基于地形动力学的华南海滩裂流风险研究  

Study on the rip current hazard of South China beaches based on beach morphodynamics

作　　者：李志强[1] 

机构地区：[1]广东海洋大学工程学院,广东湛江524088

出　　处：《热带海洋学报》2015年第1期8-14,共7页Journal of Tropical Oceanography

基　　金：国家自然科学基金项目(40806036);广东省教育厅育苗工程项目;广东海洋大学自然科学基金青年团队项目(c1212157)

摘　　要：海滩是人们海滨旅游首选目的地,具有重要的旅游经济价值。裂流是海滨旅游的潜在威胁,已经造成了重大的生命和财产损失。本文基于?-RTR海滩状态模型(?为无维沉降速率参数,RTR为相对潮差)提出了海滩裂流风险评价方法,在收集华南沿海51个海滩波浪要素、潮差、泥沙粒径等地形动力要素的基础上,对海滩裂流风险进行了初步评估。结果表明福建南部岸段、粤东的汕尾岸段、粤西的阳江、茂名岸段、海南的东部岸段和南部岸段裂流风险最大。通过与遥感图像和有关的报道比较,探讨了评估结果的合理性。本文结果可为海滩浴场的选址和管理提供参考,但对具体海滩裂流风险评估还需做更多现场观测。Beach is often the first coastal tourism destination of people, which has important tourism economic value. Ripcurrents are potential hazard to the visitors who go to the beach, and have caused significant loss of life and property. A ripcurrent hazard assessment method is proposed here based on the beach state model of Masselink and Short （Ω-RTR model, Ωis dimensionless fall velocity, RTR is spring tide range）. After collecting morphodynamic parameters （wave parameters, tidalrange and sediment grain size） of 51 South China beaches, a preliminary assessment of the rip current hazard was carried outusing the Ω-RTR method. Results show that the coast sections of southern Fujian, Shanwei of eastern Guangdong, Yangjiang andMaoming of western Guangdong, eastern and southern Hainan have the highest rip current risk. The evaluation results werecompared with remote sensing images and related media reports. Although the results are helpful to select and manage recreationalbeach locations, more field observations must be taken for a more specific assessment of beach rip current risk hazard.

关 键 词：裂流 地形动力学 海滩风险 溺水事故 

分 类 号：P731.21[天文地球—海洋科学] X820.4[环境科学与工程—环境工程]