@article{gledocs_11858_11147,
author = {Cabral, Victor Carvalho and Reis, Fábio Augusto Gomes Vieira and D’Affonseca, Fernando Mazo and Lucía, Ana and dos Santos Corrêa, Claudia Vanessa and Veloso, Vinicius and Gramani, Marcelo Fischer and Ogura, Agostinho Tadashi and Lazaretti, Andrea Fregolente and Vemado, Felipe and Pereira Filho, Augusto José and dos Santos, Claudia Cristina and Lopes, Eymar Silva Sampaio and Rabaco, Lis Maria Reoni and do Carmo Giordano, Lucilia and Zarfl, Christiane},
title = {Characterization of a landslide-triggered debris flow at a rainforest-covered mountain region in Brazil},
year = {2021-05-30},
volume = {108},
number = {3},
pages = {3021-3043},
publisher = {Springer Netherlands},
publisher = {},
abstract = {Debris flows represent great hazard to humans due to their high destructive power. Understanding their hydrogeomorphic dynamics is fundamental in hazard assessment studies, especially in subtropical and tropical regions where debris flows have scarcely been studied when compared to other mass-wasting processes. Thus, this study aims at systematically analyzing the meteorological and geomorphological factors that characterize a landslide-triggered debris flow at the Pedra Branca catchment (Serra do Mar, Brazil), to quantify the debris flow’s magnitude, peak discharge and velocity. A magnitude comparison with empirical equations (Italian Alps, Taiwan, Serra do Mar) is also conducted. The meteorological analysis is based on satellite data and rain gauge measurements, while the geomorphological characterization is based on terrestrial and aerial investigations, with high spatial resolution. The results indicate that it was a large-sized stony debris flow, with a total magnitude of 120,195 m3, a peak discharge of 2146.7 m3 s−1 and a peak velocity of 26.5 m s−1. The debris flow was triggered by a 188-mm rainfall in 3 h (maximum intensity of 128 mm h−1), with an estimated return period of 15 to 20 years, which, combined with the intense accumulation of on-channel debris (ca. 37,000 m3), indicates that new high-magnitude debris flows in the catchment and the region are likely to occur within the next two decades. The knowledge of the potential frequency and magnitude (F–M) can support the creation of F–M relationships for Serra do Mar, a prerequisite for reliable hazard management and monitoring programs.},
note = { \url {http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/11147}},
}