摘要
从海冰带来的严重灾害问题出发,针对传统监测方法的局限性,阐述了遥感技术在海冰灾害监测中的优越性。以渤海海冰为例,提出一种海冰灾害风险等级划分方法,即利用遥感技术和地理信息系统制作经纬度间隔为0.2°的网格,然后得到渤海海冰密集度,选择最大冰密集度、平均冰密集度、冰厚和冰期作为等级划分的指标。根据现场观测和多年调查研究,把海冰灾害风险程度分为3个等级:零风险、低风险和高风险。结果表明:该指标能够反映海冰灾害的风险程度,用该方法描述海冰灾害风险等级可以为海洋预报提供依据。
To avoid the limitations of traditional monitoring approaches, remote sensing technology with its merits in sea-ice disaster monitoring is widely used to deal with issues of sea-ice disaster. In this paper, a method based on grading of sea-ice disaster risk is put forward to examine the sea-ice disaster risk in Bohai Sea. In this example, the grid of 0. 2° longitude-latitude interval is used on the base of remote sensing and GIS from which the concentration of sea-ice can be obtained. The biggest ice concentration, average ice concentration, ice thickness and ice age are used as indexes of grading. Sea-ice disaster risk is classified into thee grades： zero risk, low risk and high risk according to the spot observation and empirical study for years. The results indicate that these indexes can reflect the degrees of sea-ice disaster risk and this method may provide strong supports for sea forecast.
出处
《灾害学》
CSCD
2008年第2期10-14,18,共6页
Journal of Catastrophology
基金
国家自然科学基金重点资助项目(40335048)
国家"十一五"科技支撑计划重大项目课题(2006BAB03A03)
国家"十一五"高新技术发展计划(863)重点项目课题(2006AA100206)
关键词
密集度
冰厚
海冰灾害
网格
遥感
渤海
concentration
ice thickness
sea-ice disaster
grid
remote sensing
Bohai Sea
