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Author (up) Baptista, V.S.G.; Coelho, V.H.R.; Bertrand, G.F.; Silva, G.B.L. da; Caicedo, N.O.L.; Montenegro, S.M.G.L.; Stefan, C.; Glass, J.; Heim, R.; Conrad, A.; Almeida, C. das N.
Title Rooftop water harvesting for managed aquifer recharge and flood mitigation in tropical cities: Towards a strategy of co-benefit evaluations in João Pessoa, northeast Brazil Type Journal Article
Year 2023 Publication Journal of Environmental Management Abbreviated Journal
Volume 342 Issue Pages 118034
Keywords Flood control, Groundwater, Injection well, Stormwater management, Urban drainage, Aquifer storage and recovery
Abstract Intense urbanisation in many coastal areas has led to intensification of groundwater consumption, while reducing permeable areas and increasing the frequency and magnitude of flooding. Among the potential strategies to compensate for these adverse effects, which are expected to become worse as a result of climate change, rooftop rainwater harvesting (RWH) in combination with managed aquifer recharge (MAR), may be indicated. This work investigated the performance of different configurations of such a system, tested as a twofold sustainable stormwater and domestic water management tool in a tropical metropole (João Pessoa, Brazil). This area located over a sedimentary aquifer system illustrates the water security challenges of densely urbanised areas in southern cities. To that end, several configurations of rooftop catchments and storage volumes were evaluated, by simulating a MAR-RWH system connected to the regional unconfined aquifer (Barreiras Formation) through a 6″ diameter injection well. Rainfall-runoff-recharge processes and water balances were simulated using monitored high-temporal resolution rainfall data. The results showed that catchments ranging from 180 to 810 m2, connected to tanks from 0.5 to 30.0 m³, are the optimal solutions in terms of efficient rainwater retention and peak flow reduction. These solutions provided mean annual estimates of aquifer recharge between 57 and 255 m³/yr from 2004 to 2019. The results of this study highlight the opportunity for MAR schemes to reconcile stormwater management and water supply goals.
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ISSN 0301-4797 ISBN Medium
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Call Number THL @ christoph.kuells @ Baptista2023118034 Serial 237
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Author (up) Baram, S.; Ronen, Z.; Kurtzman, D.; Külls, C.; Dahan, O.
Title Desiccation-crack-induced salinization in deep clay sediment Type Journal Article
Year 2013 Publication Hydrology and Earth System Sciences Abbreviated Journal
Volume 17 Issue 4 Pages 1533
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Publisher Copernicus GmbH Place of Publication Editor
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Call Number THL @ christoph.kuells @ Baram2013desiccation Serial 21
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Author (up) Belz, L.; Schüller, I.; Wehrmann, A.; Köster, J.; Wilkes, H.
Title The leaf wax biomarker record of a Namibian salt pan reveals enhanced summer rainfall during the Last Glacial-Interglacial Transition Type Journal Article
Year 2020 Publication Palaeogeography, Palaeoclimatology, Palaeoecology Abbreviated Journal
Volume 543 Issue Pages 109561
Keywords -Alkanes, -Alkanols, Late Quaternary, Organic geochemistry, Palaeohydrology, Southern Africa
Abstract Conventional continental geoarchives are rarely available in arid southern Africa. Therefore, palaeoclimate data in this area are still patchy and late Quaternary climate development is only poorly understood. In the western Kalahari, salt pans (playas, ephemeral lakes) are common and can feature quasi-continuous sedimentation. This study presents the first climate-related biomarker record using sediments from the Omongwa Pan, a Kalahari salt pan located in eastern Namibia. Our approach to reconstruct vegetation and hydrology focuses on biogeochemical bulk parameters and plant wax-derived lipid biomarkers (n-alkanes, n-alkanols, and fatty acids) and their compound-specific carbon and hydrogen isotopic compositions. The presented record reaches back to 27 ka. During the glacial, rather low δ2H values of n-alkanes and low sediment input exclude a strong influence of winter rainfall. n-Alkane and n-alkanol distributions and δ13C values of n-hentriacontane (n-C31) indicate a shift to a vegetation with a higher proportion of C4 plants at the end of the Last Glacial Maximum until the end of Heinrich Stadial I (ca. 18–14.8 ka), which we interpret to indicate an abrupt excursion to a short wetter period likely to be caused by a temporary southward shift of the Intertropical Convergence Zone. Shifts in δ2H values of n-C31 and plant wax parameters give evidence for changes to drier conditions during early Holocene. Comparison of this dataset with representative continental records from the region points to a major influence of summer rainfall at Omongwa Pan during the regarded time span and demonstrates the potential of southern African salt pans as archives for biomarker-based climate proxies.
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ISSN 0031-0182 ISBN Medium
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Call Number THL @ christoph.kuells @ belz_leaf_2020 Serial 104
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Author (up) Benites Lazaro, L.L.; Bellezoni, R.; Puppim de Oliveira, J.; Jacobi, P.R.; Giatti, L.
Title Ten Years of Research on the Water-Energy-Food Nexus: An Analysis of Topics Evolution Type Journal Article
Year 2022 Publication Frontiers in Water Abbreviated Journal
Volume 4 Issue Pages
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Call Number THL @ christoph.kuells @ article Serial 86
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Author (up) Benito, G.; Rohde, R.; Seely, M.; Külls, C.; Dahan, O.; Enzel, Y.; Todd, S.; Botero, B.; Morin, E.; Grodek, T.
Title Management of alluvial aquifers in two southern African ephemeral rivers: implications for IWRM Type Journal Article
Year 2010 Publication Water Resources Management Abbreviated Journal
Volume 24 Issue 4 Pages 641-667
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Publisher Springer Netherlands Place of Publication Editor
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Call Number THL @ christoph.kuells @ Benito2010management Serial 25
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