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Pre and post 2015 Nepal earthquake landslide inventories

机译:2015年尼泊尔地震前后的滑坡清单

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A magnitude 7.8 earthquake struck Nepal on April 25, 2015. An earthquake-induced landslide inventory is under development by using multi-temporal images and mapping as polygons. The most abundant landslide types are: debris flows, shallow translational slides, and rockfalls. We compared the size frequency distribution of the inventory with those of other eight earthquake-induced landslide inventories, to study the relationship between the earthquake magnitude and the landslide size. We found that the proportion between small and large landslides is similar to the other earthquakes. Then, we studied how the landslide frequency density changes as a function of topographic parameters and the lithologies of the affected area. We observed that the mean slope gradient for earthquake-induced landslides is higher than expected and change with the slope aspect.
机译:2015年4月25日,尼泊尔发生了7.8级地震。通过使用多时相图像和多边形映射,正在开发由地震引起的滑坡清单。最丰富的滑坡类型是:泥石流,浅平移滑坡和落石。我们将清单的大小频率分布与其他八种地震诱发的滑坡清单的频率分布进行了比较,以研究地震震级与滑坡大小之间的关系。我们发现,小型和大型滑坡之间的比例与其他地震相似。然后,我们研究了滑坡频率密度如何随地形参数和受影响区域的岩性而变化。我们观察到,地震诱发的滑坡的平均坡度比预期的要高,并且随坡度的变化而变化。

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