The Weather Radar Observations Applied to Shallow Landslides Prediction: A Case Study From North-Western Italy

Frontiers in Digital Humanities

Cremonini, Roberto¹  Tiranti, Davide¹ 

[1] Department of Natural and Environmental Risks, Regional Agency for Environmental Protection of Piemonte, Italy

关键词: Slope processes;    Early warning system;    QPE;    remote sensing;    Heavy rainfall;   

DOI  :  10.3389/feart.2018.00134

学科分类：社会科学、人文和艺术（综合）

来源: Frontiers

【 摘 要 】

In northern Italy rainfall-triggered shallow landslides are recurrent hazardous phenomena that cause casualties and extensive damages. In the last decades several early warning systems (EWSs) have been developed based on rainfall intensity–event duration (I-D) thresholds derived by long rain gauges time series. However, rain gauges density and their representativeness limit reliability of such EWSs. In the past decades, several studies explored successfully the usefulness of reliable quantitative precipitation estimates (QPEs) by weather radar. The availability of high spatial and temporal resolution QPEs with short latency of the data makes those observations appealing as input data to automatic EWSs. Nevertheless, weather radar based QPEs can be affected by several sources of errors and uncertainties (miscalibration, partial beam blocking, overhanging precipitation, and so on). Analysing the heavy precipitations that hit Piemonte, north-western Italy, on November 2016, causing floods and triggering widespread shallow landslides, this work presents a fruitful case study of operational weather radar application in shallow landslides early warning system.

【 授权许可】

CC BY