Synchronized high-resolution bed-level change and biophysical data from 10 marsh-mudflat sites in northwestern Europe
Synchronized high-resolution bed-level change and biophysical data from 10 marsh-mudflat sites in northwestern Europe
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DOI：
10.5194/essd-13-405-2021
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发表时间：
2021-02-12
影响因子：
11.4
通讯作者：
Bouma, Tjeerd J.
中科院分区：
文献类型：
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作者：
Hu, Zhan;Willemsen, Pim W. J. M.;Bouma, Tjeerd J.
潮滩提供有价值的生态系统服务，如防洪和碳封存。侵蚀和沉积过程控制着潮间带生态系统（沼泽和光秃秃的滩涂）的生态地貌演变，因此对其宝贵的生态系统服务产生重大影响。为了了解潮间带生态系统的发展，需要高频床面变化数据。然而，由于缺乏不涉及过多劳动力和/或昂贵仪器的合适方法，这些数据集是稀缺的。通过应用新开发的地表高程动力学（SED）传感器，我们获得了2013-2017年期间独特的高分辨率日床位变化数据集，这些数据来自荷兰、比利时和英国的10个沼泽-泥滩站点，对比了物理和生物环境。在每个站点，多个传感器部署了9-20个月，以确保高度可变的床面变化过程的足够的空间和时间覆盖。床面变化数据提供了同步的水动力数据，即4个站点的水位、波高、潮流速度、中沉积物粒度（D-50）和叶绿素a水平。该数据集揭示了在日至季节尺度上不同的空间形态动力学模式，这对理论和模型的发展有价值。在日尺度上，该数据集特别具有指导意义，因为它包括许多风暴事件，其响应可以在床面变化观测中检测到。这样的数据很少见，但对研究潮滩对高能量条件的反应很有用。该数据集可从4TU获得。ResearchData (https://doi.org/10.4121/12693254.v4; Hu et al., 2020)，预计将从正在进行和计划进行的调查中获得更多SED传感器数据。
Tidal flats provide valuable ecosystem services such as flood protection and carbon sequestration. Erosion and accretion processes govern the ecogeomorphic evolution of intertidal ecosystems (marshes and bare flats) and, hence, substantially affect their valuable ecosystem services. To understand the intertidal ecosystem development, high-frequency bed-level change data are thus needed. However, such datasets are scarce due to the lack of suitable methods that do not involve excessive labour and/or costly instruments. By applying newly developed surface elevation dynamics (SED) sensors, we obtained unique high-resolution daily bed-level change datasets in the period 2013-2017 from 10 marsh-mudflat sites situated in the Netherlands, Belgium, and the United Kingdom in contrasting physical and biological settings. At each site, multiple sensors were deployed for 9-20 months to ensure sufficient spatial and temporal coverage of highly variable bed-level change processes. The bed-level change data are provided with synchronized hydrodynamic data, i.e. water level, wave height, tidal current velocity, medium sediment grain size (D-50), and chlorophyll a level at four sites. This dataset has revealed diverse spatial morphodynamics patterns over daily to seasonal scales, which are valuable to theoretical and model development. On the daily scale, this dataset is particularly instructive, as it includes a number of storm events, the response to which can be detected in the bed-level change observations. Such data are rare but useful to study tidal flat response to highly energetic conditions.The dataset is available from 4TU.ResearchData (https://doi.org/10.4121/12693254.v4; Hu et al., 2020), which is expected to expand with additional SED sensor data from ongoing and planned surveys.