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start:hype_model_description:aquifier [2018/09/10 10:04] cpers [Nutrient processes related to aquifers] |
start:hype_model_description:aquifier [2020/03/11 09:09] cpers [Deep percolation delay and aquifer recharge] |
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==== Deep percolation delay and aquifer recharge ==== | ==== Deep percolation delay and aquifer recharge ==== | ||
- | Deep percolation from soil and rivers in all recharge subbasins of an aquifer is added together. This total deep percolation (//qperc//) is delayed before it recharges the aquifer (//qrech//). | + | Deep percolation from soil and rivers in all recharge subbasins of an aquifer is added together. This total deep percolation (<m>q_{perc}</m>) is delayed before it recharges the aquifer (<m>q_{rech}</m>). |
- | The delay property (//delay//, in days) is specific for each aquifer. It can be adjusted by the parameter region dependent model parameter //aqdelcor//. | + | <m> q_{rech}(t) = (1-coeff) * q_{perc}(t) + coeff * q_{rech}(t-1) </m> |
+ | |||
+ | <m> coeff = e ^ {-1/delayts} </m> | ||
+ | |||
+ | The delay property (//delayts//, in timesteps per day) is specified for each aquifer (//delay// in days). It can be adjusted by the parameter region dependent model parameter //aqdelcor//. | ||
==== Return flow from aquifer ==== | ==== Return flow from aquifer ==== | ||
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|:::|//fc//|//wcfc, wcfc1, wcfc2, wcfc3//|:::| | |:::|//fc//|//wcfc, wcfc1, wcfc2, wcfc3//|:::| | ||
|Deep percolation delay and aquifer recharge| |//recharge//|[[start:hype_file_reference:aquiferdata.txt|AquiferData.txt]]| | |Deep percolation delay and aquifer recharge| |//recharge//|[[start:hype_file_reference:aquiferdata.txt|AquiferData.txt]]| | ||
- | |:::|//delay// calculated from |//delay//|[[start:hype_file_reference:aquiferdata.txt|AquiferData.txt]]| | + | |:::|//delay// |//delay//|:::| |
- | |:::|:::|//aqdelcorr//|[[start:hype_file_reference:par.txt|par.txt]]| | + | |:::|//aqdelcorr// |//aqdelcorr//|[[start:hype_file_reference:par.txt|par.txt]]| |
|Return flow from aquifer|//retrate, retfrac// |//retrate, retfrac//|[[start:hype_file_reference:aquiferdata.txt|AquiferData.txt]]| | |Return flow from aquifer|//retrate, retfrac// |//retrate, retfrac//|[[start:hype_file_reference:aquiferdata.txt|AquiferData.txt]]| | ||
|:::|//aqretcorr// |//aqretcorr//|[[start:hype_file_reference:par.txt|par.txt]]| | |:::|//aqretcorr// |//aqretcorr//|[[start:hype_file_reference:par.txt|par.txt]]| |