Data underlying the publication: Spatial and temporal variation in long-term silt accumulation in a back-barrier salt marsh

This dataset contains the data presented in the article: L. Cornacchia, J.P. Bakker, E.C. Koppenaal, et al., Spatial and temporal variation in long-term sediment accumulation in a back-barrier salt marsh, Geomorphology (2024), https://doi.org/10.1016/j.geomorph.2024.109191.The aim of this research was to investigate the spatial and temporal variation in sediment accumulation within the back-barrier salt marsh of Schiermonnikoog (The Netherlands). We conducted field measurements focusing on two parameters: elevation and thickness of the salt-marsh deposits. Elevation was measured with an optical levelling instrument before 2005, and a Trimble Spectra Precision laser from 2005 onwards. For the thickness of the deposits, we collected soil samples using a narrow auger. These measurements were conducted at two spatial scales: at the landscape scale, we covered the area from the base of the dunes to the intertidal flats with a grid of 820 points (sampled only in 2010). At the sub-catchment scale, we established six small-scale permanent transects in the field on the gradient between a low dune and adjacent salt marsh, resulting in a total of 500 to 680 measurements per transect. We sampled along these transects in 1992, 1992, 2001, 2005, 2007 and 2009.

本数据集包含下述论文中的相关数据：L. Cornacchia、J.P. Bakker、E.C. Koppenaal等，《障后盐沼长期沉积积累的时空变化（Spatial and temporal variation in long-term sediment accumulation in a back-barrier salt marsh）》，《地貌学（Geomorphology）》，2024年，DOI：https://doi.org/10.1016/j.geomorph.2024.109191。本研究旨在探究荷兰席尔蒙尼科格（Schiermonnikoog）障后盐沼（back-barrier salt marsh）内长期沉积积累的时空变化特征。研究聚焦于两项核心参数开展野外实测：盐沼沉积层的高程与厚度。2005年之前，高程测量采用光学水准仪；2005年起，则使用Trimble Spectra Precision型激光水准仪。针对沉积层厚度，研究人员通过窄口径螺旋钻采集土壤样本。本次测量覆盖两类空间尺度：在景观尺度上，研究人员以820个测点组成的网格覆盖了从沙丘基部至潮间带滩涂的区域（仅于2010年开展采样）；在子流域尺度上，研究人员在低矮沙丘与邻近盐沼间的梯度带上设置了6条小型永久样带，每条样带累计获得500至680组实测数据。研究分别于1992年、1992年、2001年、2005年、2007年及2009年对上述样带开展采样工作。