西藏泥石流、滑坡时空分布特征及其与降水条件的分析

Analysis on Temparal and Spatial Distribution Characteristic of Mud-rock Flow and Landslide with the Rainfall Condition

  • 摘要: 通过对1970~2006年西藏泥石流、滑坡的时空分布特征与降水条件分析,得出西藏地区泥石流、滑坡主要发生在藏东地区、喜马拉雅山南侧及沿雅鲁藏布江一线,每年6~8月是泥石流、滑坡多发时段,降水是诱发泥石流、滑坡的主要气象条件,发生泥石流、滑坡可能性与不同雨型、不同等级降水和与前期降水情况密切相关。该研究分析结论,为西藏泥石流、滑坡预警预报提供了参考依据。

     

    Abstract: By analysis about temporal and spatial distribution characteristic of mud-rock flow and the landslide with the rainfall condition in Tibet 1970 ~2006 year, Concluded that the Tibet area mud-rock flow and the landslide mainly occurs in eastern Tibet, the Himalaya Mountains south side and along Yarlung Zangbo River line, the annual June-August were the most period of the mud-rock flow and the landslide occurrence, the rainfall is the main meteorological condition that induces the mud-rock flow and the landslide, it's close correlation that the occurrence possibility of the mud-rock flow and the landslide with the different rain type, the different rank rainfall and the preliminary rainfall situation.This research conclusion provides the reference for Tibet mud-rock flow and the landslide early warning and forecast.

     

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