SRTM DEM을 이용한 격자기반 강우-유출모의

정인균 ( In Kyun Jung ),박종윤 ( Jong Yoon Park ),박민지 ( Min Ji Park ),신형진 ( Hyung Jin Shin ),정현교 ( Hyeon Gyo Jeong ),김성준 ( Seong Joon Kim ) 한국지리정보학회 2010 한국지리정보학회지 Vol.13 No.4

In this study, the applicability of SRTM(The Shuttle Radar Topography Mission) DEM(Digital Elevation Model) which is one of the remotely sensed shuttle`s radar digital elevation was tested for use as the input data in a grid-based rainfall-runoff model. The SRTM DEM and digital topographic map derived DEM(TOPO DEM) were building with 500m spatial resolution for the Chungju-Dam watershed which located in the middle east of South Korea, and stream-burning method was applied to delineate the proper flow direction for model application. Similar topographical characteristics were shown as a result of comparing elevation, flow-direction, hydrological slope, number of watershed cell, and profile between SRTM DEM and TOPO DEM. Two DEMs were tested by using a grid-based rainfall-runoff model named KIMSTORM with 6 storm events. The results also showed no significant differences in average values of relative error for both peak runoff(0.91 %) and total runoff volume(0.29 %). The results showed that the SRTM DEM has applicability like TOPO DEM for use in a grid-based rainfall-runoff modeling.

부식제에 의한 상부 소화관 손상에 대한 내시경적 연속추적검사에 관한 고찰

박충기(Choong Kee Park),김학양(Hak Yang Kim),신호균(Ho Kyun shin),정인구(In Goo Jung),전성국(Sung Gook Jun),유재영(Jae Young Yu) 대한소화기학회 1990 대한소화기학회지 Vol.22 No.2

The ingestion of caustic agents can initiate a progressive and devastating injury to the esophagus and stomach. Since the introduction of concentrated alkaline cleansers in the 1960s, the incidence of seveve injury has increased. If the patient survives the acute effects of caustic ingestion, the reparative response can result in esophageal and gastric stenosis and an increased incidence of esophageal cancer. There are little reports in the case of the strong acid was ingested, and especially no reports about the periodic gastrofiberscopic examination. We have done the periodic gastrofiberscopic examination every a week for four times to whom ingested the caustic agents. The results obtained were as follows: 1) Male to female ratio was 7:6. The mean age was 33.6 years. (range: 18 to 59) 2) Amount of acid ingested was about 30 to 100 cc. 3) The motive of ingestion was accidental in 2 patients, suicidal attempt in 11 patients, and 4 patients of whom was major depression patients. 4) Patients with ulcer had more severe and many symptoms than patients with gastritis and esophagitis. 5) Of the 13 patients, stricture developed in 5 patients, esophageal stricture in 3 patients, and gastric antral stricture in 2 patients. 6) The esophageal injury was more severe than the gastric injury, probably that is due to ingestion of highly concentrated acid. 7) In 3 patients, serial fiberoptic gastroscopy demonstrated nodular regeneration at 2 weeks after ingesting caustics, esophageal or gastric antral stricture 3 or 4 weeks later. 8) In 5 patients with stricture, 4 patients required operation. Remaining patients without stricture were treated conservatively with antacid or H2 antagonist without subsequent complication.9) None of 13 patients expired. 10) 9 patients had followed-up from 3 months to 15 months after ingestion, 8 patients of whom were free of symptoms, only 1 patient persisted anorexia and dysphagia.

Landsat TM 영상을 이용한 논지역 내 비닐하우스 면적 추정

정인균,박근애,장철희,김성준,Jung In-Kyun,Park Geun-Ae,Jang Cheol-Hee,Kim Seong-Joon 한국관개배수위원회 2001 한국관개배수논문집 Vol.8 No.2

A plenty of wastes by greenhouse cultivation affect soil and water pollution much more than those by rice cultivation in paddy field. The greenhouse on paddy field has been increased dramatically, however their physical information such as the location an

효과적인 유역 및 하도망 추출을 위한 DEM전처리 방법의 비교

정인균(Jung In-Kyun),김성준(Kim Seong-Joon) 대한토목학회 2003 대한토목학회논문집 D Vol.23 No.3D

공간해상도에 따른 유역평균 SCS-CN값 변화에 관한 연구

정인균(Jung In-Kyun),장은미(Chang Eun-Mi) 대한공간정보학회 2004 한국지형공간정보학회 학술대회 Vol.2004 No.3

웹기반 홍수관리시스템 구현을 위한 홍수분석모듈개발

정인균,박종윤,김성준,장철희,Jung, In Kyun,Park, Jong Yoon,Kim, Seong Joon,Jang, Cheol Hee 한국농공학회 2014 한국농공학회논문집 Vol.56 No.6

This study was to develop the flood analysis module (FAM) for implementation of a web-based real-time agricultural flood management system. The FAM was developed to apply for an individual watershed, including agricultural reservoir. This module calculates the flood inflow hydrograph to the reservoir using effective rainfall by NRCS-CN method and unit hydrograph calculated by Clark, SCS, and Nakayasu synthetic unit hydrograph methods, and then perform the reservoir routing by modified Puls method. It was programmed to consider the automatic reservoir operation method (AutoROM) based on flood control water level of reservoir. For a $15.7km^2$ Gyeryong watershed including $472{\times}10^4m^3$ agricultural reservoir, rainfall loss, rainfall excess, peak inflow, total inflow, maximum discharge, and maximum water level for each duration time were compared between the FAM and HEC-HMS (applied SCS and Clark unit hydrograph methods). The FAM results showed entirely consistent for all components with simulated results by HEC-HMS. It means that the applied methods to the FAM were implemented properly.

웹기반 농촌홍수관리시스템 개발 방안 연구

정인균 ( Jung In Kyun ),김성준 ( Kim Seong Joon ),김대식 ( Kim Dae Sik ),고광돈 ( Ko Kwang Don ),이금준 ( Lee Geum Jun ) 한국농공학회 2008 한국농공학회 학술대회초록집 Vol.2008 No.-

The flood risk and property damage has increased in rural areas due to the increased frequency and intensity of heavy rainfall event. The 3,320 agricultural reservoirs, which has been managed by KRC (Korea Rural Community & Agriculture Corporation), are distributed over the rural area. However, only a few of the agricultural reservoirs have flood control capability. Thus it is necessary to develop a flood monitoring and management system for the KRC reservoirs during the storm periods. This study suggests the conceptual idea for the development of web-based flood control and monitoring system of agricultural reservoirs which will be managed by KRC in the future.

효과적인 유역자료 추출을 위한 DEM 전처리 방법의 비교

정인균 ( Jung In-kyun ),김성준 ( Kim Seong-joon ) 한국농공학회 2002 한국농공학회 학술대회초록집 Vol.2002 No.-

Watershed boundary and stream network can be extracted from DEM(Digital Elevation Model) using GIS software such as ARC/INFO or ArcView Spatial Analyst. However, there exist many errors in the generated watershed boundary and stream network just by operating sink removal function of the present software. This paper present the error reducing method to delineate watershed boundary and generate stream network especially in plane areas by using stream burning techniques known as Fillburn and Agree bum. These preprocessing techniques of DEM dramatically decreased the errors comparing with the results by no-bum DEM.

격자기반 운동파 강우유출모형 KIMSTORM의 개선(II) - 적용 및 분석 -

정인균,신형진,박진혁,김성준,Jung, In Kyun,Shin, Hyung Jin,Park, Jin Hyeog,Kim, Seong Joon 대한토목학회 2008 대한토목학회논문집 B Vol.28 No.6B

본 연구에서는 격자기반 운동파 강우유출모형 KIMSTORM을 개선한 ModKIMSTORM을 유역면적 $2,293km^2$의 남강댐 유역을 대상으로 적용성을 검토하였다. 공간해상도 500 m의 GIS 입력자료(DEM, 토지피복도, 유효토심도, 토양종류도 등)를 구축하였으며, 5개 태풍(2000년 사오마이, 2002년 루사, 2003년 매미, 2004년 메기, 2006년 에위니아) 및 2개 강우사상 (2003년 5월, 2004년 7월)을 적용하여 모형을 검보정하였다. 모형의 자동평가 기능을 이용하여 모의유량을 실측유량과 비교하였으며, 유역의 출구지점에 대한 매개변수 보정결과 결정계수($R^2$), 모형효율(E), 유출용적편차($D_v$), 첨두유량의 상대오차 ($EQ_p$), 첨두시간의 절대오차($ET_p$)의 평균은 각각 0.984, 0.981, 3.63%, 0.003, 0.48 hr로, 검정에서는 $R^2$, E, $D_v$, $EQ_p$, $ET_p$의 평균이 각각 0.937, 0.895, 8.08%, 0.138, 0.73 hr로 분석되었다. 매개변수와 관련하여 초기토양수분함량이 유출용적에 민감하였고, 하천조도계수가 첨두유량에 가장 민감한 변수로 나타났다. 호우기간동안의 공간적인 결과로부터 수문학적 요소의 작용을 살펴봄으로써 호우시 유역관리에 대한 정보를 얻을 수 있었다. This paper is to test the applicability of ModKIMSTORM (Modified KIneMatic Wave STOrm Runoff Model) by applying it to Namgangdam watershed of $2,293km^2$. Model inputs (DEM, land use, soil related information) were prepared in 500 m spatial resolution. Using five typhoon events (Saomi in 2000, Rusa in 2002, Maemi in 2003, Megi in 2004 and Ewiniar in 2006) and two storm events (May of 2003 and July of 2004), the model was calibrated and verified by comparing the simulated streamflow with the observed one at the outlet of the watershed. The Pearson's coefficient of determination $R^2$, Nash and Sutcliffe model efficiency E, the deviation of runoff volumes $D_v$, relative error of the peak runoff rate $EQ_p$, and absolute error of the time to peak runoff $ET_p$ showed the average value of 0.984, 0.981, 3.63%, 0.003, and 0.48 hr for 4 storms calibration and 0.937, 0.895, 8.08%, 0.138, and 0.73 hr for 3 storms verification respectively. Among the model parameters, the stream Manning's roughness coefficient was the most sensitive for peak runoff and the initial soil moisture content was highly sensitive for runoff volume fitting. We could look into the behavior of hyrologic components from the spatial results during the storm periods and get some clue for the watershed management by storms.

격자기반 운동파 강우유출모형 KIMSTORM의 개선(Ⅰ) : 이론 및 모형

정인균(Jung In Kyun),이미선(Lee Mi Seon),박종윤(Park Jong Yoon),김성준(Kim Seong Joon) 대한토목학회 2008 대한토목학회논문집 B Vol.28 No.6B

격자기반 운동파 강우유출모형 KIMSTORM(grid-based KIneMatic wave STOrm Runoff Model)은 유역의 지표흐름, 지표하흐름 및 하천흐름의 시간적 변화와 공간적 분포를 모의할 수 있다. 본 모형은 유닉스 운영체제의 C++언어로 개발되었으며, 각 셀에서의 흐름을 모의하기 위하여 단방향흐름 알고리즘과 격자기반 수문학적 물수지요소를 채택하고 있으나 운영에 몇몇 제약사항이 있다. 본 연구에서는 기존모형을 개선하고자 하였으며, MS Windows 운영체제에서 실행 가능하도록 FORTRAN 90 언어를 이용하여 ModKIMSTORM을 개발하였다. 기존모형에 비해 개선된 주요사항으로, 물리적 기반의 침투기법인 GAML(Green-Ampt & Mein-Larson) 침투모형 추가, 격자 유출심과 Manning 조도계수에 의한 논에서의 지표유출 제어, 지표격자의 기저유출 요소 추가, 공간강우와 지점강우의 처리, 전ㆍ후 처리부문 개발, 5개 평가항목(피어슨의 결정계수 R², Nash & Sutcliffe 모형효율 E, 유출용적 편차 D<SUB>v</SUB>, 첨두유출의 상대오차 EQ<SUB>p</SUB>, 첨두시간의 절대오차 ET<SUB>p</SUB>)을 이용한 모의결과의 자동평가 기능을 개발하였다. 추가적으로, 모형의 계산효율을 향상시키고 지표격자의 기저유출을 하천격자로 이송하기 위하여 쉘정렬 알고리즘을 채택하였다. 모형의 입력자료는 ESRI ArcInfo W/S 또는 ArcView와 같은 GIS 소프트웨어 및 MS Excel을 이용하여 간단히 구축할 수 있으며, 모의결과의 공간적 분포를 확인할 수 있는 토양수분, 지표유출, 유출심 및 유속분포도는 BSQ, ESRI ASCII Grid, ESRI Binary Grid 및 IDRISI Raster 형식으로 출력할 수 있도록 개선하였다. The grid-based KIneMatic wave STOrm Runoff Model (KIMSTORM) by Kim (1998) predicts the temporal variation and spatial distribution of overland flow, subsurface flow and stream flow in a watershed. The model programmed with C++ language on Unix operating system adopts single flowpath algorithm for water balance simulation of flow at each grid element. In this study, we attempted to improve the model by converting the code into FORTRAN 90 on MS Windows operating system and named as ModKIMSTORM. The improved functions are the addition of GAML (Green-Ampt & Mein-Larson) infiltration model, control of paddy runoff rate by flow depth and Manning's roughness coefficient, addition of baseflow layer, treatment of both spatial and point rainfall data, development of the pre- and post-processor, and development of automatic model evaluation function using five evaluation criteria (Pearson's coefficient of determination, Nash and Sutcliffe model efficiency, the deviation of runoff volume, relative error of the peak runoff rate, and absolute error of the time to peak runoff). The modified model adopts Shell Sort algorithm to enhance the computational performance. Input data formats are accepted as raster and MS Excel, and model outputs viz. soil moisture, discharge, flow depth and velocity are generated as BSQ, ASCII grid, binary grid and raster formats.