NUMERICAL EXPERIMENTS TO CALIBRATE A HYDROLOGICAL MODEL BASED ON STREAMFLOW SIGNATURES AND HYDROLOGICAL TIME SERIES DATA
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- ARAI Ryosuke
- (一財)電力中央研究所 東北大学 大学院工学研究科
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- TOYODA Yasushi
- (一財)電力中央研究所
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- KAZAMA So
- 東北大学 大学院工学研究科
Bibliographic Information
- Other Title
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- 流量特性および水文時系列データに基づく水文モデル較正のための数値実験
Abstract
<p> One of methods to estimate hydrograph in ungauged basins is to calibrate a hydrological model through setting streamflow signatures or hydrological time series data as the objective variables. To detect the streamflow signatures or hydrological time series data which have ability to reproduce hydrograph as the objective variables in the calibration, numerical experiments were conducted in 23 basins in Japan. Note that we employed Baseflow index (BFI), Flashiness index (FI), annual runoff height (QMEAN), and 3 indices of flow duration curve (Q10, Q50, Q90) for the streamflow signatures, and terrestrial water storage anomaly (∆TWS) and soil water anomaly (∆SM) for the hydrological time series data. We found that ∆TWS has ability to reproduce hydrograph as the objective variables in the calibration. The reason is that ∆TWS can relate to all parameters within the hydrological model and have enough information of the model error due to time series data.</p>
Journal
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- Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)
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Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research) 78 (5), I_95-I_106, 2022
Japan Society of Civil Engineers
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Details 詳細情報について
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- CRID
- 1390576347187069312
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- ISSN
- 21856648
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
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- Abstract License Flag
- Disallowed