van Hateren, Johannes Albert; Prins, Maarten Arnoud; van Balen, Ronald Theodorus; Kasse, Cornelis; Schokker, Jeroen; van der Woude, John (2022): Grain size-shape distributions obtained by image processing of aeolian sediment samples from Lutterzand and Leusden in the Netherlands, 2020 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.942100
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Abstract:
We collected 247 sediment samples from aeolian deposits at Lutterzand (former coversand type locality in the Eastern Netherlands) and 250 samples in total from three sites in the aeolian deposits near Leusden (Central Netherlands, western fringe of the Amersfoort glacial basin). Sediment samples of approximately 2 g were pre-treated in ~100 ml demi-water with 5 ml 30% H2O2 to remove organics, 5 ml 10% HCl to remove carbonates and 300 mg Na4P2O7 ˖10H2O to disperse charged particles. The samples were studied for particle size and shape using a Sympatec Qicpic dynamic image analyser. This analyser is set-up using a 2 mm cuvette. To prevent clogging of the cuvette, pre-treated samples are sieved over a 1600 μm mesh, excluding larger grains from the measurement. Grain size-shape distributions were constructed using image analysis on the video data following the methodology in: Van Hateren et al. (2020). The dataset contains conD2d distributions (volumetric convexity-grain size distributions).
Related to:
van Hateren, Johannes Albert; van Buuren, Unze; Arens, Sebastiaan Martinus; van Balen, Ronald Theodorus; Prins, Maarten Arnoud (2020): Identifying sediment transport mechanisms from grain size–shape distributions, applied to aeolian sediments. Earth Surface Dynamics, 8(2), 527-553, https://doi.org/10.5194/esurf-8-527-2020
Coverage:
Median Latitude: 52.175110 * Median Longitude: 5.797709 * South-bound Latitude: 52.120430 * West-bound Longitude: 5.379920 * North-bound Latitude: 52.324520 * East-bound Longitude: 7.031630
Date/Time Start: 2016-07-01T00:00:00 * Date/Time End: 2019-09-28T00:00:00
Minimum Elevation: 0.3 m * Maximum Elevation: 5.5 m
Event(s):
Leusden-DT1 * Latitude: 52.121330 * Longitude: 5.379920 * Date/Time: 2016-07-01T00:00:00 * Elevation: 5.3 m * Location: Netherlands * Method/Device: Image analysis
Comment:
The first sheet (conD2d distributions) contains the volumetric convexity-grain size distributions (conD2d) of the Lutterzand and Leusden datasets. The first column specifies the lab number. The consecutive columns hold the volume (%) measured in the specific grain size-shape class (62 size classes times 100 shape classes = 6200 classes in total). The grain size and grain convexity of each size-shape class is shown in the sheet key to size and shape classes.
Sample information is shown in the sheet key to samples and can be linked to the conD2d distributions using the lab number.
The sheet contains event labels: one per site, four sites in total. All other relevant information is included. Besides lattitude-longitude in the WGS format we also show the X and Y coördinates of the Dutch coördinate system.
Date/time refers to the date/time of sample collection in the field.
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Basic curation (CurationLevelB)
Size:
17.9 MBytes