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Abstract:

Under the current global warming trend, droughts are expected to increase, with serious implications for water resources management. This study analyzed the regional aspects of droughts in terms of streamflow deficiencies over the Andean rivers of Patagonia, Argentina. Based on the variable threshold level method, the main characteristics of streamflow droughts were obtained for the hydrological years 1962/63-2014/15, considering three different severity levels over 11 representative basins. Two distinct regional behaviors were identified in terms of temporal variations of streamflow drought duration and its cumulative deficit volume, dividing the study area into North and Central Patagonia. The effects of the Southern Annular Mode (SAM), the El Niño-Southern Oscillation (ENSO), and the Pacific Decadal Oscillation (PDO) on the interannual and interdecadal variability of streamflow droughts were assessed through an empirical decomposition applied to the regional time series. These large-scale climatic oscillations have a distinct regional and temporal behavior in terms of the modulation of streamflow drought variability. Considering the interannual streamflow drought variability, the El Niño signal is more consistent and contributes with humid conditions, especially over North Patagonia. The multi-decadal component of the streamflow drought time series is linked to the upward trend in SAM, particularly over Central Patagonia. © IWA Publishing 2018.

Registro:

Documento: Artículo
Título:Regional aspects of streamflow droughts in the Andean rivers of Patagonia, Argentina. Links with large-scale climatic oscillations
Autor:Rivera, J.A.; Araneo, D.C.; Penalba, O.C.; Villalba, R.
Filiación:Instituto Argentino de Nivologia, Glaciologia y Ciencias Ambientales (CCT-Mendoza/CONICET), Av. Ruiz Leal s/n, Parque General San Martín, Mendoza, 5500, Argentina
Departamento de Ciencias de la Atmósfera y los Océanos, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Intendente Güiraldes 2160, Pabellón 2, Buenos Aires, C1428EGA, Argentina
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Rivadavia 1917, Buenos Aires, C1033AAJ, Argentina
Palabras clave:Andes; Climate forcings; Patagonia; Streamflow droughts; Temporal variability; Water resources; Atmospheric pressure; Climatology; Drought; Global warming; Nickel; Stream flow; Time series; Andes; Climate forcings; Inter-decadal variability; Pacific decadal oscillation; Patagonia; Southern Annular Mode; Temporal variability; Water resources management; Water resources; annual variation; climate forcing; climate oscillation; climate signal; drought; El Nino-Southern Oscillation; global warming; Pacific Decadal Oscillation; streamflow; temporal variation; water resource; Andes; Argentina; Patagonia
Año:2018
Volumen:49
Número:1
Página de inicio:134
Página de fin:149
DOI: http://dx.doi.org/10.2166/nh.2017.207
Título revista:Hydrology Research
Título revista abreviado:Hydrol. Res.
ISSN:19989563
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_19989563_v49_n1_p134_Rivera

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Citas:

---------- APA ----------
Rivera, J.A., Araneo, D.C., Penalba, O.C. & Villalba, R. (2018) . Regional aspects of streamflow droughts in the Andean rivers of Patagonia, Argentina. Links with large-scale climatic oscillations. Hydrology Research, 49(1), 134-149.
http://dx.doi.org/10.2166/nh.2017.207
---------- CHICAGO ----------
Rivera, J.A., Araneo, D.C., Penalba, O.C., Villalba, R. "Regional aspects of streamflow droughts in the Andean rivers of Patagonia, Argentina. Links with large-scale climatic oscillations" . Hydrology Research 49, no. 1 (2018) : 134-149.
http://dx.doi.org/10.2166/nh.2017.207
---------- MLA ----------
Rivera, J.A., Araneo, D.C., Penalba, O.C., Villalba, R. "Regional aspects of streamflow droughts in the Andean rivers of Patagonia, Argentina. Links with large-scale climatic oscillations" . Hydrology Research, vol. 49, no. 1, 2018, pp. 134-149.
http://dx.doi.org/10.2166/nh.2017.207
---------- VANCOUVER ----------
Rivera, J.A., Araneo, D.C., Penalba, O.C., Villalba, R. Regional aspects of streamflow droughts in the Andean rivers of Patagonia, Argentina. Links with large-scale climatic oscillations. Hydrol. Res. 2018;49(1):134-149.
http://dx.doi.org/10.2166/nh.2017.207