Key Technologies for Floating Type Artificial Upwelling System to Strengthen Primary Production

doi:2012.26.1.78

J. Ocean Eng. Technol. > Volume 26(1); 2012 > Article

J. Ocean Eng. Technol. 2012;26(1):78-83.
DOI: https://doi.org/10.5574/KSOE.2012.26.1.078

Jung Dong-Ho,Lee Ho-Saeng,Kim Hyeon-Ju,Moon Deok-Soo,Lee Seung-Won

Deep Ocean Water Application Research Center Marine Structure&Plant research department Daejeon branches KORDI,Deep Ocean Water Application Research Center Marine Structure&Plant research department Daejeon branches KORDI,Deep Ocean Water Applicatio

해역 기초생산력 증대를 위한 부유식 인공용승시스템 요소기술

정동호,이호생,김현주,문덕수,이승원

한국해양연구원 대전분원 해양구조물.플랜트연구부 해양심층수연구센터,한국해양연구원 대전분원 해양구조물.플랜트연구부 해양심층수연구센터,한국해양연구원 대전분원 해양구조물.플랜트연구부 해양심층수연구센터,한국해양연구원 대전분원 해양구조물.플랜트연구부 해양심층수연구센터,한국해양연구원 대전분원 해양구조물.플랜트연구부 해양심층수연구센터

Keywords: Primary production, Artificial upwelling system in floating type, Deep seawater, Fisheries resource

핵심용어: 기초생산, 부유식 인공용승시스템, 해양심층수, 어족자원

Abstract

The abundant nutrients contained in deep seawater are delivered by natural upwellings from the deep sea to the surface sea. However, the natural upwelling phenomenon is limited to specific areas of the sea; in other areas, the thermocline separates the surface sea from the lower layer. Thus, the surface layer is often deficient in nutritive salts, causing the deterioration of its primary productivity and ultimately leading to an imbalance in the marine ecosystem. Without a consistent supply of nitrogenous nutritive salts, they are absorbed by phytoplankton, resulting in a considerable problem in primary productivity. To solve this issue, a floating type of artificial upwelling system is suggested to artificially pump up, distribute, and diffuse deep seawater containing rich nutritive salts. The key technologies for developing such a floating artificial upwelling system are a floating offshore structure with a large diameter riser, self-supplying energy system, density current generating system, method for estimating the emission and absorption of CO2, and way to evaluate the primary production variation. Strengthening the primary production of the sea by supplying deep seawater to the sea surface will result in a sea environment with abundant fishery resources.