学术论文

      环境地球科学之滑坡地震地质学

      LANDSLIDE SEISMOLOGY GEOLOGY:A SUB-DISCIPLINE OF ENVIRON-MENTAL EARTH SCIENCES

      摘要:
      本文提出滑坡地震地质学学科概念,属于环境地球科学学科范畴.滑坡地震地质学是研究地震荷载下滑坡发生机理、分布与演化规律的学科;也是借助地震滑坡解决地震地质问题的学科.它是地质灾害学、地震地质学、工程地质学之间的一门交叉边缘学科.其也与固体地球物理学、构造地质学、构造地貌学、环境地质学、数值计算、地理信息系统、遥感、统计分析等学科密切相关.文章从科研层面与应用层面的分类大体构建了滑坡地震地质学的研究框架与体系.科研层面的目的是探索地震滑坡规律,应用层面的目的是地震滑坡防灾减灾.根据科研与应用层面的研究目的,将其研究内容大体分为两部分:(1)研究地震滑坡发生机制、分布样式、演化规律等;(2)建立地震滑坡与地震、发震构造、地震破裂过程等的关系式,进而利用地震滑坡解决地震地质问题,如地震问题(地震参数、地震动强度、地震烈度)、发震构造问题(性质、破裂过程)、地质问题(震区地貌演化)等.最后,从地震滑坡数据库,全球范围多震例的地震滑坡分析,地震滑坡与地震地质对象关联的机理研究,地震滑坡演化规律等方面对该学科进行了展望.总之,考虑到随着遥感与GIS等技术的发展成熟、地震滑坡防灾减灾的越来越迫切的需求、多学科的融合交叉的发展趋势等方面,滑坡地震地质学势必会受到越来越广泛的关注.
      Abstract:
      This paper raises the concept of Landslide Seismology Geology,which belongs to the field of Environmental Earth Sciences.This sub-discipline is concerned with the mechanism,distribution and evolution of landslides triggered by earthquakes;and also is a subject that addresses issues in earthquake geology using information from earthquake-triggered landslides.It can also be regarded as a cross-discipline among Disaster Geology,Earthquake Geology and Engineering Geology(or Geotechnical Geology).It is related to many disciplines or technologies,such as Solid Geophysics,Tectonics,Tectonic Geomorphology,Environmental Geology, Numerical Computation,Geographic Information System(GIS),Remote Sensing,and Statistical Analysis.This paper outlines the research framework and system of the Landslide Seismology Geology from scientific research and practical application.The purpose of its scientific research is to explore the laws of earthquake-triggered landslides, while the practical application is aimed to serve landslide hazard prevention and mitigation.According to these goals,the research contents are generally divided into two aspects:(1)Studying mechanisms,distribution patterns and evolution laws of earthquake-triggered landslides;(2)Establishing relationships of earthquake-triggered landslides with earthquakes,seismogenic faults and earthquake ruptures.Then employing these relationships to solve problems of earthquake geology,such as seismology(seismic parameters,ground shaking,and seismic intensity),seismogenic faults(geometry,kinematics,and rupture processes),and geology(geomorphologic evolution).Finally,this paper overviews some aspects of this sub-discipline,including database of earthquake-triggered landslides,case analysis of earthquake-triggered landslides based on events around the world,the relationship between earthquake-triggered landslides and earthquake geology objects,and evolution law of earthquake-triggered landslides.In short,taking into account the development of the remote sensing and GIS technologies,increasingly urgent needs of earthquake-triggered landslide disaster prevention and mitigation,and the tendency of multi-disciplinary integration,the geology of earthquake landslides will receive increasing attentions in the community of geosciences.
      作者: 许冲
      Author: XU Chong
      作者单位: 中国地震局地质研究所,活动构造与火山重点实验室 北京,100029
      刊 名: 工程地质学报 ISTICPKU
      年,卷(期): 2018, 26(1)
      分类号: P642.22
      在线出版日期: 2018年5月11日
      基金项目: "十三五"国家重点研发计划项目,国家自然科学基金国际合作项目