【摘要】 珠江口海岛及其邻近海域是华南沿海地质灾害类型较齐全的地区之一 ,主要有活动断裂、地震、地裂缝、软土、风沙、滑坡、崩塌、地面沉降和海平面上升等。珠江口海岛主要发育弱活动和微活动断裂 ,活动断裂和断块构造的运动和调整是产生地震活动的主要因素。海平面上升已成为当今世界关注的环境恶化和未来 5 0 a内产生严重威胁的灾害。风沙作用和软土地基主要分布于珠江口海岛海岸带及近岸岛屿。本区的地质灾害以内动力类型为主更多还原

【Abstract】 According to field investigation and collected data,the formation background,distribution characteristics and development regularities of geological hazards in Pearl River Mouth islands and waters are analysed in the paper.In this area,geological hazards are mainly earthquake activities,active faults,surface deformation,landslip and collapse,wind driven sand hazard,river and harbour sedimentation,soft soil ground deformation and soil liquefaction,coast erosion,ground subsidence and so on.The generation of various hazard type characteristics,distribution patterns and processes are expounded in detail in the paper.更多还原