction in the phosphorus mass entering the stream during events. The results highlight the utility of sub-daily water quality measurements and the discussion considers the practicalities and challenges of in situ, sub-daily monitoring.

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A sensor network for high frequency estimation of water quality constituent fluxes using surrogates

Cited by 99 publications

References 39 publications

Use of spatially distributed time-integrated sediment sampling networks and distributed fine sediment modelling to inform catchment management

Use of spatially distributed time-integrated sediment sampling networks and distributed fine sediment modelling to inform catchment management

Dominant mechanisms for the delivery of fine sediment and phosphorus to fluvial networks draining grassland dominated headwater catchments

Hydrochemical processes in lowland rivers: insights from in situ, high-resolution monitoring

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