18 documents found, page 1 of 2
Integration of managed aquifer recharge into the water supply system in the Alg...
Standen, Kathleen; Costa, Luís; Hugman, Rui; Monteiro, José PauloThe Algarve region of Portugal is experiencing severe water scarcity with existing water supplies insufficient to meet demand, with limited resilience to drought. Managed aquifer recharge (MAR) can provide intermediate storage and bridge the gap between water availability and demand, with success depending on the water available and the aquifer capacity to accept and store the water. We present the results of a...
Integration of managed aquifer recharge into the water supply system in the Alg...
Standen, Kathleen; Costa, Luís; Hugman, Rui; Monteiro, José PauloThe Algarve region of Portugal is experiencing severe water scarcity with existing water supplies insufficient to meet demand, with limited resilience to drought. Managed aquifer recharge (MAR) can provide intermediate storage and bridge the gap between water availability and demand, with success depending on the water available and the aquifer capacity to accept and store the water. We present the results of a...
Decision-support groundwater modelling of managed aquifer recharge in a Coastal...
Standen, Kathleen; Hugman, Rui; Monteiro, José PauloThe Vale do Lobo sector of the Campina de Faro aquifer system in the Algarve (Portugal) is at risk of seawater intrusion. Managed Aquifer Recharge (MAR) is being considered to avoid groundwater quality deterioration. Numerical modelling was undertaken to assess the feasibility of several proposed MAR schemes. Although some data is available, many aspects of system behaviour are not well understood or measured. ...
Predicting the impact of management and climate scenarios on groundwater nitrat...
Costa, Luis; Hugman, Rui; Stigter, Tibor Y.; Monteiro, José PauloThe dynamics related to evolution of nitrate-contaminated groundwater are analyzed with focus on the impact of intrinsic aquifer properties, agricultural activities and restoration measures at Campina de Faro aquifer (M12), southern Portugal. Agricultural practices in the region developed in the 1970s and resulted in high abstraction rates, nitrate contamination and salinization. Despite the implementation of t...
The impact of atmospheric teleconnections on the coastal aquifers of Ria Formos...
C. Neves, Maria; Costa, Luis; Hugman, Rui; P. Monteiro, J.Fluctuations in groundwater level in the Ria Formosa coastal aquifers, southern Portugal, owe 80% of the variability to climate-induced oscillations. Wavelet coherences computed between hydraulic heads and the North Atlantic Oscillation (NAO) and East Atlantic (EA) atmospheric teleconnections show nonstationary and spatially varying relationships. The NAO is the most important teleconnection and the main driver...
Combined assessment of climate change and socio-economic development as drivers...
Stigter, Tibor Y.; Varanda, Marta; Bento, Sofia; Nunes, Joao Pedro; Hugman, RuiA combined assessment of the potential impacts from climate change (CC) and socio-economic development (SED) on water resources is presented for the most important aquifer in the south of Portugal. The goal is to understand how CC and SED affect the currently large pressures from water consuming and contaminating activities, predominantly agriculture. Short-term (2020-2050) and long-term (2070-2100) CC scenario...
Modeling nitrate-contaminated groundwater discharge to the Ria Formosa Coastal ...
Hugman, Rui; Stigter, Tibor; Costa, Luis; Monteiro, José PauloA numerical flow and transport model is developed to assess groundwater discharge and nutrient transport to the Ria Formosa coastal lagoon in southern Portugal. A total N load of 350 ton/year is estimated for the considered area, of which agriculture accounts for 73% of total N load, and domestic effluent and atmospheric deposition for the remaining 9% and 18% respectively. Model results suggest that nutrient r...
Numerical approaches to simulate groundwater flow and transport in coastal aqui...
Hugman, RuiNumerical models of varying scales and degree of complexity are developed to study issues, directly or indirectly, related to coastal aquifer management in the Algarve (south of Portugal).
Numerical modelling assessment of climate-change impacts and mitigation measure...
Hugman, Rui; Stigter, Tibor; Costa, Luis; Monteiro, José PauloPredicted changes in climate will lead to seawater intrusion in the Querença-Silves (QS) coastal aquifer (south Portugal) during the coming century if the current waterresource-management strategy is maintained. As for much of the Mediterranean, average rainfall is predicted to decrease along with increasing seasonal and inter-annual variability and there is a need to understand how these changes will affect th...
Coastal lagoons and their watersheds as GWDE: a case study in the southwest coa...
Chambel, António; Chainho, Paula; Félix, Pedro M; Correia, Maria João; Fernandes, Carla M; Costa, José Lino; Chaves, Maria Luísa; Stigter, TiborThe study of groundwater dependent ecosystems opened the opportunity to involve specialists of different areas of knowledge in order to obtain answers for complex interrelations between groundwater and the associated ecosystems. The actual study, carried out in two coastal lagoons of the Portuguese SW coast, showed the high dependency of the marine life and vegetation of the lagoons and associated streams disch...