Navegando por Assunto "Environmental degradation"

Agora exibindo 1 - 2 de 2

Acesso aberto (Open Access)
Construção de um modelo de dispersão de poluentes na Baía do Guajará
(Universidade Federal do Pará, 2005-12-19) BATISTA, Adriano Gomes; SENA, Manoel José dos Santos; http://lattes.cnpq.br/2349287816857909; MESQUITA, André Luiz Amarante; http://lattes.cnpq.br/1331279630816662
The sea and coastal environment of Brazil have suffered a process of considerable environmental degradation in the last years. This degradation was caused by the growing environmental pressure on the sea and the continental natural resources that have overwhelmed the limited capacity of the ecosystems to absorb the impacts. In the specific case of the Bay of Guajará, located in the Estuaries Guajará, in the area delimited by the Bay of Marajó and for the rivers Pará and Guamá, these risks are associated mainly to the pollution originating from of the city of Belém and the petroleum derived pollution caused by transport operations. In the case of the Bay of Guajará, it is known that there are sewer spillings periodically caused by the tide. Because this pollution is caused by the tide, there is little that can be done to correct or soften the effects of this problem. The numeric models consider the complexity of the physical phenomena that govern the operation of the coastal environment, and have been used as tools in hydrodynamic simulation with recognized importance in coastal administration. This application can support several studies: the understanding of the dispersing processes of pollutants; the implantation of systems of monitoring of water quality; the plan of action in cases of a oil spillage; and the effects of alterations in the geometry of channels and bays and estuaries. The objective of this work is to explain these subjects and to describe the necessary stages for the construction of a numeric model of dispersion in the Bay of Guajará using the tools of the Systems of Geographical Information and the Method of Finite Elements.
Acesso aberto (Open Access)
A percepção ambiental dos moradores do entorno do Rio Ariri, Ananindeua/PA
(Universidade Federal do Pará, 2014-01) FREITAS, Odilena de Jesus Moraes; ALMEIDA, Ana Aparecida da Silva; PEREIRA, Ricardo Augusto Gomes
The community near the river in the district Ananindeua- Ariri /Pa. characterized by population growth which resulted in gradual process of deterioration of the river population. This study aimed to analyze the environmental awareness of people living around the river Ariri in Ananindeua, State of Pará, in order to point out the inter-relations man-environmental, the prospects, satisfactions, dissatisfaction and conduct evaluations of the subjects studied. To achieve this goal, the research unfolded exploratory-descriptive with a questionnaire with semi-open questions to 353 individuals. The results show that the uncontrolled growth caused environmental degradation of the river, and the waste produced by the local population constitutes the greatest threat to it’s preservation. This perception suggests an interrelationship between the basic conditions of health and environmental problems, which contributes to a lower quality of life the population surveyed.