Development of a conceptual model of the hydrologic response of tropical Andean micro-catchments in Southern Ecuador

This paper presents a lumped conceptual model designed for simulating the rainfall runoff response of mountain micro-catchments with natural vegetation located in the south of Ecuador. The conceptual model is mimicking the soil hydrology and consists of a maximum of three linear reservoirs in series...

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Main Author: Feyen, Jan
Format: Artículos
Language:eng
Published: 2017
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Online Access:http://repositorio.educacionsuperior.gob.ec/handle/28000/3823
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spelling oai:localhost:28000-38232017-04-13T08:01:36Z Development of a conceptual model of the hydrologic response of tropical Andean micro-catchments in Southern Ecuador Feyen, Jan HYDROLOGIC TROPICAL ANDEAN SOUTHERN ECUADOR This paper presents a lumped conceptual model designed for simulating the rainfall runoff response of mountain micro-catchments with natural vegetation located in the south of Ecuador. The conceptual model is mimicking the soil hydrology and consists of a maximum of three linear reservoirs in series. A two and three reservoir model structure were tested, respectively A GLUE uncertainty analysis was applied to assess the model performance. Simulation results of the discharge confirmed the applicability of the soil-based conceptual model structure for the selected study areas, during model calibration and validation. The three reservoir model best predicted the runoff; nevertheless the two reservoir model well captures the rainfall-runoff process of the micro-catchments with paramo vegetation. Although differences in climate regime, vegetation, and soil of the selected catchments runoff is strongly controlled by the precipitation and soil type, and the horizons contributing to runoff are defined by their antecedent wetness. Results confirm that the discharge is mainly controlled by lateral subsurface flow through the organic horizons, while during dry conditions the C-horizon and the bedrock mainly contribute to discharge. Lateral transport through the densely rooted top horizon and the litter layer occurs during storm events, being under those conditions the major discharge component. Overland flow is a local phenomenon, negligible in comparison to the other flow components. 2017-04-12T17:47:58Z 2017-04-12T17:47:58Z 2012 article Crespo, P. et al. (2012). Development of a conceptual model of the hydrologic response of tropical Andean micro-catchments in Southern Ecuador. Hydrology and Earth System Sciences. Vol. 9. Alemania. pp. 2475-2510 10275606 http://repositorio.educacionsuperior.gob.ec/handle/28000/3823 eng DOI;10.5194 closedAccess http://creativecommons.org/licenses/by-nc-sa/3.0/ec/ pp. 2475-2510
institution SENESCYT
collection Repositorio SENESCYT
biblioteca Biblioteca Senescyt
language eng
format Artículos
topic HYDROLOGIC
TROPICAL ANDEAN
SOUTHERN ECUADOR
spellingShingle HYDROLOGIC
TROPICAL ANDEAN
SOUTHERN ECUADOR
Feyen, Jan
Development of a conceptual model of the hydrologic response of tropical Andean micro-catchments in Southern Ecuador
description This paper presents a lumped conceptual model designed for simulating the rainfall runoff response of mountain micro-catchments with natural vegetation located in the south of Ecuador. The conceptual model is mimicking the soil hydrology and consists of a maximum of three linear reservoirs in series. A two and three reservoir model structure were tested, respectively A GLUE uncertainty analysis was applied to assess the model performance. Simulation results of the discharge confirmed the applicability of the soil-based conceptual model structure for the selected study areas, during model calibration and validation. The three reservoir model best predicted the runoff; nevertheless the two reservoir model well captures the rainfall-runoff process of the micro-catchments with paramo vegetation. Although differences in climate regime, vegetation, and soil of the selected catchments runoff is strongly controlled by the precipitation and soil type, and the horizons contributing to runoff are defined by their antecedent wetness. Results confirm that the discharge is mainly controlled by lateral subsurface flow through the organic horizons, while during dry conditions the C-horizon and the bedrock mainly contribute to discharge. Lateral transport through the densely rooted top horizon and the litter layer occurs during storm events, being under those conditions the major discharge component. Overland flow is a local phenomenon, negligible in comparison to the other flow components.
author Feyen, Jan
author_facet Feyen, Jan
author_sort Feyen, Jan
title Development of a conceptual model of the hydrologic response of tropical Andean micro-catchments in Southern Ecuador
title_short Development of a conceptual model of the hydrologic response of tropical Andean micro-catchments in Southern Ecuador
title_full Development of a conceptual model of the hydrologic response of tropical Andean micro-catchments in Southern Ecuador
title_fullStr Development of a conceptual model of the hydrologic response of tropical Andean micro-catchments in Southern Ecuador
title_full_unstemmed Development of a conceptual model of the hydrologic response of tropical Andean micro-catchments in Southern Ecuador
title_sort development of a conceptual model of the hydrologic response of tropical andean micro-catchments in southern ecuador
publishDate 2017
url http://repositorio.educacionsuperior.gob.ec/handle/28000/3823
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score 11,871979