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Abstract:

Streamflows have a direct dependence on precipitation and these are directly linked to climate. Then, in this paper the temporal climatic variability in the 'Rio de la Plata' Basin is analysed through the changes in the river's discharges. These are the reflection of the climatic inputs areally integrated, and in consequence, contain more information on climate variability than that provided by the scarce punctual records of precipitation and temperature. The time series of streamflows correspond to monthly and annual means in stations selected in the basin for the period 1931-1992. However, in the present paper, the period 1901-1992 was considered in all eases whenever possible. The following changes and tendencies in the flow series were detected: 1. An important change of tendency between 1970 and 1972, and another not so significant before that date were detected in 1917-1918 and 1943-1944. 2. The jumps in the means in several sub-periods were detected using different methods. They showed jumps mainly in the period 1970-1972 in the annual streamflows series. The jumps in the annual streamflow series consist of an abrupt change in climatic variables affecting temporarily the averages of such variables during a certain period of time (years). The results are consistent with the conclusions obtained by other authors for the same region, both in precipitation and in the general circulation of the atmosphere. Keeping in mind this analysis of the series of streamflows, indicators of normal variability of tendencies relative to natural regional causes were detected, although the local causes were not anthropogenically analysed, and so no other manifestations of randomless in the zone of the Basin under study because of the lacking of data.

Registro:

Documento: Artículo
Título:The temporal climatic variability in the 'Rio de la Plata' Basin displayed by the river discharges
Autor:García, N.O.; Vargas, W.M.
Filiación:Fac. de Ing. y Cie. Hídricas, Universidad Nacional del Litoral, Ciudad Universitaria, C.C. 495, Paraje El Pozo, (3000) Santa Fe - R., Argentina
Fac. de Ciencias Exactes y Naturales, Univ. de Buenos Aires - CONICET, Ciudad Universitaria, Pabellón 2, (1428) Buenos Aires - R., Argentina
Palabras clave:climate change; climate variation; river discharge; stream flow; Argentina, Buenos Aires Province, Rio de la Plata
Año:1998
Volumen:38
Número:3
Página de inicio:359
Página de fin:379
DOI: http://dx.doi.org/10.1023/A:1005386530866
Título revista:Climatic Change
Título revista abreviado:Clim. Change
ISSN:01650009
CODEN:CLCHD
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01650009_v38_n3_p359_Garcia

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Citas:

---------- APA ----------
García, N.O. & Vargas, W.M. (1998) . The temporal climatic variability in the 'Rio de la Plata' Basin displayed by the river discharges. Climatic Change, 38(3), 359-379.
http://dx.doi.org/10.1023/A:1005386530866
---------- CHICAGO ----------
García, N.O., Vargas, W.M. "The temporal climatic variability in the 'Rio de la Plata' Basin displayed by the river discharges" . Climatic Change 38, no. 3 (1998) : 359-379.
http://dx.doi.org/10.1023/A:1005386530866
---------- MLA ----------
García, N.O., Vargas, W.M. "The temporal climatic variability in the 'Rio de la Plata' Basin displayed by the river discharges" . Climatic Change, vol. 38, no. 3, 1998, pp. 359-379.
http://dx.doi.org/10.1023/A:1005386530866
---------- VANCOUVER ----------
García, N.O., Vargas, W.M. The temporal climatic variability in the 'Rio de la Plata' Basin displayed by the river discharges. Clim. Change. 1998;38(3):359-379.
http://dx.doi.org/10.1023/A:1005386530866