摘要
海底可视技术是一种可以直观地对海底地形地貌、表层沉积物类型、生物群落等进行实时观察的调查手段。本文介绍了海底摄像、电视抓斗、深拖系统和ROV四种海底可视技术,并对海底可视技术在南海北部陆坡天然气水合物勘查中的应用进行阐述。利用海底可视技术,在南海北部陆坡发现了天然气水合物气体“冷泉”喷溢形成的自生碳酸盐岩和活动于天然气水合物冷喷溢口或渗流口周围的菌席、双壳类、管状蠕虫等化能自养生物群,圈定出该陆坡由天然气水合物气体“冷泉”喷溢形成的巨型碳酸盐岩面积达430km2。
By using the sea-floor visualization technique, we can directly observe sea-bottom landforms, surface sediment types and biotic communities in real time. Four kinds of sea-floor visualization technique, namely, sea-floor video, TV-grab, deep tow system and ROV, are introduced in this paper. Great efforts have been devoted to the applications of these techniques in gas hydrate exploration on the northern slope of the South China Sea. Authigenic carbonate rocks that formed by gas hydrate venting and chemoauthotrophic biotic communities such as bacterial mats, bivalves and tube worms that live around gas hydrate vents or percolating outlets have been found on the northern slope of the South China Sea. The distribution area of authigenic carbonate rocks thus formed on this slope is up to 430 km2
出处
《地质通报》
CAS
CSCD
北大核心
2005年第2期185-188,共4页
Geological Bulletin of China
基金
中国地质调查局基础调查项目(GZH2001001)和(GZH200200201)资助
关键词
海底可视技术
天然气水合物
勘探
冷泉
南海北部陆坡
sea-floor visualization technique
gas hydrate
exploration
cold venting
northern slope of the South China Sea
