Banca de DEFESA: ALINE DO VALE FIGUEIREDO BARBOSA

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : ALINE DO VALE FIGUEIREDO BARBOSA
DATE: 22/04/2026
TIME: 14:30
LOCAL: Vídeo conferência
TITLE:

THE ROLE OF GROUNDWATER IN MITIGATION OF THE EFFECTS OF DROUGHT AND CLIMATE CHANGE IN THE BRAZILIAN SEMIARID

KEY WORDS:

Hydroclimatology. Water security. Aquifer management. Droughts. Semi-arid regions.

 

PAGES: 80
BIG AREA: Ciências Exatas e da Terra
AREA: Geociências
SUBÁREA: Meteorologia
SPECIALTY: Meteorologia Aplicada
SUMMARY:

The Parnaíba River Basin (PRB) is a strategic water system in northeastern Brazil, essential for urban water supply, agriculture, and energy generation. This study presents an integrated hydro-environmental analysis aimed at evaluating the role of groundwater in sustaining the basin’s streamflow regime. The results reveal marked hydrological seasonality and a substantial contribution of baseflow to total streamflow, with Baseflow Index (BFI) values ranging from 0.75 to 0.80. Trend analyses indicate significant reductions in total streamflow, baseflow, and quickflow, even in the absence of relevant decreasing trends in precipitation. Conversely, rising temperatures, reduced actual evapotranspiration, and a high density of groundwater extraction wells suggest increasing water stress in the basin. Additionally, land use and land cover data reveal significant landscape changes, while aridity index analyses indicate the expansion of semi-arid and arid conditions, particularly over the last two decades. Taken together, these results point to an intensification in the use of natural resources, especially water resources, with potential impacts on aquatic ecosystems, water security, and the sustainability of multiple water uses in the PRB.

COMMITTEE MEMBERS:
Presidente - 2411669 - JONATHAN MOTA DA SILVA
Interno - ***.400.082-** - GABRIEL BRITO COSTA - UFOPA
Interna - 1057105 - SANDRA ISAY SAAD
Externa ao Programa - 1674419 - VERA LUCIA LOPES DE CASTRO - UFRNExterno à Instituição - FABRÍCIO DANIEL DOS SANTOS SILVA - UFAL
Externo à Instituição - LEONARDO MORENO DOMINGUES - UNIFEI