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Turbidity and suspended sediment concentration profiles measured monthly or bi-weekly in the Zeeschelde at 16 stations using an OBS instrument
Citable as data publication
Maris, T.; Claus, J.; Meire, P.; Ecosystem Management Research Group - Uantwerpen ; International Marine and Dredging Consultants nv.; De Vlaamse Waterweg; Belgium; (2021): Turbidity and suspended sediment concentration profiles measured monthly or bi-weekly in the Zeeschelde at 16 stations using an OBS instrument.
Contact: Maris, Tom

Archived data
Availability: Creative Commons License This dataset is licensed under a Creative Commons Attribution 4.0 International License.

Turbidity and suspended sediment concentration profiles measured monthly (and bi-monthly in summer) in the Zeeschelde at 16 stations, independently of the tidal phase and spring/neap cycle using an OBS instrument. more

Turbidity profiles were obtained using conductivity-temperature-depth (CTD) and turbidity casts from aboard a ship at 16 fixed locations spread over the Belgian part of the Scheldt estuary during monthly or bi-weekly campaigns. Th e campaigns were conducted independently of the tidal phase and spring neap tide. Turbidity was measured at various depths using an Optical Backscatter point Sensor (OBS) of RBR type XR420 CTD+. During each campaign, the sensor was calibrated using a Formazine solution standard. The water body was vertically profiled using a minimal sampling frequency of 0.1 1/s. Simultaneously, two water samples were collected at each location using a Niskin bottle at approximately half the water depth and the water surface. SPM concentrations were gravimetrically determined after filtration in the laboratory. During each campaign, 16x2 SPM water samples were collected, resulting in 32 SPM estimates. To translate turbidity to SPM, we used these 32 samples to apply a linear data fit. We assumed that the relation between turbidity and SPM is location (and time) independent, i.e., equal for every location within one campaign. Calibration of turbidity to SPM resulted in a depth-profile of SPM at 16 fixed locations in the Flemish part of the Scheldt estuary.

Geology - Geophysics - Sedimentation
Marine/Coastal, Fresh water, Brackish water, Electrical conductivity, Salinity, Suspended particulate matter, Temperature, Turbidity, Belgium, Zeeschelde

Geographical coverage
Belgium, Zeeschelde [Marine Regions]

Temporal coverage
19 January 2015 - 16 January 2019

Suspended sediment concentration
Turbidity Methodology
Turbidity: Optical Backscatter Sensor (OBS)

Universiteit Antwerpen; Faculteit Wetenschappen; Departement Biologie; Onderzoeksgroep Ecosysteembeheer (ECOBE), moredata creatordata creator
De Vlaamse Waterweg, moresponsordata creator
International Marine & Dredging Consultants NV (IMDC), moredata creator

OMES 5 Main: Onderzoek naar de gevolgen van het Sigmaplan, baggeractiviteiten en havenuitbreiding in de Zeeschelde op het milieu, more

Based on this dataset
Horemans, D.M.L. et al. (2021). Seasonal variations in flocculation and erosion affecting the large‐scale suspended sediment distribution in the Scheldt estuary: the importance of biotic effects. JGR: Oceans 126(4): e2020JC016805., more

Dataset status: Completed
Data type: Data
Data origin: Monitoring: field survey
Metadatarecord created: 2020-02-13
Information last updated: 2021-02-18
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