DEM_RAW_README.txt
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Date: 19 December 2019

Dataset creator and contact person:
Roeland C. van de Vijsel
roeland.van.de.vijsel[at]nioz.nl
NIOZ Royal Netherlands Institute for Sea Research (www.nioz.nl)
Yerseke, The Netherlands

This data belongs to the dataset that can be downloaded from the NIOZ Data Repository (https://dataverse.nioz.nl) and/or can be found as DOI: 10.25850/nioz/7b.b.m (https://doi.org/10.25850/nioz/7b.b.m). 

This dataset is part of the following publication:
van de Vijsel, R.C., van Belzen, J., Bouma, T.J., van der Wal, D., Cusseddu, V., Purkis, S.J., Rietkerk, M. & van de Koppel, J. (2019). Estuarine biofilm patterns: Modern analogues for Precambrian self-organization. Earth Surface Processes and Landforms. DOI: 10.1002/esp.4783 (https://doi.org/10.1002/esp.4783).

Whenever any of these data (scripts, figures, raw and processed data) are used elsewhere, please refer correctly to this publication and its authors and please cite the dataset. Options for citing the dataset can be found on https://dataverse.nioz.nl. Dataset and publication published under the Creative Commons Attribution License.

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For the instructions on how to implement the current folder in the correct folder-subfolder structure of this dataset, please see the section B.3 of the file “README.txt” (to be downloaded from the NIOZ Data Repository). 

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After having followed the steps indicated in “README.txt”, the current folder should contain the following subfolders and files:

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“DEM_RAW_README.txt”
This is the current file.

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“Keetenisse YYYY-MM-DD.riproject”
These are 7 different folders (with different YYYY-MM-DD combinations). Each of these 7 folders contains raw laser scan data, obtained with Riegl Terrestrial Laser Scanner.

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“Keetenisse GLCS.txt” and “Keetenisse PRCS.txt”
Lists 6 GPS coordinates (GPS0001-GPS0006) (+ one additional test coordinate, “VADIJKRECHTSVOOR” ). The 6 GPS coordinates are the locations of the 6 fixed poles that delimit the ±50x50m focus area on Ketenisse mudflat. These poles were installed on 2015/08/11.

The coordinates in “Keetenisse GLCS.txt” are in [m] according to “Amersfoort/RD New” (EPSG 28992), the Dutch “Rijksdriehoek Stelsel”. “RD New” can be converted into WGS84 coordinates, for example using the excel sheet “CMConvertor%20v1.1%20wgs-rd.txt” in the subfolder “~/DEM_VDVI_Comparison/Georeferencing”.

The Z-locations are the heights of the delimiting poles, PLUS 0.085m height to the heart of the RIEGL reflectors (reflectors with 5cm diameter). The height of the poles themselves can also be found in the file “KEETENISSE20150811_ReferencePoles.txt” in the subfolder “~/DEM_VDVI_Comparison/Georeferencing”. Note that these 6 coordinates are the positions of the poles and NOT of the reference plates. The plates were placed directly next to the poles (to assist in finding the poles in the drone images), with the plates just outside the 50x50m plot delimited by the poles.

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“backup”
Subfolder, containing zipped versions of the two text files “Keetenisse GLCS.txt” and “Keetenisse PRCS.txt”.

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