OCCURRENCE OF LANDSLIDES DURING THE APPROACH OF TROPICAL CYCLONE JULIETTE (2001) TO BAJA CALIFORNIA SUR, MEXICO (edited by G. B. Raga).

The approach of tropical cyclone (TC) Juliette, in 2001, to the Baja California Peninsula triggered at least 419 landslides. Most of the landslides were shallow slips and debris slides of limited areal extent, which were converted rapidly into debris flows to be exported quickly out of the mountain...

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Detalles Bibliográficos
Autores: Antinao, José Luis, Farfán, Luis M.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2012
País:México
Institución:UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO
Repositorio:Atmósfera
Idioma:inglés
OAI Identifier:oai:ojs.pkp.sfu.ca:article/28079
Acceso en línea:https://www.revistascca.unam.mx/atm/index.php/atm/article/view/28079
Access Level:acceso abierto
Palabra clave:Tropical cyclone
eastern Pacific Ocean
Juliette
landslides
sediment transport.
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dc.title.none.fl_str_mv OCCURRENCE OF LANDSLIDES DURING THE APPROACH OF TROPICAL CYCLONE JULIETTE (2001) TO BAJA CALIFORNIA SUR, MEXICO (edited by G. B. Raga).
OCCURRENCE OF LANDSLIDES DURING THE APPROACH OF TROPICAL CYCLONE JULIETTE (2001) TO BAJA CALIFORNIA SUR, MEXICO (edited by G. B. Raga).
title OCCURRENCE OF LANDSLIDES DURING THE APPROACH OF TROPICAL CYCLONE JULIETTE (2001) TO BAJA CALIFORNIA SUR, MEXICO (edited by G. B. Raga).
spellingShingle OCCURRENCE OF LANDSLIDES DURING THE APPROACH OF TROPICAL CYCLONE JULIETTE (2001) TO BAJA CALIFORNIA SUR, MEXICO (edited by G. B. Raga).
Antinao, José Luis
Tropical cyclone
eastern Pacific Ocean
Juliette
landslides
sediment transport.
title_short OCCURRENCE OF LANDSLIDES DURING THE APPROACH OF TROPICAL CYCLONE JULIETTE (2001) TO BAJA CALIFORNIA SUR, MEXICO (edited by G. B. Raga).
title_full OCCURRENCE OF LANDSLIDES DURING THE APPROACH OF TROPICAL CYCLONE JULIETTE (2001) TO BAJA CALIFORNIA SUR, MEXICO (edited by G. B. Raga).
title_fullStr OCCURRENCE OF LANDSLIDES DURING THE APPROACH OF TROPICAL CYCLONE JULIETTE (2001) TO BAJA CALIFORNIA SUR, MEXICO (edited by G. B. Raga).
title_full_unstemmed OCCURRENCE OF LANDSLIDES DURING THE APPROACH OF TROPICAL CYCLONE JULIETTE (2001) TO BAJA CALIFORNIA SUR, MEXICO (edited by G. B. Raga).
title_sort OCCURRENCE OF LANDSLIDES DURING THE APPROACH OF TROPICAL CYCLONE JULIETTE (2001) TO BAJA CALIFORNIA SUR, MEXICO (edited by G. B. Raga).
dc.creator.none.fl_str_mv Antinao, José Luis
Farfán, Luis M.
author Antinao, José Luis
author_facet Antinao, José Luis
Farfán, Luis M.
author_role author
author2 Farfán, Luis M.
author2_role author
dc.subject.none.fl_str_mv Tropical cyclone
eastern Pacific Ocean
Juliette
landslides
sediment transport.
topic Tropical cyclone
eastern Pacific Ocean
Juliette
landslides
sediment transport.
description The approach of tropical cyclone (TC) Juliette, in 2001, to the Baja California Peninsula triggered at least 419 landslides. Most of the landslides were shallow slips and debris slides of limited areal extent, which were converted rapidly into debris flows to be exported quickly out of the mountain areas towards the lowlands. Main factors affecting landslide occurrence were total storm rainfall and intensity, aspect, geology and vegetation association. Two processes can be distinguished as initiating slope failure. Accumulation of rainfall from exposed bedrock slopes, generating excess overland flow, was the main process linked to failures in concave topography. A combination of wind and excess overland flow in the more convex or planar upper slopes was a secondary process related to heterogeneity of vegetation associations in the oak-dry tropical forests ecotone, as uprooted trees dislodged large regolith and bedrock blocks, priming hillslopes for further runoff concentration. An estimative threshold curve for triggering landslides in this region is sketched. From the analysis of historical information, storms like Juliette approach the southern peninsula on average once every 100 years. Denudation estimates are in the higher end of the spectrum for a tectonically passive margin. These estimates should be considered when taking decisions regarding management of water resources in this area through damming of streams. The results emphasize the need for a more detailed representation of the spatial distribution of the rainfall and winds for this mountainous region affected by TCs.
publishDate 2012
dc.date.none.fl_str_mv 2012-10-17
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://www.revistascca.unam.mx/atm/index.php/atm/article/view/28079
url https://www.revistascca.unam.mx/atm/index.php/atm/article/view/28079
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://www.revistascca.unam.mx/atm/index.php/atm/article/view/28079/33129
dc.rights.none.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 Instituto de Ciencias de la Atmósfera y Cambio Climático, Universidad Nacional Autónoma de México
publisher.none.fl_str_mv Instituto de Ciencias de la Atmósfera y Cambio Climático, Universidad Nacional Autónoma de México
dc.source.none.fl_str_mv Atmósfera; Vol. 26 Núm. 2 (2013)
Atmósfera; Vol. 26 No. 2 (2013)
2395-8812
0187-6236
reponame:Atmósfera
instname:UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO
instacron:UNAM
instname_str UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO
instacron_str UNAM
institution UNAM
reponame_str Atmósfera
collection Atmósfera
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1858176617192357888
spelling OCCURRENCE OF LANDSLIDES DURING THE APPROACH OF TROPICAL CYCLONE JULIETTE (2001) TO BAJA CALIFORNIA SUR, MEXICO (edited by G. B. Raga).OCCURRENCE OF LANDSLIDES DURING THE APPROACH OF TROPICAL CYCLONE JULIETTE (2001) TO BAJA CALIFORNIA SUR, MEXICO (edited by G. B. Raga).Antinao, José LuisFarfán, Luis M.Tropical cycloneeastern Pacific OceanJuliettelandslidessediment transport.The approach of tropical cyclone (TC) Juliette, in 2001, to the Baja California Peninsula triggered at least 419 landslides. Most of the landslides were shallow slips and debris slides of limited areal extent, which were converted rapidly into debris flows to be exported quickly out of the mountain areas towards the lowlands. Main factors affecting landslide occurrence were total storm rainfall and intensity, aspect, geology and vegetation association. Two processes can be distinguished as initiating slope failure. Accumulation of rainfall from exposed bedrock slopes, generating excess overland flow, was the main process linked to failures in concave topography. A combination of wind and excess overland flow in the more convex or planar upper slopes was a secondary process related to heterogeneity of vegetation associations in the oak-dry tropical forests ecotone, as uprooted trees dislodged large regolith and bedrock blocks, priming hillslopes for further runoff concentration. An estimative threshold curve for triggering landslides in this region is sketched. From the analysis of historical information, storms like Juliette approach the southern peninsula on average once every 100 years. Denudation estimates are in the higher end of the spectrum for a tectonically passive margin. These estimates should be considered when taking decisions regarding management of water resources in this area through damming of streams. The results emphasize the need for a more detailed representation of the spatial distribution of the rainfall and winds for this mountainous region affected by TCs.El acercamiento del ciclón tropical Juliette en 2001 a la península de Baja California provocó por lo menos 419 deslizamientos. Éstos corresponden en su mayoría a derrumbes someros de extensión reducida que fueron convertidos rápidamente en flujos de detritos para ser exportados de las áreas montañosas hacia áreas bajas. Los factores principales que afectan la ocurrencia de deslizamientos en esta zona son la precipitación total y su intensidad, así como la orientación, la geología y la vegetación. Se pueden distinguir dos procesos como iniciadores de los derrumbes. El primero de ellos es la acumulación de escorrentía por precipitación intensa sobre rocas expuestas, lo cual genera exceso de escurrimiento superficial que acarrea regolito. Éste es el proceso principal en topografía cóncava. La combinación de viento y de exceso de escurrimiento en las pendientes altas convexas o planas constituye un proceso secundario relacionado con la heterogeneidad de las asociaciones de vegetación en el límite entre los bosques tropical seco y de roble. Los árboles arrancados desprendieron bloques completos de regolito y roca, lo cual preparó las laderas para la concentración adicional de escurrimiento superficial. Se ha estimado una curva para el umbral de deslizamientos en esta región. Asimismo, con base en el análisis de la información histórica, se ha determinado que tormentas como Juliette se acercan al sur de la península en promedio una vez cada 100 años. Las estimaciones de la denudación provocada directamente por deslizamientos se ubican en la parte más alta del espectro para un margen tectónico pasivo. Estas estimaciones deben considerarse en la toma de decisiones vinculadas con el manejo de los recursos hídricos en esta región. Los resultados acentúan la necesidad de contar con una representación más detallada de la distribución espacial de la precipitación y vientos para esta región montañosa afectada por ciclones tropicales.Instituto de Ciencias de la Atmósfera y Cambio Climático, Universidad Nacional Autónoma de México2012-10-17info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistascca.unam.mx/atm/index.php/atm/article/view/28079Atmósfera; Vol. 26 Núm. 2 (2013)Atmósfera; Vol. 26 No. 2 (2013)2395-88120187-6236reponame:Atmósferainstname:UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICOinstacron:UNAMenghttps://www.revistascca.unam.mx/atm/index.php/atm/article/view/28079/33129info:eu-repo/semantics/openAccessoai:ojs.pkp.sfu.ca:article/280792024-08-16T16:52:37Z
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