Abstract
Flood and landslides causes serious damage to the functioning of the society which results in a huge loss of human life, material and other environmental impacts. In this paper, partitioning around medoids approach is executed for the assessment of flood quantiles over 145 sites using 11 basin characteristics. The study region is classified into 6 clusters as a result of the partitioning algorithm which are further proved to be homogeneous by applying the heterogeneity measure test. Results from the study provided the regional flood quantile measurements for the ungauged sites derived from L moments with good accuracy limits for the recurrence intervals 50, 100, 200 and 500 years. As a floods landslides may caused by rainfalls, especially over long time periods, which both increase the weight of slopes and can lubricate planes of weakness within rock or sediment. It is shown that landslides are also allocated in some of the clustered zones, depending of geological conditions of the clusters. Thus regional flood quintiles in conjunction with geology and topography forms landslide activity quantiles.
Highlights
The problem of preventing and mitigating the severity of hazardous natural and anthropogenic processes effect is relevant for most of the world's territories, including Russia, India and
This study aims at grouping the sites based on medoids rather than traditional k-means method that uses means as the cluster centroid which suffers from major drawbacks in dealing with noise and outliers
Partitioning Around Medoids (PAM)’s method is a partitioning based clustering that mainly concentrates on the medoids of the data points which are the centroids that are used to form the cluster [26,27,28]
Summary
The problem of preventing and mitigating the severity of hazardous natural and anthropogenic processes effect is relevant for most of the world's territories, including Russia, India and. Specific factors of the evolution of the natural environment can provoke catastrophic natural and natural-anthropogenic processes that were not previously studied at a sufficient level for a reliable prognosis and, often unexpected and destructive: a powerful landslide near the village of Mizur in 2002 and surface failures in the area of village Sadon, as a response to the intensive and irrational mining activity in many respects in the past. On May 17, 2014, from the opposite slope of Kazbek, a large amount of rocks and ice collapsed in the area of the Devdorak glacier in the territory of Georgia. In India, the current monsoon rainy season is one of the most active in the last 100 years
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