| Title |
Development of Regional Regression Model for Estimating Flow Duration Curves in Ungauged Basins |
| Authors |
이태희(Lee, Tae Hee) ; 이민호(Lee, Min Ho) ; 이재응(Yi, Jaeeung) |
| DOI |
https://doi.org/10.12652/Ksce.2016.36.3.0427 |
| Keywords |
미계측 유역;유황곡선;유역특성인자;지역회귀모형 Ungauged basin;Flow duration curve (FDC);Basin characteristics;Regional regression model |
| Abstract |
The objective of this study is to develop the regional regression models based on the physiographical and climatological characteristics for estimating flow duration curve (FDC) in ungauged bsisns. To this end, the lower sections with duration from 185 to 355 days of FDCs were constructed from the 16 gauged streamflow data, which were fitted to the two-parameter logarithmic type regression equation. Then, the parameters of the equation were regionalized using the basin characteristics such as basin area, basin slope, drainage density, mean annual precipitation, mean annual streamflow, runoff curve number in order that the proposed regression model can be used for ungauged basin. From the comparison of the estimated by the regional regression model with the observed ones, the model with the combination of basin area, runoff curve number, mean annual precipitation showed the best performance. |