Parâmetros morfométricos e corridas de detritos: índice de suscetibilidade e magnitude para bacias hidrográficas na Serra do Mar

Abstract

da FFLCH, pelo auxílio para apresentação dos resultados parciais desta pesquisa em eventos científicos e suporte técnico.To Alexandra Elbakyan, for providing free access to scientific journals, making communication more open and efficient, specially for students from developing countries like me.Aos professores Claudinei Taborda da Silveira e Maria Carolina Villaça Gomes, pelos ensinamentos e ajuda em campo, e ao Professor Tiago Damas Martins, pelo aprendizado e suporte.Ao amigo e parceiro no estudo das corridas de detritos Marcelo Fischer Gramani, pelos ensinamentos, amizade, contribuição e por ser uma referência ética e honesta. I also would like to acknowledge Professor Scott McDougall, for accepted me as a visiting student in his research group, and all the colleagues of the Geohazards Research Team, highlighting Andrew Mitchel and Sophia Zubrycky, for kindly taken me to their study sites and helping me to improved my research. I must say that this thesis would never been made without your support. The monthly and weekly meetings of the Geohazards Team helped me a lot to develop this research, to see what was missing, and what I needed to improve to minimally correctly study debris flows with the limited data that I had. From the bottom of my heart, thank you for all. I know that this research is not much compared to what you do and are used to do, but know that for my reality of developing country, this research is very important, and I hope will help in the advance of the studies about debris flow in Brazil.À minha família, que sempre esteve ao meu lado, me apoiando e me incentivando. Meus pais, Valter e Cristina, por me colocarem na escolinha quando eu pedi (tinha o que, 3 anos na época?) e sempre valorizarem meus estudos. Minha irmã Helen, pela amizade e amor incondicional, sempre me dando força e me fazendo sorrir nos momentos mais difíceis, mas também por puxar minha orelha quando necessário. Meu marido Fernando, pelo seu amor, carinho e paciência, especialmente nos momentos difíceis, e por sempre acreditar em mim quando eu mesma não acreditava mais. E meus filhos, Kylo e Valente, por seu amor puro, companheirismo e carinho.Às amigas e companheiras científicas Rebeca, Ritinha e Camila, por tornarem a pós-graduação mais leve e descontraída para mim, sempre dispostas a me apoiar e me animar nos momentos de dificuldades.Às amigas, Jessica e Thais, pela amizade e por sempre torcerem por mim ao longo desses mais de 10 anos de companheirismo e amizade que nasceu durante a graduação.Palavras-chave: processos hidrogeomorfológicos, fluxos de detritos, morfometria, mapeamento em campo, feições deposicionais.

Integrated assessment of susceptibility to shallow landslides and debris flows in watersheds of the Serra do Mar escarpment, southeastern Brazil.

“…Ferreira et al [2018] utilized morphometric parameters to evaluate debris flow susceptibility and hazard in 106 watersheds in Itaóca municipality, São Paulo state. Meanwhile, Dias and Vieira [2022] investigated the correlation between watershed morphometric characteristics and debris flows occurrence in Serra do Mar region.…”

“…The Serra do Mar is a system of escarpments and mountains that extends over 1500km along the coastline, spanning the states of Santa Catarina, Paraná, São Paulo, and Rio de Janeiro [Dias and Vieira, 2022] , 1964;de Almeida and Carneiro, 1998]. As noted by Bitar [2014], the geology of the area is primarily composed of two types of lithology: metamorphic rocks (migmatites, gneisses, and amphibolites) and igneous rocks (granites, granodiorites, and syenites).…”

Differences in the occurrence of debris flows in tropical and temperate environments: field observations and geomorphologic characteristics in Serra do Mar (Brazil) and British Columbia (Canada)

“…The debris flow in GW was mainly confined to the main V-shaped channel on higher slopes, losing confinement on the lower slopes and in the opening of the valley in the lowland, where spreading and deposition occurred; this spreading and deposition formed levees that are approximately 1.5 m thick with local inverse grading and local lack of sorting (Figs. 7C and 7D) (Gramani 2015, Dias 2021Dias et al 2022).…”

“…Levees reaching 2 m thick were formed beside the channel in depositional areas with the presence of local inverse grading and local lack of sorting (Figs. 8C and 8D) (Dias 2021, Dias et al 2022.…”