Towards integrating tracer studies in conceptual rainfall‐runoff models: recent insights from a sub‐arctic catchment in the Cairngorm Mountains, Scotland
Abstract Hydrochemical tracers (alkalinity and silica) were used in an end‐member mixing analysis (EMMA) of runoff sources in the 10 km 2 Allt a' Mharcaidh catchment. A three‐component mixing model was used to separate the hydrograph and estimate, to a first approximation, the range of likely c...
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crwiley:10.1002/hyp.1132 2024-06-02T08:02:21+00:00 Towards integrating tracer studies in conceptual rainfall‐runoff models: recent insights from a sub‐arctic catchment in the Cairngorm Mountains, Scotland Soulsby, Chris Dunn, Sarah M. 2003 http://dx.doi.org/10.1002/hyp.1132 https://onlinelibrary.wiley.com/doi/pdf/10.1002/hyp.1132 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Hydrological Processes volume 17, issue 2, page 403-416 ISSN 0885-6087 1099-1085 journal-article 2003 crwiley https://doi.org/10.1002/hyp.1132 2024-05-03T11:13:08Z Abstract Hydrochemical tracers (alkalinity and silica) were used in an end‐member mixing analysis (EMMA) of runoff sources in the 10 km 2 Allt a' Mharcaidh catchment. A three‐component mixing model was used to separate the hydrograph and estimate, to a first approximation, the range of likely contributions of overland flow, shallow subsurface storm flow, and groundwater to the annual hydrograph. A conceptual, catchment‐scale rainfall‐runoff model (DIY) was also used to separate the annual hydrograph in an equivalent set of flow paths. The two approaches produced independent representations of catchment hydrology that exhibited reasonable agreement. This showed the dominance of overland flow in generating storm runoff and the important role of groundwater inputs throughout the hydrological year. Moreover, DIY was successfully adapted to simulate stream chemistry (alkalinity) at daily time steps. Sensitivity analysis showed that whilst a distinct groundwater source at the catchment scale could be identified, there was considerable uncertainty in differentiating between overland flow and subsurface storm flow in both the EMMA and DIY applications. Nevertheless, the study indicated that the complementary use of tracer analysis in EMMA can increase the confidence in conceptual model structure. However, conclusions are restricted to the specific spatial and temporal scales examined. Copyright © 2003 John Wiley & Sons, Ltd. Article in Journal/Newspaper Arctic Wiley Online Library Arctic Hydrological Processes 17 2 403 416 |
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Wiley Online Library |
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English |
description |
Abstract Hydrochemical tracers (alkalinity and silica) were used in an end‐member mixing analysis (EMMA) of runoff sources in the 10 km 2 Allt a' Mharcaidh catchment. A three‐component mixing model was used to separate the hydrograph and estimate, to a first approximation, the range of likely contributions of overland flow, shallow subsurface storm flow, and groundwater to the annual hydrograph. A conceptual, catchment‐scale rainfall‐runoff model (DIY) was also used to separate the annual hydrograph in an equivalent set of flow paths. The two approaches produced independent representations of catchment hydrology that exhibited reasonable agreement. This showed the dominance of overland flow in generating storm runoff and the important role of groundwater inputs throughout the hydrological year. Moreover, DIY was successfully adapted to simulate stream chemistry (alkalinity) at daily time steps. Sensitivity analysis showed that whilst a distinct groundwater source at the catchment scale could be identified, there was considerable uncertainty in differentiating between overland flow and subsurface storm flow in both the EMMA and DIY applications. Nevertheless, the study indicated that the complementary use of tracer analysis in EMMA can increase the confidence in conceptual model structure. However, conclusions are restricted to the specific spatial and temporal scales examined. Copyright © 2003 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Soulsby, Chris Dunn, Sarah M. |
spellingShingle |
Soulsby, Chris Dunn, Sarah M. Towards integrating tracer studies in conceptual rainfall‐runoff models: recent insights from a sub‐arctic catchment in the Cairngorm Mountains, Scotland |
author_facet |
Soulsby, Chris Dunn, Sarah M. |
author_sort |
Soulsby, Chris |
title |
Towards integrating tracer studies in conceptual rainfall‐runoff models: recent insights from a sub‐arctic catchment in the Cairngorm Mountains, Scotland |
title_short |
Towards integrating tracer studies in conceptual rainfall‐runoff models: recent insights from a sub‐arctic catchment in the Cairngorm Mountains, Scotland |
title_full |
Towards integrating tracer studies in conceptual rainfall‐runoff models: recent insights from a sub‐arctic catchment in the Cairngorm Mountains, Scotland |
title_fullStr |
Towards integrating tracer studies in conceptual rainfall‐runoff models: recent insights from a sub‐arctic catchment in the Cairngorm Mountains, Scotland |
title_full_unstemmed |
Towards integrating tracer studies in conceptual rainfall‐runoff models: recent insights from a sub‐arctic catchment in the Cairngorm Mountains, Scotland |
title_sort |
towards integrating tracer studies in conceptual rainfall‐runoff models: recent insights from a sub‐arctic catchment in the cairngorm mountains, scotland |
publisher |
Wiley |
publishDate |
2003 |
url |
http://dx.doi.org/10.1002/hyp.1132 https://onlinelibrary.wiley.com/doi/pdf/10.1002/hyp.1132 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Hydrological Processes volume 17, issue 2, page 403-416 ISSN 0885-6087 1099-1085 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/hyp.1132 |
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Hydrological Processes |
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17 |
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416 |
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1800746861469892608 |