Comparison of three landslide event inventories in central and northern Italy using frequency-area statistics
Comparison of three landslide event inventories in central and northern Italy using frequency-area statistics
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使用频率区域统计比较意大利中部和北部的三个滑坡事件清单
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
D. Turcotte
中科院分区：
文献类型：
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作者：
A. Jansà;R. Romero;F. Guzzetti;P. Aleotti;B. Malamud;D. Turcotte
有证据表明，由极端自然事件引发的滑坡的统计数据显示出一种“普遍”行为，即滑坡面积越大，滑坡发生的频率就越大，然后按幂规律减少。这使我们能够对从滑坡清单地图中获得的触发滑坡事件的人口进行定量比较。我们首先讨论滑坡清单地图的特点和局限性，然后介绍意大利中部和北部最近的三个滑坡事件清单。对于每个清单，我们计算滑坡区域的概率密度和频率密度，将这些结果相互比较，并与“普遍的”滑坡分布进行比较，最终估计每个清单的滑坡事件强度。
Evidence exists that the statistics of landslides triggered by extreme natural events exhibit a “universal” behaviour, where for increasing landslide area, the frequency of landslides increases to a maximum value and then decreases following a power law. This allows us to make quantitative comparisons of populations of triggered landslide events obtained from landslide inventory maps. We first discuss the characteristics and limitations of landslide inventory maps, followed by a presentation of three recent landslide event inventories in central and northern Italy. For each inventory, we calculate the probability and frequency densities of landslide areas, compare these results to each other and with the “universal” landslide distribution, and finally estimate each inventory’s landslide event magnitude.