渤海海冰现场监测的数字图像技术及其应用
A digital image technology and its application for the sea ice field observation in the Bohai Sea
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摘要: 在渤海冰区油气开发中,海冰给平台结构、油气运输和施工作业带来很大影响。油气作业区海冰参数精确、连续、实时的现场监测对分析油气开发的可靠性、检验海冰数值模式、校正海冰卫星遥感数据具有重要意义。针对渤海油气作业区的海冰运动和分布特性,通过数字图像技术对海冰的厚度、运动速度和密集度三个参数的提取进行了算法开发和软件研制。在2009-2010年采用该海冰数字图像监测软件对渤海辽东湾JZ20-2油气作业区的海冰参数进行了全冰期的连续监测,获得了翔实可靠的海冰厚度、密集度和冰速等海冰监测资料。现场监测应用表明,该海冰数字图像监测软件具有操作性强、精确度高、可靠性好的优点。该监测技术进一步完善后可广泛应用于渤海油气作业区的海冰现场监测,成为海冰业务化现场监测的重要组成部分。Abstract: Sea ice has negative influences on the oil/gas platform structure, the nautical transportation and the construction operation during the ice-covered season in the Bohai Sea. The accurate, continuous and real-time field observation of sea ice parameters is very important for the reliability analysis of oil exploration,the validation of sea ice numerical model and the revision of satellite remote sensing data. A digital image processing technology was adopted to obtain the sea ice parameters according to the dynamic distribution characteristics of sea ice in the oil exploration areas of the Bohai Sea. A precise algorithm and an effective software system were developed to determine the ice thickness, the ice velocity and the ice concentration, respectively. In the winter of 2009—2010, this sea ice digital processing program was utilized to observe the ice parameters in the JZ20-2 oil field of Bohai Sea. The ice parameters of thickness, concentration and velocity were obtained of the whole winter. With the field observations, it can be found that the sea ice digital processing program developed has the advantages of convenient operation and high accuracy reliability. With further improvements, it can be an important portion of the field observation of sea ice in the Bohai Sea.
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