SOMLIT-like Lanvéoc time series (French Research Infrastructure ILICO): long-term core parameter monitoring in Bay of Brest

the somlit-like -lanvéoc time series data characterize the hydrology of the bay of brest, at 48°17'39"n - 04°27'09"w location. the bay of brest is a semi-enclosed, macro-tidal, marine ecosystem of 180 km2, connected to the iroise sea by a narrow and deep strait of 2 km width, and 40 m depth max. it is under the influence of the aulne river, representing 70% of the total river discharge. fortnightly measurements have been undertaken since january 2019 by the iuem/ubo/cnrs-lemar to detect the long-term evolution of hydrology in the land-sea continuum including natural and anthropogenic forcings. the data from the lanvéoc station are collected according to protocols established by the french monitoring network somlit (https://www.somlit.fr/), accredited by the cnrs as a national earth science observatory (ilico, https://www.ir-ilico.fr). the lanvéoc station is upstream of the somlit-portzic observatory station (10.17882/91173). at the time of writing, the process of requesting somlit accreditation for lanvéoc station is underway. somlit-like-lanvéoc samples are collected at 1m depth of a 10 m water column, at high neap tide (7m tidal range), near slack water. samples collected are analysed for more than 20 core parameters: sea surface temperature (sst), sea surface salinity (sss), dissolved oxygen (o2), ph, ammonia, nitrates, nitrites, phosphates, silicates, suspended matter, particulate organic carbone, particulate organic nitrogen, chlorophyll a, delta15n, delta13c; pico- and nano- plankton; ctd-par-profile. the microphytoplankton is simultaneously identified in accordance with the national phytobs-network’s (https://www.phytobs.fr/) protocols. complementary parameters are also measured for specific research studies: biogenic silica at 1m depth and the microphytobenthos and high frequency ctdo2fluo-measurements at sediment-water interface. the somlit-like-lanvéoc time series data are collected in compliance with the somlit network quality management system, in line with the kso/iec 17025:2017 standard: “general requirements for the competence of testing and calibration laboratories”. further information on standard operating procedures for sample collection and data acquisition are available at: https://www.somlit.fr/parametres-et-protocoles. for more information on the quality flagging scheme: https://www.somlit.fr/codes-qualite/.

本数据集描述了类似 SOMLIT 的 LANVÉOC 时间序列数据，这些数据表征了布列斯特湾的水文特征，该湾位于北纬 48°17'39"西经 04°27'09"的地理位置。布列斯特湾是一个半封闭、巨潮汐的海洋生态系统，面积为 180 平方公里，通过宽度为 2 公里、最大深度为 40 米的狭窄而深邃的海峡与伊罗伊斯海相连，并受到奥卢恩河的影响，该河占总河流径流的 70%。自 2019 年 1 月以来，由 IUEM/UBO/CNRS-LEMAR 进行了为期两周的测量，以监测陆地-海洋连续体中水文特征的长期演变，包括自然和人为的驱动力。LANVÉOC 站点的数据收集遵循法国监测网络 SOMLIT（https://www.somlit.fr/）制定的协议，该网络经法国国家科学研究中心（CNRS）认证为国家地球科学观测站（ILICO，https://www.ir-ilico.fr）。LANVÉOC 站点位于 SOMLIT-PORTZIC 观测站上游（10.17882/91173）。截至本文撰写之时，LANVÉOC 站点申请 SOMLIT 认证的过程正在进行中。SOMLIT-like-LANVÉOC 样本在高潮潮位（潮差 7 米）的 10 米水柱中的 1 米深度处采集，靠近平潮。采集的样本被分析超过 20 个核心参数：海面温度（SST）、海面盐度（SSS）、溶解氧（O2）、pH 值、氨、硝酸盐、亚硝酸盐、磷酸盐、硅酸盐、悬浮物质、颗粒有机碳、颗粒有机氮、叶绿素 a、δ15N、δ13C；浮游生物；CTD-Par 配置文件。同时，根据国家植物观测网络（https://www.phytobs.fr/）的协议，对微型浮游植物进行鉴定。针对特定的研究项目，还测量了补充参数：生物硅在 1 米深度处的含量，以及沉积物-水界面的微型底栖植物和高频 CTD-O2-Fluo 测量。SOMLIT-like-LANVÉOC 时间序列数据的收集符合 SOMLIT 网络质量管理体系，并与 ISO/IEC 17025:2017 标准：“测试和校准实验室的通用要求”保持一致。有关样本收集和数据获取的标准操作程序详细信息，请参阅：https://www.somlit.fr/parametres-et-protocoles。有关质量标志方案的信息，请参阅：https://www.somlit.fr/codes-qualite/。