Libros y Partes de Libro

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https://digital.cic.gba.gob.ar/handle/11746/5687

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Examinando Libros y Partes de Libro por Autor "Kruse, Eduardo"

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  • Parte de libro
    Embargado
    Critical Problems for the freshwater supply to summer resorts on the Eastern Coast of the Buenos Aires Province, Argentina
    (2012) Kruse, Eduardo; Carretero, Silvina; Pousa, Jorge; Guaraglia, Dardo; Rossi, A.; Miranda, L
    Since the middle of the twentieth century , the eastern coast of theBuenosAiresProvince, Argentina , has experienced a strong demographic growth that posed increasing requirements on the supply of freshwater. This was accompanied by a rather chaotic urbanization process and the expansion of human activities, particularly those related with the numerous summer resorts located there. In this region, the only natural source for the supply of freshwater to the inhabitants is the groundwater stored in lens-shaped reservoirs located in the coastal sandy barrier. With a mean hydraulic conductivity between IO and 20 mid, an effective porosity of more than I 0%, and a narrow thickness of the unsaturated zone (2-4 m), these reservoirs are highly vulnerable to pollution, pa11icularly from nitrates of anthropic origins (over 50 mg/L at some locations). In addition, an intensive exploitation of these aquifers can lead to a strongdrawdown, with the consequent threat of saltwater encroachment that will eventually force some production wells to be abandoned. This, in fact , has already happened. A suitable running of groundwater resources should thus take account of people's demand, an adequate freshwater supply, and the natural balance of thehydrologiccycle. Such management must consider the choice of new groundwater catchments and a land-use planning that includes the environmental protection of freshwater reserves. San ClementedelTuyu, one of the summer resort towns, is presented as a local sustainable case of groundwater management. Although the study area has general uniform geologic andgeomorphologiccharacteristics, there are, however,local differences. The resort towns located along the coast should therefore take account of these differences in designing their own groundwater management systems.
  • Parte de libro
    Embargado
    Interrelation between Coastal Processes Surface Water and Groundwater at the Outer Coastal Region of the Rio de la Plata Estuary, Argentina
    (2011) Pousa, Jorge; Kruse, Eduardo; Carol, Eleonora S.; Carretero, Silvina; Guaraglia, Dardo
    The outer coastal region of the Rio de la Plata estuary, Argentina, presents two adjacent, yet different environments: the Samborombon Bay wetland and a dune barrier system on the eastern sandy coastline of the Province of Buenos Aires. These environments have their own characteristics as regards the interrelation between coastal processes, surface water and groundwater. Though in a different degree, both environments have undergone salt water encroachment of the phreatic aquifer, coastal erosion and relative sea level rise processes due to natural and anthropic factors. Coastal areas have been exposed to a variety of hazards, such as salinization, severe storm surges, high frequency and degree of flooding and littoral erosion processes. Human activities, such as beach sand mining, dune fixation and destruction, construction of coastal structures and exploitation of aquifers without an adequate knowledge of the hydrology setting and a rational management program, have worsen these natural hazards. Uncontrolled anthropic action has induced environmental damage to the overall coastal dune barrier system and plains. The Samborombon Bay wetland and the beach dune system environments play an important role with respect to the social and economic development based on agriculture, cattle-raising, fishing and tourism. Results of investigations on saltwater contamination, sea level rise, storm surges, erosion processes and morphological changes recently performed in these two coastal environments are presented here. Future possible scenarios are briefly considered within the context of climate change. Potentially methods for measuring groundwater flux in the sandy environment are discussed as regards their applicability to the study area.