Landslide susceptibility assessment at the basin scale for rainfall- and earthquake- triggered shallow slides

Detalhes bibliográficos
Autor(a) principal: Gordo, Cristina
Data de Publicação: 2019
Outros Autores: Zêzere, José, Marques, Rui
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10451/41275
Resumo: The hydrographic basin of Ribeira Grande (S. Miguel Island, Azores) has a set of characteristics that enhance the occurrence of shallow slides that have been triggered by rainfall and earthquakes. Two landslide inventories were built according to the landslide triggers: Landslide Inventory 2 (LI 2), which includes 174 earthquake-triggered shallow slides occurred in 2005; and Landslide Inventory 1 (LI 1), which includes 442 shallow slides triggered by rainfall in several periods from 2005 to 2016. Both landslide inventories were characterized and compared from the morphometric point of view and were used individually to produce susceptibility models to failure using a simple bivariate state-of-the-art statistical method (the Information Value). The landslide susceptibility Models were validated using success rates, prediction rates, and Kappa statistics. The results show that shallow slides triggered by rainfall and earthquakes in the study area have di erent morphometric characteristics. It was verified that models produced with LI 1 are very e ective in predicting the spatial location of LI 2, but the same does not happen in the inverse situation. Finally, landslide susceptibility models developed with LI 1 and LI 2 for the upper sector of the hydrographic basin (where most landslides occurred), and latter applied to the complete watershed, present more modest predictive results but are more reliable to characterize the landslide susceptibility in the study area.
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spelling Landslide susceptibility assessment at the basin scale for rainfall- and earthquake- triggered shallow slidesShallow slidesRainfall-triggeringEarthquake-triggeringModellingSusceptibilityThe hydrographic basin of Ribeira Grande (S. Miguel Island, Azores) has a set of characteristics that enhance the occurrence of shallow slides that have been triggered by rainfall and earthquakes. Two landslide inventories were built according to the landslide triggers: Landslide Inventory 2 (LI 2), which includes 174 earthquake-triggered shallow slides occurred in 2005; and Landslide Inventory 1 (LI 1), which includes 442 shallow slides triggered by rainfall in several periods from 2005 to 2016. Both landslide inventories were characterized and compared from the morphometric point of view and were used individually to produce susceptibility models to failure using a simple bivariate state-of-the-art statistical method (the Information Value). The landslide susceptibility Models were validated using success rates, prediction rates, and Kappa statistics. The results show that shallow slides triggered by rainfall and earthquakes in the study area have di erent morphometric characteristics. It was verified that models produced with LI 1 are very e ective in predicting the spatial location of LI 2, but the same does not happen in the inverse situation. Finally, landslide susceptibility models developed with LI 1 and LI 2 for the upper sector of the hydrographic basin (where most landslides occurred), and latter applied to the complete watershed, present more modest predictive results but are more reliable to characterize the landslide susceptibility in the study area.MDPIRepositório da Universidade de LisboaGordo, CristinaZêzere, JoséMarques, Rui2020-01-20T12:27:40Z20192019-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10451/41275engGordo, C., Zêzere, J.L., Marques, R. (2019). Landslide susceptibility assessment at the basin scale for rainfall- and earthquake- triggered shallow slides. Geosciences, 9(6), 268; https://doi.org/10.3390/geosciences90602682076-326310.3390/geosciences9060268info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-11-20T17:55:27Zoai:repositorio.ul.pt:10451/41275Portal AgregadorONGhttps://www.rcaap.pt/oai/openairemluisa.alvim@gmail.comopendoar:71602024-11-20T17:55:27Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Landslide susceptibility assessment at the basin scale for rainfall- and earthquake- triggered shallow slides
title Landslide susceptibility assessment at the basin scale for rainfall- and earthquake- triggered shallow slides
spellingShingle Landslide susceptibility assessment at the basin scale for rainfall- and earthquake- triggered shallow slides
Gordo, Cristina
Shallow slides
Rainfall-triggering
Earthquake-triggering
Modelling
Susceptibility
title_short Landslide susceptibility assessment at the basin scale for rainfall- and earthquake- triggered shallow slides
title_full Landslide susceptibility assessment at the basin scale for rainfall- and earthquake- triggered shallow slides
title_fullStr Landslide susceptibility assessment at the basin scale for rainfall- and earthquake- triggered shallow slides
title_full_unstemmed Landslide susceptibility assessment at the basin scale for rainfall- and earthquake- triggered shallow slides
title_sort Landslide susceptibility assessment at the basin scale for rainfall- and earthquake- triggered shallow slides
author Gordo, Cristina
author_facet Gordo, Cristina
Zêzere, José
Marques, Rui
author_role author
author2 Zêzere, José
Marques, Rui
author2_role author
author
dc.contributor.none.fl_str_mv Repositório da Universidade de Lisboa
dc.contributor.author.fl_str_mv Gordo, Cristina
Zêzere, José
Marques, Rui
dc.subject.por.fl_str_mv Shallow slides
Rainfall-triggering
Earthquake-triggering
Modelling
Susceptibility
topic Shallow slides
Rainfall-triggering
Earthquake-triggering
Modelling
Susceptibility
description The hydrographic basin of Ribeira Grande (S. Miguel Island, Azores) has a set of characteristics that enhance the occurrence of shallow slides that have been triggered by rainfall and earthquakes. Two landslide inventories were built according to the landslide triggers: Landslide Inventory 2 (LI 2), which includes 174 earthquake-triggered shallow slides occurred in 2005; and Landslide Inventory 1 (LI 1), which includes 442 shallow slides triggered by rainfall in several periods from 2005 to 2016. Both landslide inventories were characterized and compared from the morphometric point of view and were used individually to produce susceptibility models to failure using a simple bivariate state-of-the-art statistical method (the Information Value). The landslide susceptibility Models were validated using success rates, prediction rates, and Kappa statistics. The results show that shallow slides triggered by rainfall and earthquakes in the study area have di erent morphometric characteristics. It was verified that models produced with LI 1 are very e ective in predicting the spatial location of LI 2, but the same does not happen in the inverse situation. Finally, landslide susceptibility models developed with LI 1 and LI 2 for the upper sector of the hydrographic basin (where most landslides occurred), and latter applied to the complete watershed, present more modest predictive results but are more reliable to characterize the landslide susceptibility in the study area.
publishDate 2019
dc.date.none.fl_str_mv 2019
2019-01-01T00:00:00Z
2020-01-20T12:27:40Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10451/41275
url http://hdl.handle.net/10451/41275
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Gordo, C., Zêzere, J.L., Marques, R. (2019). Landslide susceptibility assessment at the basin scale for rainfall- and earthquake- triggered shallow slides. Geosciences, 9(6), 268; https://doi.org/10.3390/geosciences9060268
2076-3263
10.3390/geosciences9060268
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv mluisa.alvim@gmail.com
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