波浪对海上漂浮物漂移轨迹作用分析  

Analysis of Wave Effect on Drifting Trajectory of Float at Sea

作　　者：徐江玲[1,2] 高松 葛勇[1,2] 李锐 吴玲娟 刘桂艳[1,2] 

机构地区：[1]山东省海洋生态环境与防灾减灾重点实验室,山东青岛266061 [2]国家海洋局北海预报中心,山东青岛266061

出　　处：《防灾科技学院学报》2017年第2期75-79,共5页Journal of Institute of Disaster Prevention

基　　金：中国-东盟海上合作基金项目(东南亚海洋环境预报与灾害预警系统建设);国家重点研发计划课题(2016YFC1402103)

摘　　要：基于海上大型浮标(直径10m)脱离锚定(跑位)后的漂移轨迹实测数据,研究波浪对海上漂浮物漂流轨迹的作用。对比只考虑风和流的漂移轨迹和增加波浪作用后的漂移轨迹,发现预报轨迹的距离误差和角度误差均有所减小。另外,波浪引起的漂移速度大小与波陡以及物体浸没比例有关,波陡或浮在海面上的体积增大时,波浪作用引起的漂移速度也随之增加。Based on the real measured data of drift trajectory of buoy with diameter of 10 m out of anchor on the sea, we studied the effect of waves on the drift trajectory of float at sea. After comporing the drift trajectory considering only the wind and ocean current with that considering both the wind and ocean and the wave effect, we found that both the distant error of the direction error between the forecasting and observation trajectories are decreased in the latter. Moreover, the drifting velocity induced by wave is related to wave steepness and float immersion ratio, and it increases with the augmentation of the wave steepness or the target size above the sea surface.

关 键 词：海上搜救 轨迹预报 波浪漂移速度 数值模拟 

分 类 号：U676.8[交通运输工程—船舶及航道工程]