Modificación del curso de los ríos en la cuenca del Senguer: período 1994-2013

Published in In book: Geotecnologías del Sur Argentino. Casos de Estudios (pp.487-494) Chapter: 38, Editors: Julio A. Uboldi, Guillermo R. Angeles, Jorge O. Gentili, Alejandra M. Geraldi, Walter D. Melo, M. Elizabeth Carbone
Authors

Scordo, F., Piccolo, M.C. and Perillo, G.M.E.
Publication year 2014
DOI n/a
Affiliations
  • Universidad Nacional del Sur, Departamento de Geografía y Turismo
  • Instituto Argentino de Oceanografía. Consejo Nacional de Investigaciones Científicas y Técnicas (IADOCONICET)
  • Universidad Nacional del Sur. Departamento de Geología. Bahía Blanca, Buenos Aires. Argentina.

 
IAI Program

CRN3
IAI Project CRN3038
Keywords
Stream
satellite images
shapes

Abstract

The Senguer river basin has a complex nivo-pluvial regime. A decrease in precipitation rate and an increase in temperature results in a decrease in water availability and therefore a disminution of permanent channels. The Senguer river basin stream changes from 1994 to 2013 are analyzed. The Instituto Geográfico Nacional (IGN) shape of permanent stream based on satellite images of 1994 was used. Basin mosaic was performed using 2013 Spot and Google Earth georreferenced images and overlapped IGN shape. The current extent of the streams was related with precipitation and temperature data from three meteorological stations in the basin (Subsecretaría de Recursos Hídricos de la Nación). A decreasing trend in precipitation was observed in all stations and in two of them a temperature rise was observed. These weather conditions cause a loss of water resource availability during autumn and winter. The analysis showed that 33 % of rivers considered permanent by IGN in 1994 they are not present today.