Hydrochemistry of lakes and coastal sites in the MacKenzie River Delta in summer 2018 ...

• Main Authors: Bussmann, Ingeborg, Nehir, Münevver, Overduin, Pier Paul
• Format: Dataset
• Language: English
• Published: PANGAEA 2020
• Subjects: Event label; Date/Time of event; Latitude of event; Longitude of event; Location; Sample ID; DEPTH, water; pH; Conductivity, electrical; Oxygen, dissolved; Methane; Carbon, inorganic, dissolved; Alkalinity, total; Carbon, organic, dissolved; Nitrogen, organic, dissolved; Nitrate; Nitrite; Phosphate; Silicate; δ18O, water; δ18O, water, standard deviation; δ Deuterium, water; δ Deuterium, standard deviation; Deuterium excess; Fluoride; Chloride; Sulfate; Bromide; Aluminium; Barium 2+; Calcium; Iron; Potassium; Magnesium; Manganese; Sodium; Phosphorus; Silicon; Strontium 2+; Water sample; Multiprobe, WTW 340i; Gas chromatograph, Shimadzu 2014; Coulometric titration; Shimadzu TOC-VCPH total organic carbon analyzer; Continuous Segmented Flow Analyzer, SEAL Analytical, QuAAtro39; Mass spectrometer Finnigan Delta-S; Thermo Scientific Dionex IonPac AS11-HC-4μm Anion-Exchange Column fitted to a Thermo Scientific Dionex ICS-5000 Ion Chromatography; Inductively coupled plasma optical emission spectrometry ICP-OES, Perkin-Elmer, Optima 8300DV; CA-Land_2018_TrailValleyCreek; AWI Arctic Land Expedition; Arctic; Mackenzie River; Mackenzie river
• Online Access: https://dx.doi.org/10.1594/pangaea.916166; https://doi.pangaea.de/10.1594/PANGAEA.916166

Water samples were taken at the surface and the bottom in transects crossing the lake or coastal site from locations with observed erosion to presumably undisturbed locations. The water sampler (1.5 L Uwitec, Austria) was attached to a graduated rope, lowered by hand and filled twice. Combined water samples were transferred to 2 L Nalgene bottles, filled to the top and subsampled at the field station for further analysis.pH, dissolved oxygen concentration and electrical conductivity: pH, dissolved oxygen concentration and electrical conductivity were measured in the laboratory with a WTW 340i Multiprobe. Before each measurement the sensor was calibrated for oxygen and pH.Dissolved methane: At the coastal sites, 120 ml glass bottles were filled without bubbles and capped with butyl septa and aluminum crimps. After adding 10 ml of synthetic air (Alphagaz 1), we added 0.2 ml of 8 N NaOH. For the lakes, 60 ml syringes were filled with 40 ml of water and 20 ml of air. After shaking for 2 minutes, 10 ml of the ...