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SLURP 모형을 이용한 광역적 수문분석 - 소양강댐 유역을 대상으로 -
임혁진 ( Lim Hyuk Jin ),권형중 ( Kwon Hyung Joong ),장철희 ( Jang Cheol Hee ),김성준 ( Kim Seong Joon ) 한국농공학회 2003 한국농공학회 학술대회초록집 Vol.2003 No.-
This study is to test the applicability of SLURP (Semi-distributed Land Use-based runoff Process) model that is a semi-distributed, continuous hydrologic model developed by Kite (1997). The Soyanggang-dam watershed (2,694km<sup>2</sup>) was selected. The DEM, land-cover map, monthly NDVI from NOAA/ A VHRR and daily meteorological data of 2001 were prepared. By using the parameter optimization technique, SCE-UA (Shuffled Complex Evolution-University of Arizona), the model was calibrated and the Nash-Sutcliffe efficiency was 0.73.
농촌 소유역에서의 비점오염물질 유출 특성 - 충남 공주시 정안면 고성리 지역을 대상으로 -
김진호 ( Kim Jin-ho ),한국헌 ( Han Kuk-heon ),류종수 ( Ryu Jong-su ),임혁진 ( Lim Hyuk-jin ),이경도 ( Lee Kyung-do ),권순국 ( Kwun Soon-kuk ) 한국농공학회 2005 한국농공학회 학술대회초록집 Vol.2005 No.-
This study was conducted to identify the characteristics of non-point pollutants discharge in a small Rural watershed. For this purpose, the typical rural area in Gongju city was selected as a research site. Water quality and water quantity data in the stream and the precipitation of the watershed were analyzed periodically from May 1 to August 31 in 2005. Also, pollutant loads were estimated using these data. As a result, the mean concentrations of BOD, TN and TP in the stream were 3.16, 3.20, 0.236 mg/L rainy season and 0.93, 2.75, 0.058 mg/L in normal survey season respectively. The estimation of non-point pollutants discharge loads were shown that BOD was 5,154.2kg, T-N was 9,164.7kg, T-P was 308.4kg, and SS was 117,163.2kg from July to August. That means above of 90% of non-point pollutants discharge was occurred in rainy season.
SWSI 가뭄지수를 보완한 농촌용수구역 단위의 가뭄 평가
권형중 ( Hyung Joong Kwon ),임혁진 ( Hyuk Jin Lim ),김성준 ( Seong Joon Kim ) 한국지리정보학회 2007 한국지리정보학회지 Vol.10 No.1
본 논문의 목적은 농촌용수구역(안고 및 안서용수구역)에 대하여 보완된 SWSI를 이용하여 농업가뭄을 평가하는 것이다. 농업가뭄을 평가하기 위한 보완된 SWSI의 입력자료는 강수량, 농업용 저수지의 유입 및 저류량을 사용하였다. 강수량 자료는 대상 용수구역에서 가장 가까운 기상청의 천안관측소 자료를 획득하였고 저수지 저수량 자료는 한국농촌공사로부터 획득하였으며 저수지 유입량 자료는 저수지 상류유역에 대하여 SLURP 모형을 이용하여 산정하였다. 1983년부터 2001년까지 SWSI 기반의 농업가뭄을 평가한 결과, 전국적으로 가뭄이 극심하였던 1994년 7월, 1995년 6월, 2001년 5월에 극심한 가뭄을 나타내었으며 이러한 결과를 PDSI와 SWSI와 비교하였다. The purpose of this study is to assess agricultural drought using modified SWSI(Surface Water Supply Index) in Ango and Anseo agricultural district. Precipitation, reservoir inflow and storage data were used for input data of modified SWSI. Precipitation data was obtained from KMA(Korea Meteorological Administration) and reservoir storage data was obtained from KARICO(Korea Agricultural & Rural Infrastructure Corporation) and reservoir inflow data was simulated by SLURP(Simple LUmped Reservoir Parametric). SWSI based agricultural drought index was evaluated for the period of 1983 and 2001. As results, for the drought periods(July-1994, June-1995, May-2001) agricultural drought indices represented extremely drought states. The result was compared with PDSI and SWSI and checked the applicability of the suggested index in our agricultural drought situation.
WMS HEC-1을 이용한 경안천 유역의 경년 수문변화 분석
이준우 ( Lee Jun Woo ),임혁진 ( Lim Hyuk Jin ),이미선 ( Lee Mi Sun ),김성준 ( Kim Seong Joon ) 한국농공학회 2001 한국농공학회 학술대회초록집 Vol.2001 No.-
1. The purpose of this study is to evaluate the hydrologic impact due to temporal land cover changes of Gyueongan-cheon watershed. 2. WMS(Watershed Modeling System) HEC-1 was adopted and the required data such as DEM(Digital Elevation Model), stream network, soil map were prepared, and land cover map was made by using Landsat TM data. 3. Due to the increase of urban area and paddy field, the runoff ratio increased 5.8% during the past decade.
NOAA/AVHRR 위성영상을 이용한 한반도 증발산량 산정
권형중 ( Kwon Hyung Joong ),임혁진 ( Lim Hyuk Jin ),신사철 ( Shin Sha Chul ),김성준 ( Kim Seong Joon ) 한국농공학회 2003 한국농공학회 학술대회초록집 Vol.2003 No.-
The purpose of this study is to estimate monthly evapotranspiration (ET) using normalized difference vegetation index (NDVI) from NOAA/ A VHRR Korea peninsula images. Morton actual ET for land surface conditions was evaluated by using 73 daily meteorological data, and the monthly averaged Morton ETs for each land cover were compared with the monthly maximum NDVIs of a year, 2001. There was a high correlation between monthly maximum NDVI and monthly averaged Morton ET. It was concluded that the monthly ET can be estimated from the NDVI information of NOAA/AVHRR.