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start:hype_model_description:aquifier [2017/01/04 17:26]
cpers [Deep percolation delay and aquifer recharge]
start:hype_model_description:aquifier [2020/12/02 09:43]
cpers [Aquifers]
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 ==== Regional groundwater to outlet lake ==== ==== Regional groundwater to outlet lake ====
  
-With an input variable in GeoData.txt,​ an outlet lake may be flagged to receive inflow from the regional groundwater. The coefficient (grwtolake) specifies the portion of the produced regional groundwater flow which is led to the subbasins outlet lake. +With an input variable in GeoData.txt,​ an outlet lake may be flagged to receive inflow from the regional groundwater. The coefficient (//grwtolake//) specifies the portion of the produced regional groundwater flow which is led to the subbasins outlet lake.  
 + 
 + 
 +==== Links to file reference ==== 
 + 
 +^Section ^Symbol ^Parameter/​Data ^File ^ 
 +|Soil regional groundwater flow creation| |//​grwtolake,​ grwdown//​|[[start:​hype_file_reference:​geodata.txt|GeoData.txt]]| 
 +|:::​|//​rcgrw//​ |//​rcgrw//​|[[start:​hype_file_reference:​par.txt|par.txt]]| 
 +|:::​|//​wp(k)//​|//​wcwp,​ wcwp1, wcwp2, wcwp3//​|:::​| 
 +|:::​|//​fc(k)//​|//​wcfc,​ wcfc1, wcfc2, wcfc3//​|:::​|
  
 ==== Links to relevant procedures in the code ==== ==== Links to relevant procedures in the code ====
Line 30: Line 39:
  
 ===== Aquifers ===== ===== Aquifers =====
 +
 +Aquifers are large water bodies covering several subbasins and located below the soillayers simulated by HYPE. They recieve water by percolation from land and river classes, and they return flow to a river. The aquifer is a large water body that can have a passive volume partaking in mixing but not return flow.
 +
 +
  
 ==== Deep percolation ==== ==== Deep percolation ====
Line 52: Line 65:
 ==== 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 ====
  
-Outflow from the aquifer depends on the water in the aquifer (//vol//) and a rate. The rate is determined by a parameter ​(//​retrate//​) and a regional ​adjustement ​parameter (//​aqretcor//​).+Outflow from the aquifer depends on the water in the aquifer (//vol//) and a rate. The rate is determined by a aquifer property ​(//​retrate//​) and a regional ​adjustment ​parameter (//​aqretcor//​, parameter region dependent).
  
  
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 The organic nitrogen, particulate phosphorus, and organic carbon in water percolating from soil and river stay in the soil/river, while temperature,​ inorganic nitrogen and SRP follow the water to the aquifer. Inorganic nitrogen is subjected to denitrification in the aquifer (see Chapter [[start:​hype_model_description:​hype_np_soil#​denitrification|Nitrogen and phosphorus in land routines - Denitrification]]). The organic nitrogen, particulate phosphorus, and organic carbon in water percolating from soil and river stay in the soil/river, while temperature,​ inorganic nitrogen and SRP follow the water to the aquifer. Inorganic nitrogen is subjected to denitrification in the aquifer (see Chapter [[start:​hype_model_description:​hype_np_soil#​denitrification|Nitrogen and phosphorus in land routines - Denitrification]]).
 +
 +==== Links to file reference ====
 +
 +^Section ^Symbol ^Parameter/​Data ^File ^
 +|Aquifers| |//aquid, subid, parreg//​|[[start:​hype_file_reference:​aquiferdata.txt|AquiferData.txt]]|
 +|:::​|:::​|//​basedepth,​ inidepth, porosity, area//|:::|
 +|Deep percolation|<​m>​rc_{grw}</​m>​ calculated from|//​rcgrw,​ rcgrwst, aqpercorr//​|[[start:​hype_file_reference:​par.txt|par.txt]]|
 +|:::​|//​wp//​|//​wcwp,​ wcwp1, wcwp2, wcwp3//​|:::​|
 +|:::​|//​fc//​|//​wcfc,​ wcfc1, wcfc2, wcfc3//​|:::​|
 +|Deep percolation delay and aquifer recharge| |//​recharge//​|[[start:​hype_file_reference:​aquiferdata.txt|AquiferData.txt]]|
 +|:::​|//​delay//​ |//​delay//​|:::​|
 +|:::​|//​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]]|
 +|:::​|//​aqretcorr//​ |//​aqretcorr//​|[[start:​hype_file_reference:​par.txt|par.txt]]|
 +|Nutrient processes related to aquifers| |//​topdepth,​ temp, conc_IN, conc_SP//​|[[start:​hype_file_reference:​aquiferdata.txt|AquiferData.txt]]|
 +|:::​|:::​|//​denitaq,​ hsatINs, wcep, wcfc, wcwp//​|[[start:​hype_file_reference:​par.txt|par.txt]]|
  
  
start/hype_model_description/aquifier.txt · Last modified: 2024/02/21 10:07 by cpers