| 摘要: |
| 介绍一种适用于各种船只的海水叶绿素含量连续走航自动测定系统，它包括海水取样、荧光测量、数据采集和数据处理单元。这一系统已用于1994年在东海的两个航次的考察。数据采取的间隔可根据研究项目的需要确定，在东海的考察中，确定的间隔为1s，实际是每0.1s取一个数据，记录每秒间隔内的平均值，共获得60万个观测值，得出的平面分布与传统的站位上采水样观测结果的总趋势一致，但走航观测的结果更详细，包括从几十米至十几公里各种尺度的叶绿素α含量的空间分布变化。因此这一系统为在各种尺度（从米级到船只的最大航程）上研究叶绿素的分布提供了一种有效手段。由于是自动连续测定、测定结果自动记录和存储。数据可以直接用于计算或制图。给出了用这一系统测定的东海表层水叶绿素α的平面分布图。 |
| 关键词: 叶绿素α 走航测定 |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金资助项目，49276265号 |
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| CONTINUOUS FLOW MEASUREMENT OF CHLOROPHYLL α CONCENTRATION IN THE SEA |
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Wang Rong1, Lu Beiwei1, Yu Jiadong2
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1.Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071;2.Department of environment, University of Qingdao, Qingdao 266071
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| Abstract: |
| This paper presents a newly developed system of continuous flow measurement of near-surface chlorophyll concentration in the sea, which can be used in a variety of ships. It consists of a water sampling unit, fluorescence measuring unit, data collecting unit, and data processing unit. The system was successfully employed during two cruises in the East China Sea in 1994 and showed the advantages in overcoming the insufficient sampling by stationary observation. The time interval of data recording can be set arbitrarily according to the purpose of the research. For our study the setting was one second. In fact the system took measurement every 0.1 second but recorded the average of all measurements during one second. This system provides a useful approach to study the chlorophyll distribution on a variety of spatial scales, from meters to the ship’s maximum range. The data automatically measured and recorded can be directly used for further processing. Samples are given to show the distribution patterns of near-surface chlorophyll a distribution and patchiness on transects. |
| Key words: Chlorophyll, Continuous flow measurement |
