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Navegando por Assunto "Erosão de praias - Pará"

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    Análise de perdas econômicas geradas pela erosão em ambiente praiano: caso da praia de Ajuruteua – Bragança/PA
    (Universidade Federal do Pará, 2018) RODRIGUES, Hygson da Silva; LIMA, Aline Maria Meiguins de; http://lattes.cnpq.br/6572852379381594
    The beach of Ajuruteua-PA, 36 km from the municipality seat of Bragança-Pará, has undergone constant morphological transformations due to the process of marine erosion. Such erosions have been causing disasters during periods of full tide (equinox and syzygy). In addition, the lack of planning in the management of the use and occupation of the territory caused several environmental consequences and the quality of life of the population. The objective of this work was to estimate the economic losses directly and indirectly generated by water erosion, through the Cost of Replacement Method (MVCR), and to contribute to the actions of civil defense in dealing with natural disasters. It also aims to collaborate with the planning and actions of public policies in order to avoid further harm to the population at risk, as well as to propose improvements for environmental management, the issue of territorial reordering and the social confrontation related to natural disasters. A questionnaire and checklist applied to a random sample of housing units can assess the costs of losses and damages caused by the phenomenon, as well as the application of the MVRC to analyze the losses for recovery / reconstruction or the total loss of the property without the recovery of the damage. The results indicate that there are many attempts to contain erosion along the coastline of Ajuruteua Beach, but these do not provide definitive solutions to the problem. Therefore, it is necessary to consider measures that reduce the exposure to the risk of facing disasters and prevent losses or high costs with the recovery, reconstruction or reallocation of properties and families that are resident in the region. The average Replacement Cost (CR) of the 81 buildings located in the tidal range, considering the average Internal Unit Cost (CUi) of R$ 34.708,76 and the Average External Unit Cost (CUe) of R$ 43.388,63; was R$ 6.325.889,40. Indicating that socioeconomic losses can be significant, and should be rethought in the direction of the management of coastal space.
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    Carta de aptidão à urbanização: proposta de ordenamento territorial frente aos processos erosivos na orla marítima das praias do Crispim e de Marudá no município de Marapanim-PA
    (Universidade Federal do Pará, 2018-02-07) MELLO, Loury Bastos; SZLAFSZTEIN, Claudio Fabian; lattes.cnpq.br/1348005678649555
    Natural disasters have considerably increased considerably in the last decades, and consequently, the number of affected and the volume of damages impacts. Following the increase in population, the cities located in the Coastal Zone of Paraense (ZCP), as well as in the big cities, develop populations of high socioeconomic vulnerability exposed to recurrent natural processes increasingly, such as tides, breakers and erosion. The studies focused on the coastal dynamics with emphasis on socioeconomic aspects in Brazil begin to advance after the approval of Federal Law 7,661 / 88 of the National Coastal Management Plan (PNGC). The ZCP characterized by a regime of macrotidal and estuarine plains, has been the target of natural disasters of great intensity, which are becoming more and more recurrent. In an attempt to provide an improvement in the quality of life of the population living on the Marudá and Crispim coastlines, and to minimize the recurrent damages that affect the seafront of these beaches, this research proposes the development of the suitability chart to urbanization from the mapping of areas with high, medium and low susceptibility, hazard and vulnerability to coastal erosion. Were indicated suitable areas, suitable trough interventions, and areas not suitable to urbanization, and this product will serve as a subsidy to the public policies of management and territorial planning in the ZC of the Marapanim city. The approach consists of: bibliographical compilation and published data; definition of analyzed variables; analysis and acquisition of satellite images; field campaign; classification of variables in units; quantification each unit according to its vulnerability, danger or susceptibility; elaboration of the vectorial spectrum of each variable and its respective units; transformation of these vectors into raster data; multicriteria analysis from GIS environment modeling (AHP); vulnerability mapping; hazard mapping; and integration of the maps obtained and final elaboration of the suitable chart to urbanization through map algebra. Areas of low, medium and high risk and vulnerability were found in Crispim and Marudá, the region most affected by erosion processes, being this area analogous to the region with the highest signs of damage generated in high magnitude events, shoreline and beach profile variation. The areas of greatest vulnerability are determined, mainly by the regions with the highest indexes of exposure to coastal processes and low construction kind. The data obtained in this work are considered extremely useful for adaptations in the region of study, as containment construction to the marine advance, as well as a detailed management of the environments found in the scenario of global climate change. Thus, it will be possible to plan adequately the use, occupation and adaptation of this coastal region, using, above all, the individualities of each area.
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    Ecologia da paisagem da ilha do Mosqueiro, NE do estado do Pará.
    (Universidade Federal do Pará, 2005-06) SALES, Gil Mendes; BORGES, Maurício da Silva; http://lattes.cnpq.br/1580207189205228
    This work investigated the physical parameters of the model of landscape of the Island of the Mosqueiro, in the Northeast of the State of Pará, in the Amazon region, using itself of investigative strategies that allowed insertions in the ambient order. In this chance the activities in the area of the geoprocessing. In the ambient context had been privileged this work present products of integration and other unknown ones whose idea is of instrumentalizer the local governmental politics, aiming at to contribute for improvement of the relation of the model of antropic occupation of the landscape versus maintenance of the quality and ambient preservation, in view of the necessity of if establishing a structure of adequate development to the current scenes. The importance of the District of Mosqueiro for Belém is unquestionable. Its history and tourist potential are peculiar; beyond the one that the island if establishes as important component to the social life, artistic, cultural and sporting of the majority of the population that composes the great Belém. To the long one of the time, the Island of the Mosqueiro was scene of many landscapes transformations. The performance of litologics, pedologics local factors as to those of order, of relief and, more recently, antropics, is used to explain the current arrangement of the landscape. In this direction the ecology of the landscape is presented as important boarding integrator for the search for the agreement of the Neogenic evolution. Inside of the flowing varied ones of studies on the shaped one of the landscape, it was opted to multitemporaly evaluating the evolution of the systems natural and constructed (landscape diversity), as well as the unknown application of metric of the landscape quantifying the current landscape situation and its possible future ambient impacts, ahead of the current strategies of occupation. Moreover, it searched integration of different variable as the ground, geology, geomorphology, neotectonic and the vegetal covering and use of the land of the Island of the Mosqueiro, for the attainment of the vulnerable areas the processes that are inserted in the dynamics of the same one, the example of the erosion. Thus, in the conduction of this research in the Island of the Mosqueiro the application sources had involved: geoprocessing; digital processing of images; metric of the landscape; and statistics and algebra of maps. The primordial data to this work had been: images of the Landsat satellite; deriving cartographic products of the aerophotogrammetry survey of Belém-PA; map of detailed ground survey; geology map; and information collected in field. The applicatory ones used for the attainment of the results had been the following ones: SPRING (version 4.0/Windows); ARCVIEW (version 3.3/Windows); SURFER (version 8.0); and FRAGSTATS (version 3.0). Amongst the main results reached in the study of the landscape of the Island of the Mosqueiro, they are distinguished: maps that portray the occupation dynamics (multitemporal analysis); space analysis of the current landscape structure (application of metric of the landscape); evaluation of geomorphology changes; framework current of the tectonic regimen (tectonics imperfections); and, finally, the map of vulnerability to the erosion.
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