Analysis of Costantino Landslide Dam Evolution Southern Italy by Means of Satellite Images, Aerial Photos, and Climate DataReportar como inadecuado


Analysis of Costantino Landslide Dam Evolution Southern Italy by Means of Satellite Images, Aerial Photos, and Climate Data


Analysis of Costantino Landslide Dam Evolution Southern Italy by Means of Satellite Images, Aerial Photos, and Climate Data - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Department of Physics and Geology, University of Perugia, Via Pascoli snc, 06123 Perugia, Italy





*

Author to whom correspondence should be addressed.



Academic Editors: Francesca Cigna and Jesús Martínez Frías

Abstract Large landslides, triggered by earthquakes or heavy rainfall, often obstruct the river’s flow to form landslide dams, causing upstream inundations, and downstream flooding. In Italy, landslide dams are rather widespread along in Alps and Apennines: although the identification of past events is a complex task, some hundreds of landslide dams are identified in the literature. In order to assess the formation and evolution of landslide dams, several studies suggested the employment of geomorphological indexes. In this framework, the knowledge of site-specific time-space evolution can be useful in the understanding of the landslide dams phenomena. The present work focuses on a landslide dam that occurred in January 1973, which totally dammed the Bonamico River Valley Southern Italy: the lake reached an area of about 175,000 m2, a volume of about 3.6 × 106 m3 and a maximum depth of 40 m. During 1973–2008, the lake surface gradually decreased and nowadays it is completely extinct by filling. By using satellite and aerial images, the paper discusses the evolution of the lake surface and the causes of the lake extinction. The use of a climate index i.e., standardized precipitation index at different time scale indicates that in recent decades the alternance of drought and heavy rainfall periods affected the inflow-outflow dynamics, the filling of lake due to the solid transport of the Bonamico River, and the failure of the landslide dam. View Full-Text

Keywords: Costantino Lake; landslide dam; remote sensing Costantino Lake; landslide dam; remote sensing





Autor: Corrado Cencetti * , Lucio Di Matteo and Saverio Romeo

Fuente: http://mdpi.com/



DESCARGAR PDF




Documentos relacionados