| High-frequency water quality time series in precipitation and streamflow: From fragmentary signals to scientific challenge. | |
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MedLine Citation:
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PMID: 22245159 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Eighteen months of 7-hourly analyses of rainfall and stream water chemistry are presented, spanning a wide range of chemical determinands and building on over 20years of weekly records for the moorland headwaters of the river Severn. The high-frequency time series data show that hydrochemical responses to major hydrological and biological drivers of short-term variability in rainfall and rivers are not captured by conventional low-frequency monitoring programmes. A wealth of flow related, flow independent, diurnal, seasonal and annual fluctuations indicate a cacophony of interactions within the catchment and stream. The complexity of the chemical dynamics is visually obvious, although there appears to be no clear way of translating this complexity into a simple algorithm. The work provides a proof of concept for the complex structure of catchment functioning revealed by extensive high-frequency measurements coupled with high analytical sensitivity and reproducibility. It provides new insights into hydrogeochemical functioning and a novel resource for catchment modelling. |
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Authors:
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Colin Neal; Brian Reynolds; Philip Rowland; David Norris; James W Kirchner; Margaret Neal; Darren Sleep; Alan Lawlor; Clive Woods; Sarah Thacker; Hayley Guyatt; Colin Vincent; Kathryn Hockenhull; Heather Wickham; Sarah Harman; Linda Armstrong |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-1-13 |
Journal Detail:
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Title: The Science of the total environment Volume: - ISSN: 1879-1026 ISO Abbreviation: - Publication Date: 2012 Jan |
Date Detail:
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Created Date: 2012-1-16 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0330500 Medline TA: Sci Total Environ Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2011 Elsevier B.V. All rights reserved. |
Affiliation:
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Centre for Ecology and Hydrology, Wallingford, Crowmarsh Gifford, Wallingford, Oxon, OX10 8BB, UK. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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