福建北部四岛主要灾害地质特征分析

Analysis of the Main Characteristics of Geological Hazards in Four Islands of Northern Fujian Province

通过野外实地考察和资料收集,统计分析了福建北部四岛(大嵛山、浮鹰岛、三都岛和林进屿)发育的各种灾害地质特征。福建北部四岛存在的主要灾害地质类型有:崩滑塌、海岸侵蚀、雨水冲蚀和滨海湿地退化。控制该区各类灾害地质发生的因素为坡地重力因素、水动力因素和海气相互作用。在此基础上编制了福建北部四岛灾害地质分布图,分析了灾害地质的空间特征,为防灾减灾提供决策依据。

By field reconnaissance and data collection,all kinds of geological hazards possibly existing in the four islands(Dayushan Island,Fuying Island,Sandu Island and Linjin Island) of northern Fujian Province are statistically analyzed,and the main types of the geological hazards are collapse slumping,coastal erosion,rain flushing and coastal wetland degradation.The factors controlling the geological hazards in the area studied are slope gravity,hydrodynamic force and air-sea interaction.The distribution map of the geological hazards has been plotted for the four islands and the spatial features have been studied.The results will provide a decision-making basis for the prevention and mitigation of the hazards.