The use of geoprocessing to assess vulnerability on the east coast aquifers of Rio de Janeiro State,Brazil |
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| Authors: | Vinicius Silva Seabra Jr" target="_blank">Gerson Cardoso da SilvaJr Carla Bernadete Madureira Cruz |
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| Institution: | (1) Departamento de Geologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, CEP 21941-916, Brazil;(2) Departamento de Geografia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, CEP 21945-970, Brazil |
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| Abstract: | The east coast of Rio de Janeiro State, Brazil, shows a worrying overlap between areas with intrinsic groundwater vulnerability
and the most significant urban expansion zones. It experienced a rapid population growth in recent years, mainly due to the
tourism industry, resulting in a significant pressure on drinking groundwater resources. In this regard, development and use
of techniques to control and protect areas susceptible to contamination is crucial. The elaboration of aquifer vulnerability
maps is thus extremely helpful to support water resources management. The aim of the work is to present the methodological
approach in the use of Geoprocessing techniques to obtain a suitable groundwater vulnerability model in Rio de Janeiro east
coast. Considering the existing problems and the current land use and characteristics of the study region, it is clear that
the most vulnerable areas (that is, “extreme” and “very high” vulnerability areas), coincide with the most significant zones
of urban occupation, corresponding to 11% of the total study area, demanding adoption of urgent measures in the near future.
Geoprocessing tools and remote sensing for characterization of Rio de Janeiro’s east coast aquifer vulnerability gave good
results, representing a satisfactory method for management actions at low cost. |
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| Keywords: | Groundwater vulnerability models Coastal aquifers Rio de Janeiro Geoprocessing |
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