Research Article
SPEI-Based Spatiotemporal Analysis of Drought in Haihe River Basin from 1961 to 2010
Figure 3
The interannual variability of (a) spring, (b) summer, (c) autumn, and (d) winter SPEI value (left) and water deficit (right).
| (a) |
| (b) |
| (c) |
| (d) |