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Wave Glider data on surface and water-column currents and turbidity. 22-day trajectory around Oosthinder sandbank, Belgian part of the North Sea
Citable as data publication
Van Lancker V.; Baeye M.; Operational Directorate Natural Environment - Royal Belgian Institute of Natural Sciences, Belgium; (2015): Wave Glider data on surface and water-column currents and turbidity. 22-day trajectory around Oosthinder sandbank, Belgian part of the North Sea. http://dx.doi.org/10.14284/2

Availability: CC0 To the extent possible under law, the person who associated CC0 with this dataset has waived all copyright and related or neighboring rights to this dataset.

Description
This dataset is related to the employment of the unmanned surface vehicle Wave Glider for the study of sedimentary processes in a shallow sandbank area in the Belgian part of the North Sea. During 22 days, data on surface and water-column currents and turbidity were recorded along 39 loops around an aggregate-extraction site. Correlation with wave and tidal-amplitude data allowed the quantification of current- and wave-induced advection and resuspension, being important background information to assess dredging impacts.


This dataset was submitted together with the paper: Van Lancker, V.; Baeye, M. (2015). Wave glider monitoring of sediment transport and dredge plumes in a shallow marine sandbank environment. PLoS One 10(6): e0128948 dx.doi.org/10.1371/journal.pone.0128948 more


Important anomalies in suspended particulate matter concentrations in the water column suggested dredging-induced overflow of sediments in the near field (i.e., dynamic plume), and settling of finer-grained material in the far field (i.e., passive plume). Capturing the latter is a successful outcome to this experiment, since the location of dispersion and settling of a passive plume is highly dependent on the ruling hydro-meteorological conditions and thus difficult to predict. Deposition of the observed sediment plumes may cause habitat changes in the long-term.


The Wave Glider (www.liquidr.com) was equipped with a fluorometer (Turner Designs, C3 submersible fluorometer), with sensors for measuring a.o. colour dissolved organic matter (CDOM) and crude and refined (poly- and mono-aromatic hydrocarbons) oil fluorescence, and for turbidity and water temperature just below the float of the Wave Glider. The fluorometer featured three optical sensors covering the spectrum from the deep ultraviolet to the infrared. The light-emitting diode for measuring turbidity from the scattering of light operated at a wavelength of 850 nm. Measured values were expressed in relative fluorescence units (RFU). Only, the turbidity data were so far further investigated. Datasets include the C3 turbidity data in RFU and converted to suspended particulate matter concentration (mgl-1) [WG-C3]


Current and acoustic backscatter data were acquired in three parts: part 1 with a vertical bin or cell size of 1 m, and glider motion removed, part 2 with a cell size of 2 m, because of an additional bottom track, and part 3 with similar settings as part 1. The primary datasets are the ADCP current data (ms-1) and error velocities, the ADCP backscatter data in counts for the three parts. And the ADCP backscatter data converted in suspended particulate matter concentration (mgl-1) [WG_ADCP_Part1; WG_ADCP_Part2; WG_ADCP_Part3]; [WG_ADCP_Part1_BS; WG_ADCP_Part2_BS; WG_ADCP_Part3_BS]; [WG_ADCP_SPM_MATRIX_ALLDATA].


Liquid Robotics (www.liquidr.com) provided the platform and sensors to conduct the experiment. The study design relates to the project MOZ4 (Flemish Authorities, Agency Maritime Services and Coast, Coast, contract 211.177). Data collection and analysis were supported by the ZAGRI contract, a continuous monitoring programme, paid from the revenues of marine aggregate extraction activities. The paper contributes also to the Brain-be project TILES (Transnational and Integrated Long-term marine Exploitation Strategies), subsidised by Belgian Science Policy under contract BR/121/A2/TILES ( www.odnature.be/tiles).


Scope
Themes:
Physical > Currents - drift - dispersion - tracers, Water composition > Suspended matter - turbidity
Keywords:
Marine, Marine aggregate extraction, Sediment transport, Suspended particulate matter, Unmanned Surface Vehicle, ANE, Belgium, Belgian Continental Shelf (BCS), ANE, Belgium, Hinder Banks, Oosthinder

Geographical coverage
ANE, Belgium, Belgian Continental Shelf (BCS) [Marine Regions]
ANE, Belgium, Hinder Banks, Oosthinder Stations [Marine Regions]
22 day trajectory
Coordinates: MinLong: 2,554; MinLat: 51,455 - MaxLong: 2,7; MaxLat: 51,613 [WGS84]

Temporal coverage
15 April 2013 - 6 May 2013

Parameters
Backscatter Methodology , Current magnitude and direction Methodology , Solid particulate matter in water Methodology , Turbidity Methodology
Backscatter: ADCP-derived water column backscatter
ADCP-derived water column backscatter resolved at 1 to 2 m bin size. (Teledyne/RD Instruments, 307.2 kHz). Provided in 3 parts[WG_ADCP_Part1_BS; WG_ADCP_Part2_BS; WG_ADCP_Part3_BS]
Current magnitude and direction: ADCP-derived water column currents
ADCP-derived water column currents resolved at 1 to 2 m bin size. (Teledyne/RD Instruments, 307.2 kHz) Provided in 3 parts. [WG-ADCP_Part1; WG-ADCP_Part2; WG-ADCP_Part3]
Solid particulate matter in water: ADCP backscatter converted to SPM
ADCP-derived water column backscatter converted to suspended particulate matter. 1 matrix with all data is provided.[WG_ADCP_SPMC_MATRIX_ALLDATA]

Solid particulate matter in water: Surface turbidity data converted to SPM
Surface turbidity data from Turner Designs, C3 submersible fluorometer converted to suspended particulate matter concentration. Used in file [WG-C3]
Turbidity: C3 submersible fluorometer
Surface turbidity data from Turner Designs, C3 submersible fluorometer Used in file [WG-C3]

Contributors
Koninklijk Belgisch Instituut voor Natuurwetenschappen (IRScNB/KBIN), moredata creator Koninklijk Belgisch Instituut voor Natuurwetenschappen; Operationele Directie Natuurlijk Milieu (OD Natuur), moredata creator

Publication
Based on this dataset:
Van Lancker, V. et al. (2014). Monitoring of the impact of the extraction of marine aggregates, in casu sand, in the zone of the Hinder Banks . Report MOZ4-ZAGRI/X/VVL/201401/EN/SR01. RBINS-OD Nature: Brussels. 384 + annex pp., more
Van Lancker, V.; Baeye, M. (2015). Wave glider monitoring of sediment transport and dredge plumes in a shallow marine sandbank environment. PLoS One 10(6): e0128948. hdl.handle.net/10.1371/journal.pone.0128948 , more

Dataset status: Completed
Data type: Data
Data origin: Research: field experiment
Metadatarecord created: 2015-03-31
Information last updated: 2015-06-16
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