Landslide Hazard and Risk in a Changing Climate

Winter, M G; Shearer, Barbara

doi:10.1007/978-3-319-04999-1_38

Cited by 4 publications

(1 citation statement)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These phenomena occur when a mixture of earth material, water and air very rapidly surges down steep drainage paths (Varnes 1978;Takahashi 2006;Hungr et al 2014) and their primary triggering factor is high-intensity rainfall (Milne et al 2008). The increasing frequency of extreme rainfall events on a global scale (Beniston 2009;Giorgi et al 2011;Borga et al 2014;Westra et al 2014) has been associated with an observed increase in the frequency and magnitude of debris-flow events (Stoffel and Huggel 2012;Winter and Shearer 2014;Borga et al 2014), which, combined with landslides, were responsible for more than 32,000 casualties between 2004 and 2010 (Petley 2012;Borga et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Characterization of a landslide-triggered debris flow at a rainforest-covered mountain region in Brazil

et al. 2021

View full text Add to dashboard Cite

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.

show abstract

Section: Introductionmentioning

confidence: 99%

Characterization of a landslide-triggered debris flow at a rainforest-covered mountain region in Brazil

et al. 2021

View full text Add to dashboard Cite

show abstract

Hazard assessment of debris-flow-prone watersheds in Cubatão, São Paulo State, Brazil

et al. 2023

View full text Add to dashboard Cite

In Brazil, research related to the occurrence and prevention of debris flows is incipient when compared to the extent of the impacts caused by the phenomena. There is a need for more studies that consider their susceptibility and hazard, especially in areas that are environmentally and socioeconomically vulnerable. This study aims at assessing debris-flow hazard in the Rio das Pedras watershed, in Cubatão (São Paulo State, Brazil), based on a set of different physiographic parameters (geomorphological, morphometric, geological) and the application of empirical models. The hazard assessment was based on: (i) the evaluation of the history of events in the region; (ii) the identification of the geomorphic controlling factors; (iii) the estimation of the magnitude of a potential event and, (iv) the identification of the elements at hazard. The results show that a debris-flow event in Rio das Pedras would more severely impact the Anchieta Highway (SP-150), the gas pipeline GASAN, the oil pipeline OSSP, and the districts Pinhal do Miranda and Cota 95. The results showed the relevance of geomorphological and geological parameters in estimating the magnitude of debris runoff for defining the danger in watersheds susceptible to the occurrence of debris flows.

show abstract

Assessing the impact of RCP4.5 and RCP8.5 scenarios on landslide susceptibility mapping using support vector machine: A case study of Penang Island, Malaysia

Mohamed Yusof,

A Rashid,

Abdul Khanan

et al. 2024

Physics and Chemistry of the Earth, Parts A/B/C

View full text Add to dashboard Cite

Landslide Hazard and Risk in a Changing Climate

Cited by 4 publications

References 7 publications

Characterization of a landslide-triggered debris flow at a rainforest-covered mountain region in Brazil

Characterization of a landslide-triggered debris flow at a rainforest-covered mountain region in Brazil

Hazard assessment of debris-flow-prone watersheds in Cubatão, São Paulo State, Brazil

Assessing the impact of RCP4.5 and RCP8.5 scenarios on landslide susceptibility mapping using support vector machine: A case study of Penang Island, Malaysia

Contact Info

Product

Resources

About