Assessment of two different methods in predicting hydrological drought from the perspective of water demand

Medeiros, Giovana Cristina Santos de; Maia, Adelena Gonçalves; Medeiros, Joana Darc Freire de

Assessment of two different methods in predicting hydrological drought from the perspective of water demand

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dc.contributor.author	Medeiros, Giovana Cristina Santos de
dc.contributor.author	Maia, Adelena Gonçalves
dc.contributor.author	Medeiros, Joana Darc Freire de
dc.date.accessioned	2020-09-30T18:36:30Z
dc.date.available	2020-09-30T18:36:30Z
dc.date.issued	2019
dc.description.resumo	The traditional methodologies to determine hydrologic drought use standardized drought indexes, which do not express a drought’s severity in terms of the volume deficit and do not consider water demand as a component of its calculation. To overcome these disadvantages, this work presents a method for the assessment of hydrological drought that determines the volume of water below its demand. A drought can be characterized by its duration, severity and magnitude, using the Threshold Level Method. Complementarily, the method for the assessment of hydrological drought developed by Araújo and Bronstert (2016) was used to compare the characteristics of drought events in the same reservoirs. For this purpose, the droughts that occurred between 1997 and 2015 were studied in two reservoirs in the Piranhas-Açu River basin (Brazil). For both methodologies, the results showed that the reservoir with a higher storage capacity is more efficient and, thus, less susceptible to drought than the smaller. It was found that the basic difference between the two approaches is the time analysis of drought events: while the Threshold Level Method makes it possible to study what occurred in the past to diagnose and plan the use of water in the future, the other method enables the assessment of current conditions to anticipate the start of a hydrologic drought. It is suggested that the two methodologies presented can be used simultaneously by water resource managers to enable a more comprehensive analysis of drought events in the basin	pt_BR
dc.identifier.citation	MEDEIROS, G.C.S.; MAIA, A. G.; MEDEIROS, J. D. F.. Assessment of two different methods in predicting hydrological drought from the perspective of water demand. Water Resources Management, v. 33, p. 1851-1865, 2019. Disponível em: https://link.springer.com/article/10.1007%2Fs11269-019-02218-7. Acesso em: 22 Set. 2020. https://doi.org/10.1007/s11269-019-02218-7	pt_BR
dc.identifier.doi	10.1007/s11269-019-02218-7
dc.identifier.issn	0920-4741
dc.identifier.issn	1573-1650
dc.identifier.uri	https://repositorio.ufrn.br/handle/123456789/30223
dc.language	en	pt_BR
dc.publisher	Springer	pt_BR
dc.rights	Attribution 3.0 Brazil	*
dc.rights.uri	http://creativecommons.org/licenses/by/3.0/br/	*
dc.subject	Threshold level method	pt_BR
dc.subject	Water shortage	pt_BR
dc.subject	Semiarid	pt_BR
dc.subject	Water resources	pt_BR
dc.title	Assessment of two different methods in predicting hydrological drought from the perspective of water demand	pt_BR
dc.type	article	pt_BR