Extreme Flood and Landslides Triggered in the Arroscia Valley (Liguria Region, Northwestern Italy) During the November 2016 Rainfall Event
Extreme Flood and Landslides Triggered in the Arroscia Valley (Liguria Region, Northwestern Italy) During the November 2016 Rainfall Event
复制标题
DOI：
10.1007/978-3-319-93124-1_21
复制
发表时间：
2018-08
期刊：
影响因子：
--
通讯作者：
Giacomo Pepe;Andrea Mandarino;E. Raso;A. Cevasco;M. Firpo;N. Casagli
中科院分区：
文献类型：
--
作者：
Giacomo Pepe;Andrea Mandarino;E. Raso;A. Cevasco;M. Firpo;N. Casagli
2016年11月20日至2016年11月25日，利古里亚地区（意大利西北部）经历了长时间的强降雨。降雨序列发生以下两个主要阶段。第二阶段主要袭击该地区的西部地区，于11月24日达到顶峰。降雨量特别丰富的阿罗夏山谷内，5天的累积降雨量超过50%的平均年降水量。在本文中，我们记录的暴雨量级，提出了第一个清单的阿罗夏谷内的暴雨引起的地面效应。测绘工作是通过广泛的实地工作进行的，部分得到了卫星图像的支持。250多个滑坡影响了山谷的上游，而在下游，大量降水造成的广泛的洪水相关形式和过程被绘制出来。本研究结果可为未来研究滑坡与洪水相关的河道变迁敏感性及风险情景评估提供参考。
From November 20th, 2016, to November 25th, 2016, Liguria Region (northwestern Italy) experienced prolonged and intense rainfall. The rainfall sequence occurred following two main phases. The second phase mainly hit the western sector of the region, reaching its peak on November 24th. Rainfall was particularly abundant within the Arroscia valley, where the 5–days cumulative rainfall locally exceeded 50% of the mean annual precipitation. In this paper, we document the rainstorm magnitude, presenting a first inventory of the rainfall–induced ground effects within the Arroscia Valley. The mapping was performed by means of extensive field work that was partly supported by satellite imageries. More than 250 landslides affected the upper sector of the valley, while in the downstream reach, widespread flood-related forms and processes resulting from the abundant precipitation were mapped. The results of this study are expected to be helpful for future research on both landslide– and flood–related channel change susceptibility and risk scenarios evaluation.