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Recent Changes of Mixed Layer Depth in the East/Japan Sea: 1994-2007
장필훈,조춘호,류상범 한국기상학회 2011 Asia-Pacific Journal of Atmospheric Sciences Vol.47 No.5
Recent changes of Mixed Layer Depth (MLD) in the East/Japan Sea (EJS) is investigated by using ocean reanalysis data. There is a significant shoaling of MLD in the southern EJS for 1994-2007,showing the change rate of - 1.24 m yr^(−1). The present study demonstrates that the wind stress curl mostly attributes to the MLD changes. The long-term variation of wind stress curl with a positive trend in the southern EJS is generally well consistent with the MLD variation. In addition, upward displacement estimated from the wind stress curl reaches 14.6 m during 14 years, which is comparable to the shoaling of MLD (i.e., 17.4 m). Thus, the wind stress curl with positive trend would induce the increase of upward Ekman pumping which in turn lead to the shoaling of MLD. The change of temperature structure in the subsurface layer, that is shrinking and upward displacement of thermal layer from the reanalysis and observational data, also supports this conclusion.
장필훈,최석철,Jang, Pil-Hoon,Choi, Seok-Cheol 한국국방경영분석학회 2008 한국국방경영분석학회지 Vol.34 No.1
본 연구에서는 외국의 국방표준화 정보관리 발전동향을 살펴보고 우리나라 현 실태를 분석한 후 민수-국방분야에 공통 적용가능한 규격/표준 공통 분류목록의 제정과 이를 바탕으로 한 표준화 정보기반 통합DB의 구축 및 국방표준화 정보체계의 구축방안을 제시하였다. 규격/표준 공통 분류목록은 국방규격과 한국산업표준의 그룹핑을 통해 표준화 대상식별에 관한 보다 효과적인 방법을 제시하였으며, 표준화 정보기반 통합DB 구축을 통해 규격/표준과 다양한 정보들과의 상호참조 기반을 제공하였고, 표준화 정보체계를 통해 민수-국방분야 전반에 걸친 규격/표준정보 활용의 토대를 제시하였다. In this study, the establishment strategies of Military Standardization Information System and Integrated Database(DB) based on standardization information are provided. The establishment strategies introduced here are based on the appliable common(commercial and military) classification of specifications/standards. The common(commercial and military) classification of specifications/standards adapted in this study can be constructed through mapping by 'grouping' between the MS(Military Specification/Standards) and KS(Korean industry Standards) to increase efficiency. In detail, the establishment of Integrated Database(DB) based on standardization information provides the various channel of interactive communication among specifications/standards. Additionally, standardization information systems provide the basis of the integrated specifications/standards converged between the commercial and military sector.