Rockfall susceptibility zoning based on back analysis of rockfall deposit inventory in Gunung Kelir, Java
Penulis/Author
Dr. Eng. Guruh Samodra, S.Si., M.Sc. (1); Guangqi Chen (2); Prof. Dr. rer. nat. Junun Sartohadi, M.Sc. (3); Dr. Danang Sri Hadmoko, S.Si., M.Sc (4); Kiyonobu Kasama (5); Dr.rer.nat Muhammad Anggri Setiawan, M.Si (6)
Tanggal/Date
2016
Kata Kunci/Keyword
Abstrak/Abstract
A rockfall susceptibility based on trajectory-energy/velocity approach needs release area or rockfall source. However, identification of rockfall source is not always possible for some areas in Indonesia. This paper presents a rockfall susceptibility
zoning based on back analysis technique of rockfall deposit inventory in Gunung Kelir, Java. There were several steps in the rockfall susceptibility zoning: (1) rockfall deposit inventory, (2) rockfall simulation based on back analysis of rockfall deposit inventory,
(3) sensitivity analysis, and (4) rockfall susceptibility zoning. The result suggests that the travel distance is affected by the spatial distribution of rockfall source, lithology or surface material, and topography (angle of slope and angle of aspect). Final trajectories were employed to generate landslide susceptibility map which may allow a policy maker to have an advanced consideration to achieve specified risk measures and evaluation of their cost efficiency to optimize budget and design. Application of rockfall susceptibility zoning based on back analysis of rockfall deposits is efficient
where rockfall source information is unavailable.
