Banca de DEFESA: GIOVANA CRISTINA SANTOS DE MEDEIROS

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : GIOVANA CRISTINA SANTOS DE MEDEIROS
DATA : 16/06/2016
HORA: 09:00
LOCAL: Sala 4I9
TÍTULO:

HYDROLOGICAL DROUGHT EVALUATION METHODOLOGY FROM WATER DEMAND PERSPECTIVE

PALAVRAS-CHAVES:

Hydrological drought. Water demand. Semiarid.

PÁGINAS: 75
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Sanitária
RESUMO:

The proper assessment of hydrologic drought to assist the monitoring of a possible water deficit may be crucial in the adoption of anti-drought attitudes, especially in the semiarid region, where this phenomenon is most frequent. However, traditional methodologies uses standardized dry indices, which do not express its severity in terms of the volume deficit and neither consider water demand as a component of its calculation. In order to overcome these disadvantages, this work presents evaluation methodology of hydrological drought, which determines the volume of water below its demand. It’s can be characterized in function of its duration, severity and magnitude, based on Threshold Level Method. For this purpose, the droughts that occurred between 1997 and 2015 were studied in two reservoirs of different capacities of the Piranhas-Açu River basin. Complementarily, it was used the method of valuation of hydrological drought developed by Araújo & Bronstert (2015) to compare the characteristics of drought events identified by different methods to the same reservoirs. For both methods, the results showed that the reservoir with higher storage capacity is more efficient and thus less susceptible to dry than the smaller. It was found that basic difference between the two approaches is the time analysis of drought events: while the Threshold Level Method is possible to study that occurred in the past to diagnose and make a planning of the use of water in future, the Araújo and Bronstert (2015) method enables the assessment of current conditions to anticipate the start of a hydrologic drought. In this perspective, it is suggested that the two methodologies presented in this paper can be used simultaneously by managers of water resources in order to enable a more comprehensive analysis of drought events in the basin.

MEMBROS DA BANCA:
Presidente - 1759777 - ADELENA GONCALVES MAIA
Externo ao Programa - 2190974 - JOANA DARC FREIRE DE MEDEIROS
Externo à Instituição - JOSEMIR ARAÚJO NEVES - EMPARN
Externo à Instituição - JOSÉ CARLOS DE ARAÚJO - UFC