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김홍태,신현석,Kim,Hong-Tae,Shin,Hyun-Suk 한국방재학회 2009 한국방재학회논문집 Vol.9 No.1
본 연구는 비선형 단위도인 지형형태-기후학적 단위도(GCUH)와 하도추적을 포함한 GIS기반 지형수문유역모의 모형 (<TEX>$G^{2}WMS$</TEX>)을 개발하고 실강우사상과 계측 산악유역에 적용함으로써 미계측 산악유역의 적용가능성을 검토하는 것이다. 대상유역을 소유역은 설마천, 중유역은 안동댐 유역으로 선정하여 실측단위도 비교, 실측홍수사상 비교를 단일유역과 분할유역으로 구분하여 검정 및 분석에 이용하였다. 결과적으로, 중유역 안동댐은 비선형 GCUH기법과 하도추적이 적용된 분할유역이 선형 전통적기법만 적용된 단일유역보다 산악유역 강우-유출 특성을 잘 반영함을 확인하였다. In this study, we developed the GIS-based Geomorpho-hydrological Watershed Modeling System(<TEX>$G^{2}WMS$</TEX>) which could consider both nonlilear rainfall-runoff relationship based on Geomorpho-Climatic Unit Hydrograph(GCUH) as well as watershed system inducing river routing. The developed new model was calibrated at the gaged rainfall events at natural watersheds and previewed to apply at the ungaged mountain basins, such as Sulma basin for small mountain basin and Andong-Dam basin for large scale basin, compared single with partitioned basin in the observed unit hydrographs and rainfall-discharge events. Finally, at the large scale Andong dam basin, we concluded that partitioned basin cases which including th nonlinear GCUH and river routing methods were superior to single basins which including the traditional methods in rainfall-discharge simulation at the mountain basins.
김홍태,신동석,김용석,Kim, Hong Tae,Shin, Dong Seok,Kim, Yong Seok 한국농공학회 2014 한국농공학회논문집 Vol.56 No.6
Vulnerable areas by non-point source pollution and prioritizing control areas were researched using hydrological and geomorphological data, non-point source loads, and water quality data. Using overlay analysis, vulnerable areas were graded with various scenarios. Vulnerable areas were selected near the metro city with impermeable landuse because non-point source loads and water quality data had influence on overlay analysis to rank vulnerable area. Analysis scenarios and weighted values can be changed under regional characteristics and given conditions.
인적 요인을 중심으로 한 해양사고 분석 및 예방 연구 (예부선 사고사례를 중심으로)
김홍태,나성,Kim, Hong-Tae,Na, Sung 선박안전기술공단 2009 선박안전 Vol.27 No.-
Despite the development of the various navigational equipment, such as GPS, ARPA, ECDIS, AIS, VDR, and hull monitoring system, marine accidents are still a leading concern in shipping industry. For all accidents over the reporting period, approximately 60 to 80% of the accidents was involved in human error. It means that in each case, some events which were associated with human error initiated an accident, and those failures of human performance led to the failure to avoid an accident or mitigate it's consequences. However, the improvement and the effort on the maritime human error are still limited in an elementary step. The objective of this paper is to propose a modified Human Factors Analysis and Classification System (HFACS) model in order to analyse the collision accidents of tug-barge ship.