High frequency monitoring of the coastal marine environment using the MAREL buoy
High frequency monitoring of the coastal marine environment using the MAREL buoy
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DOI：
10.1039/b314073c
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发表时间：
2004-01-01
影响因子：
--
通讯作者：
Vuillemin, R
中科院分区：
文献类型：
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作者：
Blain, S;Guillou, J;Vuillemin, R
MAREL Iroise数据浮标以连续和自主模式提供在海洋表层水中获得的物理化学测量结果。水从水面以下1.5 m处通过取样管泵入，并流经位于浮式结构中的测量池。在浮标顶部的测量单元内实施的技术创新允许对传感器进行连续清洁，同时将氯离子注入回路中防止生物污染。本文研究的温度，盐度，氧气和荧光的特定传感器已被评估，以保证测量精度超过3个月。互联网TCP-IP协议下的双向链路用于与陆基数据中心的数据、警报和远程控制传输。在这里，我们提出了一个29个月的记录，4个参数测量使用MAREL浮标停泊在沿海环境（Iroise海，布雷斯特，法国）。浮标提供的数据的准确性是通过与作为法国沿海环境监测网络SOMLIT（Service d 'Observation du Milieu文学的）一部分的同一地点每周取样的海水测量值进行比较来评估的。一些特殊的事件（密集的淡水排放的影响，快速浮游植物水华的动态）也被提出，展示了一个高频率的连续可靠的系统监测高度可变的环境的价值。
The MAREL Iroise data buoy provides physico-chemical measurements acquired in surface marine water in continuous and autonomous mode. The water is pumped 1.5 m from below the surface through a sampling pipe and flows through the measuring cell located in the floating structure. Technological innovations implemented inside the measuring cell atop the buoy allow a continuous cleaning of the sensor, while injection of chloride ions into the circuit prevents biological fouling. Specific sensors for temperature, salinity, oxygen and fluorescence investigated in this paper have been evaluated to guarantee measurement precision over a 3 month period. A bi-directional link under Internet TCP-IP protocols is used for data, alarms and remote-control transmissions with the land-based data centre. Herein, we present a 29 month record for 4 parameters measured using a MAREL buoy moored in a coastal environment (Iroise Sea, Brest, France). The accuracy of the data provided by the buoy is assessed by comparison with measurements of sea water weekly sampled at the same site as part of SOMLIT (Service d'Observation du Milieu LIToral), the French network for monitoring of the coastal environment. Some particular events (impact of intensive fresh water discharges, dynamics of a fast phytoplankton bloom) are also presented, demonstrating the worth of monitoring a highly variable environment with a high frequency continuous reliable system.