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Utilidade e forma de tratamento dos dados dos udógrafos na monitorização de ribeiras para a prevenção do risco de aluviões
| Name: | Description: | Size: | Format: | |
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| 7.94 MB | Adobe PDF |
Authors
Abstract(s)
O presente trabalho académico focou-se em dois grandes objetivos. Por um lado focou-se na investigação do funcionamento dos udógrafos como equipamentos de monitorização de precipitação bem como o contributo indispensável que os mesmos proporcionam, em conjunto com outros equipamentos e outras ferramentas, como dispositivo de alerta para uma eventual ocorrência de aluvião. Por outro lado, focou-se no tratamento e análise dos dados monitorizados pelos mesmos equipamentos.
A investigação dos equipamentos baseou-se no estudo de diferentes soluções de equipamentos, analisando as suas vantagens e desvantagens. Foi descrito a forma de funcionamento de alguns modelos de udógrafos e sucintamente o funcionamento dos satélites e dos radares meteorológicos, revelando-se estes últimos, como os mais eficientes para a prevenção de aluviões. O estudo dos equipamentos deu maior destaque ao funcionamento dos udógrafos de recetáculo basculante.
O tratamento dos dados udográficos efetuado neste trabalho baseou-se na criação de folhas de cálculo em Excel para a organização, tratamento e análise das séries de dados. Inicialmente estava previsto o tratamento de dados de nove postos udográficos pertencentes à rede udográfica do Laboratório Regional de Engenharia Civil (LREC), contudo posteriormente um dos postos foi excluído devido à elevada percentagem de lacunas que continha.
Após a organização dos dados, procedeu-se à colmatação das lacunas existentes nas séries e posteriormente à análise da qualidade das mesmas séries de dados. Finalmente foram analisadas as séries de dados recorrendo a gráficos e ao Software ArcGIS for Desktop versão 10.4 da Environmental Systems Research Institute (ESRI).
This academic work has focused on two main objectives. On the one hand, focused on the investigation of the operation of udógrafos as precipitation monitoring equipment and the essential contribution that they provide in conjunction with other equipment and other tools, as a warning device for a possible occurrence of flash floods. On the other hand, focused on the treatment and analysis of data monitored by the same equipment. The research of the equipment was based on the study of different equipment solutions, discuss their advantages and disadvantages. It has been described the operating mode of some diferentes rain gauges models. It was also described briefly the operation of weather satellites and radar, revealing the latter as the most efficient for the prevention of flash floods. The equipment of the study gave greater prominence to the functioning was tipping bucket rain gauge. Treatment of rain gauge data carried out in this work was based on the creation of Excel spreadsheets for organizing, processing and analysis of the data series. Initially was planned to analyse nine data series of nine rain gauges stations belonging to the rain gauge network of Regional Civil Engineering Laboratory (LREC), but then one of the stations was excluded due to high percentage of gaps contained. After the organization of the data, it proceeded to filling gaps in the series and after the analysis of the quality of the same data series. Finally we analyzed the data series using graphics, and ArcGIS for Desktop software version 10.4 of the Environmental Systems Research Institute (ESRI).
This academic work has focused on two main objectives. On the one hand, focused on the investigation of the operation of udógrafos as precipitation monitoring equipment and the essential contribution that they provide in conjunction with other equipment and other tools, as a warning device for a possible occurrence of flash floods. On the other hand, focused on the treatment and analysis of data monitored by the same equipment. The research of the equipment was based on the study of different equipment solutions, discuss their advantages and disadvantages. It has been described the operating mode of some diferentes rain gauges models. It was also described briefly the operation of weather satellites and radar, revealing the latter as the most efficient for the prevention of flash floods. The equipment of the study gave greater prominence to the functioning was tipping bucket rain gauge. Treatment of rain gauge data carried out in this work was based on the creation of Excel spreadsheets for organizing, processing and analysis of the data series. Initially was planned to analyse nine data series of nine rain gauges stations belonging to the rain gauge network of Regional Civil Engineering Laboratory (LREC), but then one of the stations was excluded due to high percentage of gaps contained. After the organization of the data, it proceeded to filling gaps in the series and after the analysis of the quality of the same data series. Finally we analyzed the data series using graphics, and ArcGIS for Desktop software version 10.4 of the Environmental Systems Research Institute (ESRI).
Description
Keywords
Precipitação Série de dados Udógrafo Udógrafo de recetáculo basculante Precipitação diária máxima anual Precipitation Time series Rain gauge Tipping bucket rain gauge Anual maximim daily rainfall Engenharia Civil . Faculdade de Ciências Exatas e da Engenharia