Mahmoud Zemzami, Lahcen Benaabidate, Ben Abbou Mohamed, Badr Layan and Ilias Bouaamlat
The Use of Mathematical Interpolation Modeling and Statistical Analysis to Explain the Spatial Variability of Annual Rainfall in the Moulouya Watershed, Morocco
The knowledge of spatial variability of rainfall is extremely important information for hydrologists and meteorologists. This variability is highly dependents on meteorological conditions and relief. The use of geostatistical methods in the study of the space variation of annual rainfall led to understand and explain some aspect of this variation and to calculate values of rainfall in unmeasured regions to best cover the entire study area. This study seeks to evaluate spatial interpolation techniques and understand the spatial variability of annual rainfall in Moulouya watershed, which is actually belonging to a national plan of water resources modeling. Rainfall records of 74 rain stations are used in this study covering an area of about 53,000 km2. Two types of kriging methods were used in this paper: simple Kriging and co-kriging.
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