Development of acoustic vertical zooplankton profiling system

声学垂直浮游动物剖面系统的开发

• 批准号: 04556026
• 负责人: KIMURA Shingo
• 金额: $ 2.37万
• 依托单位: University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (B)
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1993
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-04556026/
• 关键词: zooplankton; ADCP; acoustic; mooring; secondary production

A equipment and theory of vertical zooplankton profiling system were developed. This system can observe abundance of zooplankton distributed vertically 150 m depth and horizontally 2-3 km using acoustic scattering intensity with 1 hour interval.The system was deployed in the lee of a island to confirm the ability of the system through a estimation of biological productivity in a eddy produced by the island and the Kuroshio. As the results, the system observed that zooplankton abundance gradually increased and suggested that its term well agreed with appearing periods of the eddy theoretically. This is a first time to be able to observe fluctuations of zooplankton with such small time-scale interval quantitatively. Therefore, this observing system using sound seems to be useful to describe interactions between primary production and secondary production in the ocean. Using this system, biological fluctuation in the ocean will be observed with the same time-scale as physical fluctuation and studies on the biological change associated with environmental change is expected to be well advanced.

研制了一套浮游动物垂直剖面系统的装置和原理。该系统能以1小时为间隔，利用声学散射强度观测浮游动物的数量，垂直方向150 m，水平方向2~3 km，通过对海岛和黑潮产生的涡旋中生物生产力的估计，确定系统的能力。结果表明，该系统观测到浮游动物的丰度逐渐增加，表明其项与涡旋的出现周期在理论上是一致的。这是第一次能够以如此小的时间尺度间隔定量观察浮游动物的波动。因此，这种使用声音的观测系统似乎有助于描述海洋初级生产和次生生产之间的相互作用。使用该系统，将以与物理波动相同的时间尺度观测海洋中的生物波动，并有望推动与环境变化相关的生物变化的研究。

项目成果

Shingo Kimura: "Biological productivity by eddies in the lee of islands" Journal of Oceanography.

Shingo Kimura：“岛屿背风处涡流的生物生产力”海洋学杂志。

Shingo Kimura: "Characteristics of the eddy coused by IZu-Oshima Island and the Kuroshio branch current in Sagami Bay,Japan" Journal of Oceanography. 50(印刷中). (1994)

Shingo Kimura：“日本相模湾伊豆大岛和黑潮支流引起的涡流特征”，《海洋学杂志》50（出版中）。

Shingo Kimura: "Characteristics of the eddy caused by Izu-Oshima Island and the Kuroshio branch current in Sagami Bay" Japan. Joural of Oceanography. 50(in press). (1994)

Shingo Kimura：“伊豆大岛和相模湾黑潮支流引起的涡流特征”日本。

Shingo Kimura: "Biological productivity by eddies in the lee of islands." Joural of Oceanography. (to be submitted).

Shingo Kimura：“岛屿背风处涡流的生物生产力。”

Shingo Kimura: "Characteristics of the eddy caused by Izu-Oshima Island and the Kuroshio branch current in Sagami Bay,Japan" Journal of Oceanography. 50(印刷中). (1994)

Shingo Kimura：“日本相模湾伊豆大岛和黑潮支流引起的涡流特征”，《海洋学杂志》50（出版中）。