摘要
利用2005—2015年辽宁省地质灾害调查的历史资料,分析了辽宁省泥石流、滑坡、崩塌、地面塌陷等不同类型地质灾害和特大型、大型、中型、小型等不同等级地质灾害的组成及时空分布特征,总结了辽宁省地质灾害的类型和强度特征、易发区和高发期。结果表明:辽宁省地质灾害具有种类多、分布广、频次高和强度大的特征,地质灾害类型以滑坡和泥石流灾害为主,灾害等级以小型为主。2005—2015年辽宁省每年均有地质灾害出现,但每年地质灾害发生次数存在较大差异。5—8月为辽宁省地质灾害的高发期,其中8月地质灾害发生次数最多且影响最重。辽宁省地质灾害多发于山脊两侧与平原或丘陵交界的沟壑处,丹东地区地质灾害出现次数最多。滑坡和泥石流灾害主要出现在乡村,崩塌和地面塌陷灾害主要出现在城区,本文研究结果有利于进一步了解辽宁省地质灾害特征和为地质灾害气象风险预警业务提供参考。
Based on the historical data of geological disaster investigation from2005to2015in Liaoning province,the composition and spatiotemporal characteristics of different categories of geological disasters such as debris flow,landslide,rockfall,ground subsidence,and the different levels(extra large,large,medium,and small)of geological disasters in Liaoning province were analyzed.The categories,intensity,hazard prone areas and high incidence periods of geological disaster in Liaoning province were finally summarized.The results show that the geological hazard in Liaoning province is characterized by great variety,wide distribution,high frequency and large intensity.The types of geological hazards are mainly involved landslide and debris flow,and the level of geological hazards is usually small.Although geological disasters occur every year from2005to2015,their annual occurrence numbers vary greatly.The period of high incidence concentrates from May to August,with the largest occurrence frequency and worst influence in August.Geological disasters occur mostly at the ravines on either side of the ridge and plains or hills in Liaoning province and occur most frequently in Dandong.Landslides and debris flow mainly occur in countries while rockfall and ground subsidence usually occur in urban areas.This work would be beneficial to understand the characteristics of geological disasters in Liaoning province and provide a reference for the meteorological risk early warning of geological hazards.
作者
陈传雷
管兆勇
程攀
肖光梁
孙虹雨
寇英杰
CHEN Chuan-lei;GUAN Zhao-yong;CHENG Pan;XIAO Guang-liang;SUN Hong-yu;KOU Ying-jie(Key Laboratory of Meteorological Disaster of Ministry of Education,Nanjing University of Information Science & Technology,Nanjing 210044,China;Liaoning Meteorological Disaster Monitoring and Early Warning Centre,Shenyang 110166,China;Shenyang Central Meteorological Observatory,Shenyang 110166,China;Liaoning Geological Environmental Monitoring Centre,Shenyang 110032,China)
出处
《气象与环境学报》
2017年第5期68-75,共8页
Journal of Meteorology and Environment
基金
中国气象局预报员专项(CMAYBY2015-015)
中国气象局预报预测核心业务发展专项(CMAHX20160103)
辽宁省气象局科研项目(201607)共同资助
关键词
地质灾害
灾害类型
灾害等级
易发区
高发期
Geological hazard
Disaster type
Disaster level
Prone area
High incidence period
