コバルト·リッチ·マンガン鉱床のグラビテイコアリング
書誌事項
- タイトル別名
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- Gravity Coring for Cobalt Rich Manganese Deposits
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説明
Cobalt rich manganese deposits (CRMD) are frequently discovered on tops and slopes of seamounts in the depths of 800-2,500 m in the equatorial regions of the Pacific Ocean. Because the wireline dredge bucket sampling is not effective to collect crust type samples and to detect buried deposits, the authors have developed a new type gravity corer with a stainless steel core barrel of large bore. A bottom contact camera is also installed as a trigger weight. In the practical uses, the size of the corer is 6 m of total length and 510 kg of total weight. The corer should be dropped freely form a height of 3-6 m above sea bottom. The authors carried out 21 trials on Seamount A, B and C. Results in the experiments were satisfactory. The bottom photos were useful for the recognition of sampling conditions. Maximum thickness of the sampled crust layers was 8 cm. And buried crusts were detected at three locations. In the paper, an outline of the results and some problems are described.
収録刊行物
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- 海洋調査技術
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海洋調査技術 5 (1), 1_1-1_11, 1993
海洋調査技術学会
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詳細情報 詳細情報について
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- CRID
- 1390001204339499648
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- NII論文ID
- 130004555958
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- ISSN
- 21854920
- 09152997
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可