Parâmetros texturais de sedimentos para elaboração de Cartas de Sensibilidade Ambiental ao Derramamento de Óleo - Cartas SAO / Sediment Texture Parameters for Elaboration of Environmental Sensitivity Index Maps for Oil Spills. ESI maps

AUTOR(ES)

André Gianotti Stern

DATA DE PUBLICAÇÃO

2007

RESUMO

Oil spills have resulted in increased awareness among government and private agencies regarding studies and techniques to minimize damages caused by this type of accident to environmental and socio-economic resources. The development of techniques and the studies for prevention and response to accidents is intended to achieve greater effectiveness in dealing with this type of contingency and to decrease the environmental and socio-economic damage to the areas affected by oil spills. The Environmental Sensitivity Index Map for Oil Spills (ESI Map) is an important tool that helps to decrease the damage caused to the environment. It is also useful in planning prevention and responding to accidents in storage areas and in transporting hydrocarbons, in ducts, by rail, road, etc. The purpose of the ESI Map is to quantify and qualify certain areas of exposed sediments and sedimentary rocks that are vulnerable or present sensitivity to oil. In other words, stipulate the area and the intrinsic characteristics of the ground that may receive an oil spill, and considering the response actions. The characteristics of existing sediments in vulnerable areas allow the determination of the areas sensitivity. As a result, the study focused on the sedimentary parameters with greatest influence in determining the areas environmental sensitivity, such as granulometry and grain selection, which have an influence in the grounds porosity and permeability, and cross-referencing this information with the declivity of the ground. In order to test the efficiency of these parameters, the study was implemented in the Bacia do Ribeirão do Tamanduá, in the Cravinhos (SP) region, because it intercepts the OSBRA oil pipeline and an area with exposed sandstone from the Botucatu Formation.

ASSUNTO(S)

sedimentary fabric pollution in sediments poluição em sedimentos carta de sensibilidade ambiental derramamento de óleo textura sedimentar oil spill environmental ssnsitivity index map

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