 |
 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Estimation of the IHACRES Model Parameters for Flood Estimation of Ungauged Catchments in the Upper Ping River Basin) ผู้เขียน: ดร.นุชนารถ ศรีวงศิตานนท์, ศาสตราจารย์ , ดร.วิษุวัฒก์ แต้สมบัติ, ผู้ช่วยศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractThe estimation of model parameters for ungauged catchments usually involves formulating relationships between model parameters and catchment characteristics from neighboring gauged catchments. This study examined the effectiveness of the IHACRES rainfall-runoff model for flood estimation in the upper Ping River basin (UPRB). As a first step, the model was calibrated for nine subcatchments in the basin. Relationships among catchment attributes (catchment area, drainage, slope and elongation) and six model parameters at nine runoff stations were derived using a multiple regression. A sensitivity analysis of the six IHACRES parameters at the P.4A station was carried out to determine the effect these parameters had on flood hydrograph characteristics. Regression relationships were then applied to estimate the model parameters at two independent runoff stations as if these catchments were ungauged and compared with model results if the parameters were chosen to give a best fit with recorded data. The results showed that the suggested relationships can be reasonably applied for flood estimation of the ungauged catchments within the UPRB. |
 ที่มา:มหาวิทยาลัยเกษตรศาสตร์หัวเรื่อง:Estimation of the IHACRES Model Parameters for Flood Estimation of Ungauged Catchments in the Upper Ping River Basin |
 |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Flood Investigation in the Upper Ping River Basin Using Mathematical Models) ผู้เขียน:ดร.วิษุวัฒก์ แต้สมบัติ, ผู้ช่วยศาสตราจารย์, ดร.นุชนารถ ศรีวงศิตานนท์, ศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractThe objective of this study was to evaluate the performance of two public domain models - the IHACRES (rainfall-runoff model) and the FLDWAV (hydrodynamic model) - using the upper Ping River basin as the study area. Rainfall, runoff and meteorological data on a daily basis were used for model calibration and verification. IHACRES was used to estimate ungauged flows for three subcatchments along the study reach between stations P.75 and P.73 of the Ping River, which were used subsequently as input data for FLDWAV. The IHACRES model parameters used for ungauged flood estimation of the three sub-catchments were calibrated at their neighboring gauging stations - P.20, P.76 and P.77. IHACRES was able to produce flood hydrographs close to the observed values at these three stations. The calibrated IHACRES model parameters were later used for flood estimation for three ungauged catchments and three selected flood events in 2001, 2003 and 2004, which were used subsequently as input data for FLDWAV. For the three selected flood events, FLDWAV was effective in estimating flood hydrographs that were also close to the observed values at all three stations - P.67, P.1 and P.73 - located along the Ping River. Even though they may not be as easy to use as some commercial models, these two public domain models are quite flexible and can be used in many circumstances and produce reasonable results that are as accurate as other commercial and non-commercial models. |
|
 |
|
|