Evaluation of susceptibility for terrain collapse and subsidence in karst areas, municipality of Iraquara, Chapada Diamantina (BA), Brazil

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dc.creatorLucas de Queiroz Salles
dc.creatorPaulo Henrique Ferreira Galvão
dc.creatorLuiz Rogério Bastos Leal
dc.creatorRicardo Galeno Fraga de Araujo Pereira
dc.creatorCarlos Gleidson Campos da Purificação
dc.creatorFernando Verassani Laureano
dc.date.accessioned2023-04-17T22:29:37Z
dc.date.accessioned2025-09-09T00:27:45Z
dc.date.available2023-04-17T22:29:37Z
dc.date.issued2018
dc.identifier.doihttps://doi.org/10.1007/s12665-018-7769-8
dc.identifier.issn1866-6280
dc.identifier.urihttps://hdl.handle.net/1843/52111
dc.languagepor
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofEnvironmental Earth Sciences
dc.rightsAcesso Aberto
dc.subjectBrasil
dc.subjectRochas carbonáticas
dc.subject.otherKarst
dc.subject.otherCarbonate rocks
dc.subject.otherChapada Diamantina
dc.subject.otherCollapse and subsidence
dc.subject.otherBrazil
dc.titleEvaluation of susceptibility for terrain collapse and subsidence in karst areas, municipality of Iraquara, Chapada Diamantina (BA), Brazil
dc.typeArtigo de periódico
local.citation.epage11
local.citation.issue16
local.citation.spage1
local.citation.volume77
local.description.resumoThe morphological evolution of the karstic systems is associated with a set of physical and chemical processes, triggered by the dissolution of the rocks, related to percolation of groundwater and surface water, which consequently open underground voids and carve out peculiar forms of relief. Due to environmental and geotechnical aspects, this system is naturally more fragile and vulnerable than other natural systems and, therefore, has increasingly received the attention of the scientific community over the past decades. The objective of the study was to delimit zones with varying degrees of susceptibility for collapses and subsidence of sinkholes in the municipality of Iraquara, Chapada Diamantina (BA), Brazil, and to understand their geological and morphological determinant factors. Geological data, karst phenomenon map, and visual analysis in the field were used to categorize zones with different types of susceptibilities to the nucleation of new sinkholes based on a Hazard Index. This index was defined from the sum of geological hazard factors, lineament density, and sinkhole density. The areas that presented the highest susceptibility for terrain collapse and subsidence corresponded to regions where carbon‑ ate rocks outcrop, with high density of photolineaments and 2.62 sinkholes/km2. Processes associated with terrain collapse and subsidence in karst areas consisted of a combination of various factors, hindering precise predictions. However, zones of different types of susceptibilities to terrain collapse and subsidence can be delimited when the relationships between these processes and their factors are understood. The Hazard Index proposed does not provide quantitative values for the probability of hazard susceptibility, but rather indicates areas that are more susceptible to terrain subsidence and collapse.
local.identifier.orcidhttps://orcid.org/0000-0002-7912-3323
local.identifier.orcidhttps://orcid.org/0000-0001-7183-0368
local.identifier.orcidhttps://orcid.org/0000-0003-4015-3370
local.identifier.orcidhttps://orcid.org/0000-0003-3913-3735
local.identifier.orcidhttps://orcid.org/0000-0001-5268-3999
local.identifier.orcidhttps://orcid.org/0000-0003-0674-4070
local.publisher.countryBrasil
local.publisher.departmentIGC - DEPARTAMENTO DE GEOLOGIA
local.publisher.initialsUFMG
local.url.externahttps://link.springer.com/article/10.1007/s12665-018-7769-8

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