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人工クラゲにより観測された東シナ海海底流について (1)
https://fra.repo.nii.ac.jp/records/2003379
https://fra.repo.nii.ac.jp/records/20033797a42a2e5-7d21-4547-ad07-717059ba8d79
| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2024-04-25 | |||||
| タイトル | ||||||
| タイトル | 人工クラゲにより観測された東シナ海海底流について (1) | |||||
| 言語 | ja | |||||
| タイトル | ||||||
| タイトル | ON BOTTOM CURRENTS IN THE EAST CHINA SEA MEASURED WITH SEA -BED DRIFTERS - I | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | departmental bulletin paper | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
川合, 英夫
× 川合, 英夫× 坂本, 久雄 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | With the sea-bed drifters (Fig. 1) as used by U. S. scientists, an investigation on bottom currents in the East China Sea, the area of the continental shelf in the sea including that in the Yellow Sea being about 106 km2, was made. The sinking speed of a bunch of five drifters, weighted with two, salt spools which quickly sink the drifters to the bottom, is about 7 m per minuite immediately after the release. The 1788 drifters were released on board three research vessels at nine stations 140 to 200 nautical miles NW or NNW of the Amami Oshima Island on August 2-3, 1968 (Table 1, upper and Fig. 3). The bottom depths at the nine stations are between 95 and 130 m (Table 1). In twelve months, 93 sea-bed drifters have been recovered from the bottom by fishermen, and a drifter without the copper ferrule has been stranded on the shore of the Tsushima Island. The rate of recovery at the bottom has been 5.2%. The recovery position has commonly an error of about five nautical miles at most, which corresponds to the mean distance between positions of lowering and heaving of a bottom trawling net. Some of reports on the positions with too wide distance seem to be erroneous as shown in Figs. 3 and 4. Neverthless, most of recovery positions are distributed in an envelope stretching northward nearly along the 100 m contour and bending loosely northwestward afterwards (Fig. 3). Comparing the results with the intensity of bottom trawling by Japanese fishing-boats (Fig. 2), the envelope seems to be an indication of bottom current. The drift speed assuming a straight trajectory between release and recovery positions is roughly between 0.5 and 1.5 nautical miles per day (Fig. 4). | |||||
| 言語 | en | |||||
| bibliographic_information |
ja : 南西海区水産研究所研究報告 en : Bulletin of the Nansei Regional Fisheries Research Laboratory 巻 2, p. 39-48, ページ数 10, 発行日 1969-11 |
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| 出版者 | ||||||
| 出版者 | 南西海区水産研究所 | |||||
| 言語 | ja | |||||
| 出版者 | ||||||
| 出版者 | Nansei Regional Fisheries Research Laboratory | |||||
| 言語 | en | |||||
| item_10002_source_id_9 | ||||||
| 収録物識別子タイプ | PISSN | |||||
| 収録物識別子 | 0388-841X | |||||
| item_10002_source_id_11 | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AN00181988 | |||||
| 情報源 | ||||||
| 識別子タイプ | Local | |||||
| 関連識別子 | nnf_k_2_39 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://agriknowledge.affrc.go.jp/RN/2010841383 | |||||
| 言語 | ja | |||||
| 関連名称 | 日本農学文献記事索引(agriknowledge) | |||||
