2. Hydrological cycle#
Fig. 2.1 Schematic overview of the hydrological cycle (U.S. Geological Survey, n.d.).#
Nomenclature
Symbol |
Quantity |
Quantity name in Dutch |
Dimension |
Widely used unit (if not SI) |
|---|---|---|---|---|
\(A\) |
Area |
Oppervlakte |
[L\(^2\)] |
- |
\(A_\text{s}\) |
Area of soil |
Oppervlakte van bodem |
[L\(^2\)] |
- |
\(A_\text{w}\) |
Area of surface water |
Oppervlakte van oppervlaktewater |
[L\(^2\)] |
- |
\(C\) |
Capillary rise |
Capillaire stijging |
[L/T] |
- |
\(E\) |
Evaporation |
Verdamping |
[L/T] |
- |
\(E_\text{i}\) |
Interception |
Interceptie |
[L/T] |
- |
\(E_\text{t}\) |
Transpiration |
Transpiratie |
[L/T] |
- |
\(E_\text{s}\) |
Soil evaporation |
Bodemverdamping |
[L/T] |
- |
\(E_\text{o}\) |
Open water evaporation |
Verdamping van open water |
[L/T] |
- |
\(F\) |
Net flux to atmosphere |
Nettostroom naar de atmosfeer |
[L\(^3\)/T] |
- |
\(I\) |
Infiltration to unsaturated zone |
Infiltratie naar de onverzadigde zone |
[L\(^3\)/T] |
- |
\(L\) |
Leakage |
Wegzijging |
[L/T] |
- |
\(N\) |
Spillage |
Verlies |
[L\(^3\)/T] |
- |
\(O_\text{des}\) |
Desired withdrawal for a reservoir |
Gewenste onttrekking voor een reservoir |
[L\(^3\)] |
- |
\(P\) |
Precipitation |
Neerslag |
[L/T] |
- |
\(Q\) |
River discharge |
Rivierafvoer |
[L\(^3\)/T] |
- |
\(Q_\text{g,o}\) |
Subsurface runoff to ocean |
Grondwaterafvoer naar de oceaan |
[L\(^3\)/T] |
- |
\(Q_\text{g,w}\) |
Subsurface runoff to open water |
Grondwaterafvoer naar open water |
[L\(^3\)/T] |
- |
\(Q_\text{in}\) |
Incoming fluxes |
Inkomende stromen |
[L\(^3\)/T] |
- |
\(Q_\text{out}\) |
Outgoing fluxes |
Uitgaande stromen |
[L\(^3\)/T] |
- |
\(Q_\text{r}\) |
Rapid runoff through the soil |
Snelle afvoer door de bodem |
[L\(^3\)/T] |
- |
\(Q_\text{s}\) |
Surface flow to open water |
Oppervlaktewaterafvoer naar open water |
[L\(^3\)/T] |
- |
\(R\) |
Recharge |
Percolatie |
[L/T] |
- |
\(S\) |
Storage |
Opslag |
[L\(^3\)] |
- |
\(S_\text{g}\) |
Storage in saturated zone (groundwater) |
Opslag in verzadigde zone (grondwater) |
[L\(^3\)] |
- |
\(S_\text{max}\) |
Reservoir storage size |
Grootte van reservoiropslag |
[L\(^3\)] |
- |
\(S_\text{s}\) |
Storage on the land surface |
Opslag op het landoppervlak |
[L\(^3\)] |
- |
\(S_\text{u}\) |
Storage in the soil (soil moisture in the unsaturated zone) |
Opslag in de bodem (bodemvocht in de onverzadigde zone) |
[L\(^3\)] |
- |
\(S_\text{w}\) |
Storage in open water |
Opslag in open water |
[L\(^3\)] |
- |