INVESTIGADORES
RODRIGUEZ Andres
artículos
Título:
Identificación y Caracterización de Sequías Hidrológicas en
Autor/es:
ERICA DIAZ; A RODRIGUEZ; O DOLLING; JC BERTONI
Revista:
Ciencia y Tecnologia del Agua
Editorial:
IMTA
Referencias:
Lugar: Mexico; Año: 2016
ISSN:
0187-8336
Resumen:
It is essential to know the behavior of the hydrological resources available in space and time in order to provide adequate planning and management of the hydrological resources. And droughts are relatively complex phenomena that affect the development and use of the hydrological resources in one region (Fernández, 1997). The aim of this study is to identify and characterize temporally and spatially hydrological droughts in the Central and Northern regions of the Argentine Republic so as to assess the regional water availability; an essential component of water management. The basins that have been analyzed are: the Río Calamuchita, Río Xanaes, Río Suquía, Río Dulce and Río Juramento(analyzed through contributions to the Dams: Río Tercero, Los Molinos, San Roque, Río Hondo, and Cabra Corral respectively) and Río Colorado, Río Paraná, Río Anisacate, Río Bermejo and Río Pilcomayo. The data analyzed belongs to the time period 1906-2010 and the length of the series is variable (between 50 and 150 facts).The methodology chosen is based on the proposal made by Fernández (1997), who uses the definition proposed by Yevjevich (1967), according to which, given a time series representing water supply and another representing demand, a succession of periods where supply does not meet demand can be considered a drought. The offer is represented by the series of annual contributions available on the different basins, while the demand is defined as annual flows for different probabilities of exceedance. Droughts detected in each basin are characterized in terms of their properties of duration, magnitude and average and maximum intensity. The spatial and temporal analysis of drought is supported by a matrix whose rows correspond to the basin geographical location (north-south), and the columns are arranged chronologically; drought thresholds are identified with different color scales. A spatial and temporal clustering of the periods of excess and water deficit has been observed in the region