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| Author(s): |
Maurício Ranzini
Total Authors: 1
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| Document type: | Doctoral Thesis |
| Press: | São Carlos. |
| Institution: | Universidade de São Paulo (USP). Escola de Engenharia de São Carlos (EESC/SBD) |
| Defense date: | 2002-06-26 |
| Examining board members: |
Antonio Marozzi Righetto;
Fazal Hussain Chaudhry;
Manuel Enrique Gamero Guandique;
Walter de Paula Lima;
Arthur Mattos
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| Advisor: | Antonio Marozzi Righetto |
| Abstract | |
A physically based semi-distributed model, TOPMODEL, has been applied to one catchment in Cunha, São Paulo, Brazil. The model uses a topographic index which highlights significant hydrological areas within the catchment. The model simulate streamflow and analyse the behaviour of the catchment. The first part of this paper concerns to the first values of calibration parameters, experiments the validity of the premisses of the model, and, mainly, tries to understand how does the hydrology of D catchment works. The results are more efficient on simulation of isolate events than on events of long period. The simulation of hydrology behaviour subject to clear-cutting has showed a diminution of the time of rise and a significant increase of streamflow simulated: from 17 to 44%, in comparaison to D forest catchment. They also show that from 7 to 93% of the streamflow is generated from saturated contributing areas (sources areas). It\'s advisable to avoid clear-cutting. If necessary, the riparian zone has to be preserved; and where they have been destroyed, they have to be recovered urgently. Agricultural lands or grasslands have to use the best management practices, in order to keep the natural conditions of infiltration. (AU) | |