Abstract

MARQUEZ-ROMANCE, Adriana Mercedes; GUEVARA PEREZ, Edilberto; PEREZ-PACHECO, Sergio Alejandro  and  BUROZ-CASTILLO, Eduardo. Spatio-temporal prediction of water production in basins without records. Dyna rev.fac.nac.minas [online]. 2022, vol.89, n.220, pp.110-120.  Epub Sep 13, 2022. ISSN 0012-7353.  https://doi.org/10.15446/dyna.v89n220.95985.

This study carried out the spatio-temporal prediction of water production in two micro-basins without records, located in Venezuela. Geomorphological characteristics of micro-basins were obtained using digital elevation models acquired from ALOS PALSAR satellite. Two models were included for spatio-temporal prediction of hydrometeorological variables. The first model involved deterministic and stochastic components, calibrated using two-time series (TS). TS-1 consisted of records from 227 precipitation stations and 62 evaporation stations managed by the Environment Ministry during 1980-1999. TS-2 included records from 28 precipitation stations and 18 evapotranspiration stations collected by the National Institute of Meteorology and Hydrology during 2015-2018. The second model estimated effective precipitation from TS-2 precipitation maps, runoff coefficient from land use and land cover (LULC) prediction. The LULC was estimated on 59 Landsat 8OLI images for 2015-2018. The validation was carried out with observations of the Hydrological Central Company, resulting in determination coefficients upper to 0.95.

Keywords : satellite images; digital elevation models; stochastic models; deterministic models.

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