General calibration methodology for a combined Horton-SCS infiltration scheme in flash flood modeling
Flood forecasting undergoes a constant evolution, becoming more and more demanding about the models used for hydrologic simulations. The advantages of developing distributed or semi-distributed models have currently been made clear. Now the importance of using continuous distributed modeling emerges...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2008-12-01
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| Series: | Natural Hazards and Earth System Sciences |
| Online Access: | http://www.nat-hazards-earth-syst-sci.net/8/1317/2008/nhess-8-1317-2008.pdf |
| _version_ | 1818065880211259392 |
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| author | S. Gabellani F. Silvestro R. Rudari G. Boni |
| author_facet | S. Gabellani F. Silvestro R. Rudari G. Boni |
| author_sort | S. Gabellani |
| collection | DOAJ |
| description | Flood forecasting undergoes a constant evolution, becoming more and more demanding about the models used for hydrologic simulations. The advantages of developing distributed or semi-distributed models have currently been made clear. Now the importance of using continuous distributed modeling emerges. A proper schematization of the infiltration process is vital to these types of models. Many popular infiltration schemes, reliable and easy to implement, are too simplistic for the development of continuous hydrologic models. On the other hand, the unavailability of detailed and descriptive information on soil properties often limits the implementation of complete infiltration schemes. In this work, a combination between the Soil Conservation Service Curve Number method (SCS-CN) and a method derived from Horton equation is proposed in order to overcome the inherent limits of the two schemes. The SCS-CN method is easily applicable on large areas, but has structural limitations. The Horton-like methods present parameters that, though measurable to a point, are difficult to achieve a reliable estimate at catchment scale. The objective of this work is to overcome these limits by proposing a calibration procedure which maintains the large applicability of the SCS-CN method as well as the continuous description of the infiltration process given by the Horton's equation suitably modified. The estimation of the parameters of the <i>modified</i> Horton method is carried out using a formal analogy with the SCS-CN method under specific conditions. Some applications, at catchment scale within a distributed model, are presented. |
| first_indexed | 2024-12-10T14:58:55Z |
| format | Article |
| id | doaj.art-e493cd49861442cb89281e9c72def46d |
| institution | Directory Open Access Journal |
| issn | 1561-8633 1684-9981 |
| language | English |
| last_indexed | 2024-12-10T14:58:55Z |
| publishDate | 2008-12-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Natural Hazards and Earth System Sciences |
| spelling | doaj.art-e493cd49861442cb89281e9c72def46d2022-12-22T01:44:13ZengCopernicus PublicationsNatural Hazards and Earth System Sciences1561-86331684-99812008-12-018613171327General calibration methodology for a combined Horton-SCS infiltration scheme in flash flood modelingS. GabellaniF. SilvestroR. RudariG. BoniFlood forecasting undergoes a constant evolution, becoming more and more demanding about the models used for hydrologic simulations. The advantages of developing distributed or semi-distributed models have currently been made clear. Now the importance of using continuous distributed modeling emerges. A proper schematization of the infiltration process is vital to these types of models. Many popular infiltration schemes, reliable and easy to implement, are too simplistic for the development of continuous hydrologic models. On the other hand, the unavailability of detailed and descriptive information on soil properties often limits the implementation of complete infiltration schemes. In this work, a combination between the Soil Conservation Service Curve Number method (SCS-CN) and a method derived from Horton equation is proposed in order to overcome the inherent limits of the two schemes. The SCS-CN method is easily applicable on large areas, but has structural limitations. The Horton-like methods present parameters that, though measurable to a point, are difficult to achieve a reliable estimate at catchment scale. The objective of this work is to overcome these limits by proposing a calibration procedure which maintains the large applicability of the SCS-CN method as well as the continuous description of the infiltration process given by the Horton's equation suitably modified. The estimation of the parameters of the <i>modified</i> Horton method is carried out using a formal analogy with the SCS-CN method under specific conditions. Some applications, at catchment scale within a distributed model, are presented.http://www.nat-hazards-earth-syst-sci.net/8/1317/2008/nhess-8-1317-2008.pdf |
| spellingShingle | S. Gabellani F. Silvestro R. Rudari G. Boni General calibration methodology for a combined Horton-SCS infiltration scheme in flash flood modeling Natural Hazards and Earth System Sciences |
| title | General calibration methodology for a combined Horton-SCS infiltration scheme in flash flood modeling |
| title_full | General calibration methodology for a combined Horton-SCS infiltration scheme in flash flood modeling |
| title_fullStr | General calibration methodology for a combined Horton-SCS infiltration scheme in flash flood modeling |
| title_full_unstemmed | General calibration methodology for a combined Horton-SCS infiltration scheme in flash flood modeling |
| title_short | General calibration methodology for a combined Horton-SCS infiltration scheme in flash flood modeling |
| title_sort | general calibration methodology for a combined horton scs infiltration scheme in flash flood modeling |
| url | http://www.nat-hazards-earth-syst-sci.net/8/1317/2008/nhess-8-1317-2008.pdf |
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