Academic Journal
表層型メタンハイドレート開発における ROV による 堆積物埋在性メガベントス採集技術の考案.
| Τίτλος: | 表層型メタンハイドレート開発における ROV による 堆積物埋在性メガベントス採集技術の考案. |
|---|---|
| Alternate Title: | Sediment samplers for collecting sediment-intrinsic megabenthos using remotely operated vehicles in surface-type methane hydrate areas. |
| Συγγραφείς: | 石田 洋1 h-ishida@kaiseiken.or.jp, 瀬尾 絵理子2 |
| Πηγή: | Oceanography of Japan / Umi no Kenkyū. 2025, Vol. 34 Issue 6, p177-183. 7p. |
| Θεματικοί όροι: | *Sediment sampling, *Methane hydrates, *Sedimentology, *Remotely piloted vehicles, *Oceanographic observations, *Ecological assessment, *Benthos, *Mollusks |
| Γεωγραφικοί όροι: | Sea of Japan |
| Abstract (English): | To facilitate the development of surface-type methane hydrate resources in the Sea of Japan, we conducted an ocean environmental baseline survey and assessed the current status of megabenthos in the area. Sampling within the target area yielded only the dead shells of deep-sea bivalves with shell lengths of approximately 80 mm; no information on living individuals was obtained. It is believed that both the depth and quantity of the sediment samples collected by the existing samplers were insufficient. Therefore, we designed and fabricated four types of samplers capable of collecting large amounts of sediment through repeated sampling during a single dive of a remotely operated vehicle. The proposed sediment-sampling technique was tested on the deep-sea floor. The samplers successfully repeated the sediment-sampling, with one sampler completing 25 samplings during a single dive. A live bivalve approximately 80 mm in shell length and presumed to be Conchocele sp., was successfully collected. The developed samplers represent a potentially valuable technology for environmental impact assessments associated with deep-sea resource development. [ABSTRACT FROM AUTHOR] |
| Abstract (Japanese): | 表層型メタンハイドレート資源開発では, 環境影響評価の一環として, メガベントスの調 査が行われている。調査海域では, 殻長約 80 mm の深海性二枚貝の死殻は確認されてい るが生貝は採集されていない。この要因として, 堆積物の採集深度と量の不足が考えられ る。本研究では, ROV により, 繰り返し採泥が可能な採集装置を 4 種類考案・試作した。 それらを深海底において試験したところ, 繰り返しの採泥ができ, その内の 1 種類では 25 回の採泥を行い, 殻長約 80 mm のオウナガイ類生貝が採集された。本研究で試作し た採集装置は, 二枚貝など深海の埋在性メガベントス調査・研究に有用になりうることが 示唆された。 [ABSTRACT FROM AUTHOR] |
| Βάση Δεδομένων: | Academic Search Index |
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