福建省热带气旋暴雨型地质灾害特征分析  

Analysis on Characteristics of Geological Hazard Induced by Tropical Cyclone Rainfall in Fujian

作　　者：刘爱鸣[1] 黄志刚[1] 高珊[1] 林小红[1] 

机构地区：[1]福建省气象台,福建福州350001

出　　处：《灾害学》2008年第4期45-48,53,共5页Journal of Catastrophology

基　　金：福建省科技厅重点项目"强降水诱发地质灾害危险度等级预报预警业务服务系统"(2005Y010);中国气象局2007年公益性行业(气象)科研专项"东南地区强降水诱发地质灾害预警报技术研究"资助

摘　　要：福建是受热带气旋影响较严重的省份，又是一个多山的省份，每年都有因热带气旋暴雨诱发滑坡等地质灾害造成巨大人员伤亡和经济损失的事例发生。通过分析福建省1990～2006年热带气旋暴雨诱发的地质灾害个例，发现热带气旋暴雨型地质灾害的规模和强度均比雨季暴雨诱发的地质灾害大；它的发生与热带气旋路径、过程雨量和当日雨量关系密切，地质灾害主要发生在强降水后的48h内；热带气旋登陆前后，若有偏东急流、西南季风、冷空气、暖式切变等系统共同作用，对暴雨具有增幅作用，极易引发地质灾害。Fujian, a mountainous province, is impacted by tropical cyclone seriously. Numerous landslides due to tropical cyclone rainfall result in a great loss of life and property during typhoon season every year. Analysis on the geological disasters caused by tropical cyclone rainfalls in 1990 - 2006 indicate that the scale and intensity of geological hazards induced by tropical cyclone rainfall are greater than that induced by monsoon rainfall. Geological hazards are closely related with tropical cyclone track, total precipitation and daily precipitation. They mainly take place within 2 days after heavy rainfall. Before and after landfall of tropical cyclone, with the joint action of easterly jet, southwest monsoon, chilly air and warm shear, rainfall would be intensified and easily induce geological hazards.

关 键 词：热带气旋 地质灾害 暴雨 福建 

分 类 号：P444[天文地球—大气科学及气象学] P642.2