Publication Date:
2023-08-29
Description:
This study aims to quantify groundwater discharges and associated DIC and CO2 fluxes at a high- and low- resolution scales on the Matane River (Qc, Canada). The flux calculations were based on a dataset including radon-222 activities (i.e., 222Rn), and measurements of dissolved inorganic carbon (i.e., DIC), total alkalinity, CO2 partial pressure (i.e., PCO2), and pH. The low-resolution study was undertaken at the corridor scale (07/2017), while the high-resolution study focused on a ~800 m long meander reach (08/2017). At the corridor scale, for the 12 sampling points, river water was analyzed in a riffle and in a pool to better represent river sections. Groundwater was also sampled from 4 private wells and in 2 piezometers for the corridor scale study, and from 12 piezometers inserted into the 18 ha meander floodplain for the meander scale study.
Keywords:
"in-situ" refers to in situ measurments using a showerhead-type gas exchanger connected to a PCO2 logger (CM-0001, CO2Meter, Inc); Alkalinity, total; Alkalinity, total, standard deviation; aquifer-river connectivity; Automated level loggers (Hobo U20-001) combined with DGPS elevation (only for piezometers); Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Carbonate chemistry; Carbon dioxide, partial pressure; Conductivity, electrical; DATE/TIME; ELEVATION; Flow injection analysis technique based on the method proposed by Hall and Aller, (1992) and calibrated with a reagent grade sodium bicarbonate (NaHCO3) solution, 2 replicates by samples; GRAN titration on 50 mL water samples with a Metrohm 848 Titrino Plus device calibrated by comparison with a Dickson certified reference material, 3 replicates by samples; inorganic carbon; LATITUDE; Location; LONGITUDE; Matane_river; measured or calculated according to the "PCO2 method" column; Method comment; Multiparametric probe, YSI Inc., 600QS [calibrated with 1413µS/cm standard]; Multiparametric probe (600QS, YSI Inc.); NBS values, Multiparametric probe (600QS, YSI Inc.) calibrated with three NBS buffers with known pH values (4.00, 7.00, and 10.00); pH; PIEZO; Piezometer; Quebec, Canada; radon; Radon-222; Radon-222, standard deviation; Sample ID; Site; subarctic river system; Temperature, water; Two RAD7 Alpha spectrometer (Durridge Inc.) in a series with an outgassing unit; Type; WGS84 EPSG:4326
Type:
Dataset
Format:
text/tab-separated-values, 746 data points
