This shows you the differences between two versions of the page.
Both sides previous revision Previous revision | Next revision Both sides next revision | ||
start:hype_model_description:hype_np_soil [2019/12/19 16:20] cpers [Soil erosion] |
start:hype_model_description:hype_np_soil [2019/12/19 16:44] cpers [Soil erosion] |
||
---|---|---|---|
Line 138: | Line 138: | ||
<m> MobilisedSR = {{(sflow*365)^{sreroexp}} * (1-common_{groundcover}) * {1/{0.5*soilcoh}} * sin(slope/100)} / 365 </m> | <m> MobilisedSR = {{(sflow*365)^{sreroexp}} * (1-common_{groundcover}) * {1/{0.5*soilcoh}} * sin(slope/100)} / 365 </m> | ||
- | All mobilized particles is not removed from the field, because sometimes the transport capacity of the particle-bearing water (//eflow//) will not suffice for the task. A //transportfactor// will reduce the particle amount: | + | All mobilised particles is not removed from the field, because sometimes the transport capacity of the particle-bearing water (//eflow//) will not suffice for the task. A //transportfactor// will reduce the particle amount: |
<m> transportfactor = MIN(1.0,(eflow {/} 4)^{1.3}) </m> | <m> transportfactor = MIN(1.0,(eflow {/} 4)^{1.3}) </m> | ||
- | Eroded sediment (kg/km2) is calculated as: | + | Mobilised sediment (kg/km2) is calculated as: |
<m> mobilSed = 1000 * (MobilisedRain + MobilisedSR) * transportfactor </m> | <m> mobilSed = 1000 * (MobilisedRain + MobilisedSR) * transportfactor </m> | ||
| | ||
- | The alternative erosion model calculates mobilized sediment (//mobilSed// (kg/km2)) based on rainfall (//rain//) and a number of model parameters and subbasin input data. | + | The alternative erosion model calculates mobilised sediment (//mobilSed// (kg/km2)) based on rainfall (//rain//) and a number of model parameters and subbasin input data. |
<m> mobilSed = 1000. * ({slope / 5})^{erodslope} * erodluse * erodsoil * {EI/erodindex} * rain^{erodexp} </m> | <m> mobilSed = 1000. * ({slope / 5})^{erodslope} * erodluse * erodsoil * {EI/erodindex} * rain^{erodexp} </m> |