Temporal patterns and spatial scale of soil water variability in a small humid catchment
Summary, in English
Temporal and spatial variability of soil water content on mainly two different scales is visualized by means of correlation analyses. The soil water data were collected at seven sites for a period of about ten years. The spatial variability of soil water in the unsaturated zone is illustrated and discussed from the aspects of interdepth, intersite and temporal changes respectively. The results in terms of the correlation structure show an increase in spatial variability when depth increases. Three soil layers with different patterns of variability are identified: 0-60, 60-140, and 140-240 cm. It is concluded that the mean time series values of the soil water content do not differ significantly within horizontal distances of about 10-20m. For distances of about 1100m this variation may be more than 5% by volume in absolute values. Higher spatial variability is noted during the summer period (May-September).
- Division of Water Resources Engineering
Journal of Hydrology
- Oceanography, Hydrology, Water Resources
- ISSN: 0022-1694