Caracterización de la precipitación espacial en las cuencas hidrográficas de los ríos Tomebamba y Yanuncay

Abstract

Knowledge of environmental variables is important because of their influence on human activities. A factor of interest is precipitation. The water resource is essential for the development of the populations, being vital for activities such as livestock, agriculture, industry, domestic activities, generation of electricity and for the development of life itself. Throughout the years, measurement techniques and equipment have been implemented to collect information on precipitation in an area of interest. The objective of this work was to characterize precipitation in the Tomebamba and Yanuncay hydrographic basins through the use of precipitation images from the CAXX meteorological radar. The study was carried out at the level of sub-basins, altitudinal zones and land use, reporting values of average monthly precipitation, standard deviation, cell with maximum value of precipitation and cell with minimum value of precipitation. Map statistics were applied using Python 2.7.12 software and cartographic files were processed using ArcGis 10.5 software. The characteristics of the precipitation in each sub-basin during wet and dry months of 2016-2017 were defined. In addition, the distribution of precipitation between the sub-basins was compared and the correlation between precipitation and altitude was calculated using a simple linear regression. The results showed that there is a high correlation between the precipitations of the sub-basins, being in Yanuncay always lower than in Tomebamba, but there is a low correlation between precipitation and altitude. By other hand, at the level of land use, rainfall did not present any pattern.