DEGEO - Departamento de Geologia
URI permanente desta comunidadehttp://www.hml.repositorio.ufop.br/handle/123456789/8
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Resultados da Pesquisa
Item Public policies for negotiated water allocation : a dialogue between Thailand and Brazil.(2015) Vasconcelos, Vitor Vieira; Koontanakulvong, Sucharit; Martins Júnior, Paulo Pereira; Hadad, Renato MoreiraThis paper presents the authors’ reflections regarding the collaborative studies and discussions on water resources among researchers from Thailand and Brazil. First, the similarities and differences between the countries regarding water resource management and policies are noted. Subsequently, the experiences and challenges of both countries in the negotiated allocation of water resources are discussed. Finally, the researchers comment on the current proposed draft of Thailand’s water law based on the experience in Brazil.Item Analysis of spatial–temporal patterns of water table change as a tool for conjunctive water management in the Upper Central Plain of the Chao Phraya River Basin, Thailand.(2014) Vasconcelos, Vitor Vieira; Koontanakulvong, Sucharit; Suthidhummajit, Chokchai; Martins Junior, Paulo Pereira; Hadad, Renato MoreiraA sustainable strategy for conjunctive water management must include information on the temporal and spatial availability of this natural resource. Because of water shortages in the dry seasons, farmers on the Upper Plain of the Chao Phraya River basin, Thailand, are increasingly using groundwater to meet their irrigation needs. To evaluate the possibilities of conjunctive water management in the area, the spatial–temporal changes in the water table of the Younger Terrace Aquifer were investigated. First, a regional geomorphological map based on field surveys, remote sensing and previous environmental studies was developed. Then, the well data were analyzed in relation to rainfall, streamflow, yield and pumpage, and the data were interpolated using geostatistical techniques. The results were analyzed via integrated zoning based on color theory as applied to multivariate visualization. The analysis results indicate areas that would be more suitable for groundwater extraction in a conjunctive management framework with regard to the natural hydrogeological processes and the effects of human interaction. The kriging results were compared with the geomorphological map, and the geomorphological areas exhibit distinct hydrogeological patterns. The western fans exhibit the best potential for the expansion of conjunctive use, whereas the borders of the northern fans exhibit the lowest potential.Item Aquifer recharge : epistemology and interdisciplinarity.(2013) Vasconcelos, Vitor Vieira; Martins Júnior, Paulo Pereira; Hadad, Renato Moreira; Koontanakulvong, SucharitThe environmental issues related to aquifer recharge and discharge present challenges that require an interdisciplinary approach. This paper reports an epistemological study on the contribution of different fields of knowledge to the research on hydrogeological processes. The study is based on the hypothesis that this dialog is essential to the resolution of current and future environmental problems, including those related to water use. The first proposition is to discuss epistemological and information management approaches that may contribute to a better spatial, qualitative and quantitative characterization of aquifer recharge. Preliminary conceptual models are developed to demonstrate the possibilities of interdisciplinary collaboration to solve the environmental issues presented here. The paper concludes with a discussion of the possibilities of incorporating knowledge on aquifer recharge into environmental and water resources policies.