An alternative approach in hydrograph decomposition and separation of the baseflow

Title:

An alternative approach in hydrograph decomposition and separation of the baseflow

Creator:

Aguilar, Victor Manuel Salas , Gómez, Víctor Reyes, and Pellat, Fernando Paz

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:f9ef5927-fecc-4c24-92c3-4f13a5ba1060
uuid:f9ef5927-fecc-4c24-92c3-4f13a5ba1060
doi:10.1515/johh-2017-0035

Subject:

recession curve, groundwater discharge, expo-linear model, and reservoir

Type:

article, model:article, and TEXT

Description:

The identification of the moment when direct flow ends and baseflow begins is one of the biggest challenges of hydrological cycle modeling. The objectives of this research were: to characterize the recession curves (RC) and to separate the components of the hydrograph in a compact model. The RC were extracted from time series in three subwatersheds in Mexico. An expo-linear model was adapted and fitted to the master recession curves to find the transition point of the hydrograph and separate the baseflow. The model discriminated the RC in two decreasing ratios: one linear associated to the direct flow, and one exponential linked to the baseflow. The transition point between these two flows was obtained analytically by equaling both ratios. The derivation of a model parameter allowed to find the maximum points in the hydrometric time series, which were the criterion to separate the baseflow. The application of this model is recommended in the analysis of RC with different magnitudes from the flexibility and attachment to the fundaments of exhaustion of a reservoir.

Language:

Slovak

Rights:

http://creativecommons.org/publicdomain/mark/1.0/
policy:public

Source:

Journal of hydrology and hydromechanics | 2017 Volume:65 | Number:4

Harvested from:

CDK

Metadata only:

false