지구물리 (Journal of the Korean Geophysical Society)

한국지구물리·물리탐사학회 (Korean Society of Earth and Exploration Geophysicists)
권호 표지

천부지층자료와 심해영상자료를 활용한 망간단괴 분포 특성 연구

Characteristics of Manganese Nodule Distribution Pattern using Sub-bottom Profile and Deep Tow Imaging System Data

  • 발행 : 20060000
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초록

광역적인 망간단괴 분포상과 미세한 지형변화와의 상관관계를 해석하고 발달경향에 대한 규칙성을 지배하는 요인을 규명하는 것은 망간단괴 개발을 위한 채광등급설정에 있어서 가장 중요한 근접해저면 평가기법중의 하나이다. 본 연구에서는 망간단괴 개발을 위해 대한민국이 UN으로부터 할당받은 한국심해연구(Korea Deep Ocean Study, KODOS) 지역에서 획득된 천부지층자료와 예인형 심해영상시스템 자료를 대상으로 망간단괴 성장에 직접적으로 관련된 천부퇴적층의 분포를 파악함으로써 망간단괴의 분포를 고찰하고, 격자형 해저영상자료를 이용하여 미세 지형에서의 망간단괴 발달경향과 분포특성에 대한 공간적 해석을 실시하였다. 최상부 음파투명층의 두께와 총 부존율은 상관성이 거의 없어 보이지만, r형 및 t형 단괴와는 역의 상관관계가 뚜렷하게 나타난다. 연구지역에서 획득된 자료 분석을 통해 부존율, 산출경향, 연속성, 지형요소 등을 대비하였을 때, 4개 요소 간에는 일정한 관련성을 보이는 것으로 나타났다.

Sub-bottom profiler and deep tow imaging system were performed in the KODOS (Korea Deep Ocean Study) area in order to find out controlling factor in nodule formation from the relationship between distribution of Mn nodules and micro-scale topographic change. Although abundance of r- and t- types nodules increase on the seafloor of thin upper transparent layer, no significant correlation was found between the thickness of upper transparent layer and total nodule abundance in the study area. Our results show that distribution pattern of nodule, including abundance, continuity, and facies, can vary with small scale in similar abyssal plain.

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참고문헌

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