Author: Dante M. L. Horemans 
Email: dmlhoremans@vims.edu (or dmlhoremans@pm.me)
Date: 10 July 2022

Sampling date: 24 January 2019, 1 tidal cycle
Location: Scheurrak (long = 53.33365333, lat = 7.15654500)

Instruments used: 

* LIST200x Sequoia instrument 
* YSI 6600 series
* Diver
* two light sensors two determine the light extinction coefficients (based on OMES reports[1])
* Lab analysis (based on OMES reports[1])

Measured:

----Continuously---- [every 1 s (Diver)- 1.5 minute (YSI)]

* Turbidity (YSI, serial 18G101602)
* Specific Conductivity (YSI, serial 18G100710; Diver serial 17-T2950 317)
* Temperature (YSI, serial 18G100710; Diver serial 17-T2950 317)
* Oxygen saturation (YSI, serial 18G104136)
* Oxygen concentration (YSI, serial 18G104136)
* pH (YSI, serial 18H105644)
* Exponential light extinction coefficient kd (two light sensors)
* Water depth (using a pressure sensor; Diver serial 17-T2950 317) 

----Vertical profiles---- (every ~ 30 minutes)

* Volume particle size distribution assuming spherically-shaped particles (LISST200x)
* Volume particle size distribution assuming randomly-shaped particles (LISST200x)
* Mean binsize-weighted [or midpoint-weighted, see Horemans et al. (2021)] floc size assuming spherically-shaped particles
* Mean binsize-weighted [or midpoint-weighted, see Horemans et al. (2021)] floc size assuming randomly-shaped particles

----Bucket water surface samples---- (same bucket as Manning's surface settling velocities)

* Dissolved Organic Carbon 
	method: The DOC concentration is colorimetrically determined after filtering an in-situ water 	subsample using a glass syringe and a type Whatmann GF/F (0.7 µm) filter.  
* Dissolved Inorganic Carbon
	method: The DIC concentration follows from pH and alkalinity (TALK) (Lewis & Wallace, 1998). To determine TALK, 50 ml in situ water samples are filtered (GFF, 0.7 µm) and conserved using mercurychloride at 4°C. Next, TALK is estimated using an automated titrator (Mettler-Toledo, precision 0.3 %) and a known HCl reference sample (Titrisol standard 0.01 N). 

Data files:

./data/edom18_winter_SB_EMD_DiverT2950.nc
./data/edom18_winter_SB_EMD_kd_surface.nc
./data/edom18_winter_SB_EMD_LabAnalysis.nc
./data/edom18_winter_SB_EMD_LIST200x.nc
./data/edom18_winter_SB_EMD_YSI_water_surface.nc

Figure examples:

./figures/ 

References:

[1] Maris, T., P. Gelsomini, D. M. L. Horemans and P. Meire, 2020. Onderzoek naar de gevolgen van het Sigmaplan, baggeractiviteiten en havenuitbreiding in de Zeeschelde op het milieu. Geïntegreerd eindverslag van het onderzoek verricht in 2019. ECOBE 020-R265. Universiteit Antwerpen, Antwerpen.

[2] Horemans, D. M. L.,  Dijkstra, Y. M., Schuttelaars, H. M., Sabbe, K., Vyverman, W., Meire, P., & Cox, T. J. S. (2021). Seasonal variations in flocculation and erosion affecting the large-scale suspended sediment distribution in the Scheldt estuary: The importance of biotic effects. Journal of Geophysical Research: Oceans, 126, e2020JC016805. https://doi.org/10.1029/2020JC016805.

[3] Lewis, E., and D.W.R. Wallace. 1998. MATLAB Program Developed for CO2 System Calculations. ORNL/CDIAC-105. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, U.S. Department of Energy, Oak Ridge, Tennessee.