Schirrmeister, Lutz; Siegert, Christine (2017): Pore-water analyses of permafrost deposits from Lya_1999_2TZ, Bol'shoy Lyakhovsky Island in 1999 [dataset]. Alfred Wegener Institute - Research Unit Potsdam, PANGAEA, https://doi.org/10.1594/PANGAEA.881499
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Project(s):
Permafrost Research (Periglacial Dynamics) @ AWI (AWI_PerDyn)
Coverage:
Latitude: 73.337900 * Longitude: 141.306900
Event(s):
Lya_1999_2TZ * Latitude: 73.337900 * Longitude: 141.306900 * Location: Lyakhovsky Islands * Campaign: RU-Land_1999_Lyakhovsky (Lya_1999) * Basis: AWI Arctic Land Expedition * Method/Device: Multiple investigations (MULT) * Comment: horizontal distance from the Zimov'e River mouth in 1999: 1850 m W
Comment:
In order to get information about the pore-water characteristics from the dry samples, the water-soluble elements in the sediments were determined by shaking the samples with a proportionate amount of ultrapure water for a defined period of time. To obtain the water extracts, approximately 1 g of the freeze-dried sample was shaken for approximately 90 minutes in 50 ml centrifuge tubes with ultrapure water at a soil:water ratio of 1:25 using an overhead shaker (Gerhardt Laboshake). Then the suspension was centrifuged (Heraeus Multifuge 3s) at 4000 rpm for 15 minutes. The decanted extraction was filtered through a 0.45 µm cellulose acetate filter. We measured total dissolved elemental concentrations of Al, Ba, Ca, Fe, K, Mg, Mn, Na, P, Si, and Sr and anion concentrations of F-, Cl-, SO42-, Br-, NO3-, PO43-, and HCO3-.The element concentrations were analyzed using inductively coupled plasma-optical emission spectrometry (ICP-OES, Perkin-Elmer Optima 8300DV), while the anion content was determined by ion chromatography (IC, Thermo ICS2100). Hydrogen carbonate concentrations were measured by potentiometric pH-value titration with 0.01 M HCl using an automatic titrator (Metrohm 794 Basic Titrino). In order to estimate the procedural error, extractions were carried out in duplicate for every 5th to 10th sample and 2-3 blank solutions of ultrapure water were treated in the same manner as the extractions and measured for concentrations. Water EC and pH values were measured using a WTW MultiLab 540 multi-parameter device equipped with a TetraCon 325 cell referenced to 25 °C and a pH Sentix 81 electrode.
Parameter(s):
# | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
---|---|---|---|---|---|---|
1 | Sample code/label | Sample label | Schirrmeister, Lutz | |||
2 | Height above sea level | Height | m a.s.l. | Schirrmeister, Lutz | ||
3 | Sediment type | Sediment | Schirrmeister, Lutz | |||
4 | pH | pH | Schirrmeister, Lutz | |||
5 | Conductivity, electrolytic | EC | µS/cm | Schirrmeister, Lutz | ||
6 | Calcium | Ca2+ | mg/l | Schirrmeister, Lutz | ||
7 | Potassium | K+ | mg/l | Schirrmeister, Lutz | ||
8 | Magnesium | Mg2+ | mg/l | Schirrmeister, Lutz | ||
9 | Sodium | Na+ | mg/l | Schirrmeister, Lutz | ||
10 | Chloride | Cl- | mg/l | Schirrmeister, Lutz | ||
11 | Nitrate | [NO3]- | mg/l | Schirrmeister, Lutz | ||
12 | Sulfate | [SO4]2- | mg/l | Schirrmeister, Lutz | ||
13 | Bicarbonate ion | [HCO3]- | mg/l | Schirrmeister, Lutz | ||
14 | Comment | Comment | Schirrmeister, Lutz |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
161 data points
Data
1 Sample label | 2 Height [m a.s.l.] | 3 Sediment | 4 pH | 5 EC [µS/cm] | 6 Ca2+ [mg/l] | 7 K+ [mg/l] | 8 Mg2+ [mg/l] | 9 Na+ [mg/l] | 10 Cl- [mg/l] | 11 [NO3]- [mg/l] | 12 [SO4]2- [mg/l] | 13 [HCO3]- [mg/l] | 14 Comment |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2TZ-1-1 | 20.30 | peaty soil | 6.82 | 119 | 13.27 | 1.05 | 5.92 | 3.54 | 14.90 | 1.72 | 0.14 | 27.9 | extract yellowish |
2TZ-1-3 A | 20.80 | peaty soil | 5.88 | 53 | 3.93 | 0.92 | 2.73 | 1.32 | 0.59 | 2.30 | 0.00 | 13.7 | duplicate |
2TZ-1-3 B | 20.80 | peaty soil | 7.68 | 60 | 3.10 | 0.84 | 2.18 | 1.15 | 0.48 | 1.80 | 0.00 | 23.8 | duplicate |
2TZ-1-4 | 21.35 | alevrite | 6.41 | 34 | 2.21 | 0.66 | 1.22 | 1.45 | 2.43 | 0.63 | 0.11 | 11.0 | duplicate |
2TZ-1-4 | 21.35 | alevrite | 7.49 | 50 | 4.76 | 0.60 | 1.98 | 1.43 | 3.78 | 0.50 | 0.00 | 14.9 | duplicate |
2TZ-1-5 | 20.60 | alevrite | 7.17 | 146 | 10.17 | 0.91 | 6.87 | 3.96 | 35.82 | 3.38 | 0.11 | 23.5 | |
2TZ-2-1 | 21.80 | alevrite | 6.51 | 69 | 5.32 | 0.49 | 3.45 | 2.31 | 4.58 | 9.33 | 0.00 | 13.4 | |
2TZ-2-2 | 22.30 | alevrite | 6.75 | 48 | 3.95 | 0.73 | 1.73 | 1.90 | 3.03 | 5.19 | 0.00 | 12.7 | |
2TZ-2-3 | 23.10 | alevrite | 6.85 | 48 | 4.28 | 0.58 | 2.01 | 1.66 | 6.15 | 0.85 | 0.00 | 13.3 | |
2TZ-2-4 | 24.10 | alevrite | 7.74 | 116 | 8.64 | 0.33 | 3.58 | 8.71 | 23.46 | 6.10 | 0.00 | 23.6 | |
2TZ-2-5 | 24.80 | alevrite | 7.50 | 110 | 6.04 | 0.35 | 2.30 | 12.63 | 24.10 | 5.08 | 0.00 | 20.3 | |
2TZ-2-6 | 25.50 | alevrite | 7.75 | 179 | 15.06 | 0.38 | 4.81 | 12.65 | 39.49 | 9.21 | 0.00 | 28.4 |