Details
| Original language | English |
|---|---|
| Article number | 104606 |
| Journal | Environmental Modelling and Software |
| Volume | 124 |
| Early online date | 16 Dec 2019 |
| Publication status | Published - Feb 2020 |
Abstract
Karstification is considered as one of the most common reasons for interbasin groundwater flow (IGF). IGF in some karst areas could be significant such that it must be accounted for in hydrologic modeling. In this study, the Soil and Water Assessment Tool (SWAT) was modified to explicitly account for IGF in karst areas. The modified model uses two conceptual models to simulate hydrologic processes in karst and non-karst regions. The modified model was applied in the karst-dominated region in the southwest Harz Mountains, Germany. Multisite streamflow data and satellite-derived actual evapotranspiration (ETa) were used for model calibration. Results show that (1) the modified model can be satisfactorily calibrated and validated for streamflow and ETa (2) the model performance for ETa and streamflow at some gauging stations are highly correlated, and (3) the use of satellite-derived ETa does not affect the model performance.
Keywords
- Calibration, Interbasin groundwater flow, Karst, Modified SWAT, Satellite-derived evapotranspiration
ASJC Scopus subject areas
- Computer Science(all)
- Software
- Environmental Science(all)
- Environmental Engineering
- Environmental Science(all)
- Ecological Modelling
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In: Environmental Modelling and Software, Vol. 124, 104606, 02.2020.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Modeling interbasin groundwater flow in karst areas
T2 - Model development, application, and calibration strategy
AU - Nguyen, Van Tam
AU - Dietrich, Jörg
AU - Uniyal, Bhumika
PY - 2020/2
Y1 - 2020/2
N2 - Karstification is considered as one of the most common reasons for interbasin groundwater flow (IGF). IGF in some karst areas could be significant such that it must be accounted for in hydrologic modeling. In this study, the Soil and Water Assessment Tool (SWAT) was modified to explicitly account for IGF in karst areas. The modified model uses two conceptual models to simulate hydrologic processes in karst and non-karst regions. The modified model was applied in the karst-dominated region in the southwest Harz Mountains, Germany. Multisite streamflow data and satellite-derived actual evapotranspiration (ETa) were used for model calibration. Results show that (1) the modified model can be satisfactorily calibrated and validated for streamflow and ETa (2) the model performance for ETa and streamflow at some gauging stations are highly correlated, and (3) the use of satellite-derived ETa does not affect the model performance.
AB - Karstification is considered as one of the most common reasons for interbasin groundwater flow (IGF). IGF in some karst areas could be significant such that it must be accounted for in hydrologic modeling. In this study, the Soil and Water Assessment Tool (SWAT) was modified to explicitly account for IGF in karst areas. The modified model uses two conceptual models to simulate hydrologic processes in karst and non-karst regions. The modified model was applied in the karst-dominated region in the southwest Harz Mountains, Germany. Multisite streamflow data and satellite-derived actual evapotranspiration (ETa) were used for model calibration. Results show that (1) the modified model can be satisfactorily calibrated and validated for streamflow and ETa (2) the model performance for ETa and streamflow at some gauging stations are highly correlated, and (3) the use of satellite-derived ETa does not affect the model performance.
KW - Calibration
KW - Interbasin groundwater flow
KW - Karst
KW - Modified SWAT
KW - Satellite-derived evapotranspiration
UR - http://www.scopus.com/inward/record.url?scp=85076772883&partnerID=8YFLogxK
U2 - 10.1016/j.envsoft.2019.104606
DO - 10.1016/j.envsoft.2019.104606
M3 - Article
AN - SCOPUS:85076772883
VL - 124
JO - Environmental Modelling and Software
JF - Environmental Modelling and Software
SN - 1364-8152
M1 - 104606
ER -