A GRA Based Overseas Oil Transportation Risk GIS

Rapid economic development and the accelerating industrialization process lead to our increasing demand for energy. In recent years, the oil resource in the proportion of China's energy structure has a steady increase along with rapid growth in oil imports in China. By 2008 China's oil import dependency had exceeded 50%. Thus ensuring the development and utilization of overseas oil and reducing the risk of oil imports during transportation is significant on the steady growth of China's economy.Development and utilization of overseas oil involve many factors. China's oil import is mainly dependent on marine transportation, and the marine transportation faces many uncertainties. So transportation risks related to many factors from the ports in oil resources country to the port in China during the transportation. Developing an oil transportation risk GIS can largely support decision-making departments to develop reasonable oil transport strategy. Therefore, rational and effective risk assessment for the marine oil transportation is the key to the whole system.This system is involved the various risks as the research object during the process of overseas oil transportation. We first analyze the transportation risk assessment models and evaluation system, then use GRA to establish evaluation model library. Explore the history and current situation of WebGIS at home and abroad based on the architecture and realization. Then use Maplnfo WebGIS for transportation risk macro management and information presentation to achieve human-computer interaction. In the system we design a standardized database system, using SQL Server database with data mining technology to micro-manage a variety of risk indicators.We successfully achieve optimal decisions for overseas transportation options in the system built by WebGIS database, model library and human-computer interaction.