Mostrar el registro sencillo del ítem

dc.contributor.author
Trauth, Martin H.  
dc.contributor.author
Alonso, Ricardo Narciso  
dc.contributor.author
Haselton, Kirk R.  
dc.contributor.author
Hermanns, Reginald L.  
dc.contributor.author
Strecker, Manfred R.  
dc.date.available
2021-03-25T19:24:05Z  
dc.date.issued
2000-06-30  
dc.identifier.citation
Trauth, Martin H.; Alonso, Ricardo Narciso; Haselton, Kirk R.; Hermanns, Reginald L.; Strecker, Manfred R.; Climate change and mass movements in the northwest Argentine Andes; Elsevier Science; Earth and Planetary Science Letters; 179; 2; 30-6-2000; 243-256  
dc.identifier.issn
0012-821X  
dc.identifier.uri
http://hdl.handle.net/11336/128954  
dc.description.abstract
The chronology of multiple landslide deposits and related lake sediments in the eastern Argentine Cordillera suggests that major mass movements cluster in two time periods during the Quaternary: between 35 000 and 25 000 14C yr BP and after 5000 14C yr BP. The older cluster may correspond to the Minchin wet period (40 000 and 25 000 14C yr BP) identified in tropical and subtropical South America, suggesting a causal relation between enhanced landslide activity and climate change. The younger cluster predates the Titicaca wet period that began at about 3900 14C yr BP which also affected other regions in the Andes and the Amazon Basin. No landslide and associated lake sediments are documented during the Tauca wet period (between 16 000 and 8000 14C yr BP). However, the two clusters correspond to periods where it assumed that the El Niño/Southern Oscillation (ENSO) and tropical Atlantic sea surface temperature dipole (TAD) were active. The analysis of the present-day precipitation patterns in NW Argentina indicates significant spatial and temporal differences between the intra-Andean part of the study area and the Andean foreland. Whereas the TAD seems to consistently increase rainfall, the intensity of precipitation during the El Niño phase of the ENSO is reduced to only 25% of the mean annual average in the intra-Andean basins, whereas the regions east of the Andes receive more than 125%. Similar results, but with an opposite sign, characterize La Niña events. The comparison of this pattern with paleo-precipitation data as inferred from varved lake sediments suggests that increased interannual climate variability and, therefore, increased fluctuations in rainfall and river discharge in narrow valleys may reduce landsliding thresholds.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Elsevier Science  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
ARGENTINA  
dc.subject
EL NINO  
dc.subject
LAKE SEDIMENTS  
dc.subject
LANDSLIDES  
dc.subject
PALEOCLIMATE  
dc.subject
QUATERNARY  
dc.subject
SOUTHERN OSCILLATION  
dc.subject.classification
Geología  
dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
Climate change and mass movements in the northwest Argentine Andes  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2021-03-15T14:41:24Z  
dc.journal.volume
179  
dc.journal.number
2  
dc.journal.pagination
243-256  
dc.journal.pais
Países Bajos  
dc.journal.ciudad
Amsterdam  
dc.description.fil
Fil: Trauth, Martin H.. Universitat Potsdam; Alemania  
dc.description.fil
Fil: Alonso, Ricardo Narciso. Universidad Nacional de Salta; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta; Argentina  
dc.description.fil
Fil: Haselton, Kirk R.. Universitat Potsdam; Alemania  
dc.description.fil
Fil: Hermanns, Reginald L.. Universitat Potsdam; Alemania  
dc.description.fil
Fil: Strecker, Manfred R.. Universitat Potsdam; Alemania  
dc.journal.title
Earth and Planetary Science Letters  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0012821X00001278  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/S0012-821X(00)00127-8