Droog

Cover voor proefschrift "On the Propagation of Drought".

Citaat uit deze PhD-thesis (door A. F. v. Loon):

The [top image] (...) represents a cold-snow season drought, in which below-normal temperatures cause snow accumulation and soil frost resulting in decreasing soil moisture and lowering of the groundwater table.

The [bottom image] (...) depicts a classical rainfall deficit drought, in which a lack of precipitation causes decreasing soil moisture (leading to cracks) and lowering of the groundwater table.