地震地质 ›› 2014, Vol. 36 ›› Issue (1): 90-104.DOI: 10.3969/j.issn.0253-4967.2014.02.008

• 研究论文 • 上一篇    下一篇

21世纪初几次大地震事件触发滑坡基础数据建设

许冲, 徐锡伟   

  1. 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
  • 收稿日期:2013-01-29 修回日期:2013-07-03 出版日期:2014-03-30 发布日期:2014-04-08
  • 基金资助:
    国家自然科学基金(41202235)和中国地震局地质研究所基本科研业务专项(IGCEA1215,IGCEA1302)共同资助

CONSTRUCTION OF BASIC EARTHQUAKE-TRIGGERED LANDSLIDES DATASET FOR SEVERAL LARGE EARTHQUAKE EVENTS AT THE BEGINNING OF THE TWENTY-FIRST CENTURY

XU Chong, XU Xi-wei   

  1. Key Laboratory of Active Tectonics and Volcano, Institute of Geology, China Earthquake Administration, Beijing 100029, China
  • Received:2013-01-29 Revised:2013-07-03 Online:2014-03-30 Published:2014-04-08

摘要: 自2008年5月12日汶川MW7.9地震发生以来,针对地震滑坡与光学遥感影像的特点,制定了地震滑坡编录新原则、遥感影像选取新原则及地震滑坡属性库建立原则。文中介绍了21世纪初4次大地震事件触发滑坡基础数据建设成果:包括2008年5月12日汶川MW7.9地震,此次地震触发了至少197 481处滑坡;2010年4月14日玉树MW6.9地震至少触发2 036处滑坡;2010年1月12日海地MW7.0地震至少触发30 828处滑坡;2007年4月21日智利艾森峡湾MW6.2地震至少触发1 000处滑坡。分析了地震触发滑坡基础数据建设成果与以往研究的不同。最后从地震滑坡基础数据建设成果对地震滑坡分布规律与危险性评价的影响,对震区滑坡与泥石流防灾减灾的意义,对地震震级、活动断层运动习性、地震烈度等的反馈,对震区河流与地貌演化研究的基础意义,对全球地震震级与触发滑坡关系研究的意义等几个方面,分析了地震滑坡基础数据建设的实际应用价值与科学研究意义。

关键词: 地震, 滑坡, 基础数据建设, 21世纪初

Abstract: Since the May 12, 2008 Wenchuan MW7.9 earthquake occurred, the authors have developed new standards for building earthquake-triggered landslide inventory, selecting remote sensing images, and building attribute database based on characteristics of earthquake-triggered landslides and optical remote sensing images. The construction of the basic earthquake-triggered landslides database related to the four earthquake events occurring at the beginning of the twenty-first century is introduced, including, the May 12, 2008 Wenchuan MW 7.9 earthquake, China, which triggered at least 197,481 landslides, the April 14, 2010 Yushu earthquake, China, that triggered at least 2036 landslides, the January 12, 2010 Haiti MW 7.0 earthquake, which triggered at least 30,828 landslides, and the Aysén Fjord MW 6.2 earthquake, Chilean, which triggered at least 1000 landslides. Differences between the database constructed by us and previous results are analyzed. In conclusion, practicable value and scientific significance of these basic earthquake-triggered landslides databases are analyzed, such as, the importance on spatial distribution and hazard analysis of earthquake-triggered landslides, prevention and mitigation for landslide and debris flow disaster in earthquake struck areas, the significance in analyzing magnitudes of earthquake, movement behavior of active fault, seismic intensity information, and essential data for river and landscape evaluation in earthquake stuck areas, and the use in constructing correlation of global earthquakes and landslides triggered by the earthquakes.

Key words: earthquake, landslides, construction of basic data, the beginning of the twenty-first century

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