Citation:

PANGAEA.962988

Name: Mercury from sediment short core EN18232-1 of Lake Khamra, SW Yakutia, Siberia, Russia
Published: 2024-04-10
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Lake sediment; Mercury concentration; Pristine lake; Russia; Siberia; Yakutia

Always quote citation above when using data! You can download the citation in several formats below.

RIS Citation BibTeX Citation Text Citation Facebook TwitterShow Map Google Earth

Abstract:

The datafile presents total mercury concentrations (THg, given in µg/kg) of all subsamples (n=39) of sedimentary short core EN18232-1. All measurements were carried out at the Permafrost Carbon and Nitrogen Lab (CarLa) at AWI Potsdam. Mercury concentrations were measured with a MLS-MWS DMA-80 evo III. The machine detection limit was 0.003 ng, with a laboratory proven limit of determination of 0.4 ng. Furthermore, we provide mercury fluxes (HgAr, µg/m²/a) according to the method described in detail in Biskaborn et al. (2023) using the equations in the Comment section below. The sedimentation rates (SR in cm/a) were calculated following Pfalz et al. (2022), whereby xi is the sample depth of interest and xi-1 its previous layer. We used the mean ages of the age-depth-model results of the shortcore EN18232-1. This is followed by the mass accumulation rate (MAR in g/cm²/a), where we used the mean value of the dry bulk density (DBD in g/cm³) of the short core EN18232-1. Consequently, we calculated the mercury accumulation rates HgAr in µg/m²/a.

Keyword(s):

Lake sediment; Mercury concentration; Pristine lake; Russia; Siberia; Yakutia

Supplement to:

Stieg, Amelie; Biskaborn, Boris K; Herzschuh, Ulrike; Strauss, Jens; Pestryakova, Luidmila A; Meyer, Hanno (2024): Hydroclimatic anomalies detected by a sub-decadal diatom oxygen isotope record of the last 220 years from Lake Khamra, Siberia. Climate of the Past, 20(4), 909-933, https://doi.org/10.5194/cp-20-909-2024

References:

Biskaborn, Boris K; Forster, Amy; Pfalz, Gregor; Pestryakova, Luidmila A; Stoof-Leichsenring, Kathleen Rosmarie; Strauss, Jens; Kröger, Tim; Herzschuh, Ulrike (2023): Diatom responses and geochemical feedbacks to environmental changes at Lake Rauchuagytgyn (Far East Russian Arctic). Biogeosciences, 20(9), 1691-1712, https://doi.org/10.5194/bg-20-1691-2023

Pfalz, Gregor; Diekmann, Bernhard; Freytag, Johann-Christoph; Syrykh, Luidmila S; Subetto, Dmitry A; Biskaborn, Boris K (2022): Improving age–depth relationships by using the LANDO (“Linked age and depth modeling”) model ensemble. Geochronology (GChron), 4(1), 269-295, https://doi.org/10.5194/gchron-4-269-2022

Project(s):

Permafrost Research (AWI_Perma)

Polar Terrestrial Environmental Systems @ AWI (AWI_Envi)

Coverage:

Latitude: 59.990910 * Longitude: 112.983730

Date/Time Start: 2018-08-14T00:00:00 * Date/Time End: 2018-08-14T00:00:00

Minimum DEPTH, sediment/rock: 0.01 m * Maximum DEPTH, sediment/rock: 0.39 m

Event(s):

EN18232-1 (Lake Khamra) * Latitude: 59.990910 * Longitude: 112.983730 * Date/Time: 2018-08-14T00:00:00 * Elevation: 340.0 m * Location: Lake Khamra, SW Yakutia, Russia * Campaign: (Chukotka 2018) * Basis: AWI Arctic Land Expedition * Method/Device: Gravity corer, UWITEC (GCUWI) * Comment: core length: 0.42 m; the short core was subsampled gapless in 1 cm increments, in total 39 subsamples

Comment:

Equations for mercury flux calculation:

SR(xi) = (depth(xi) - depth(xi-1)) / (age(xi) - age(xi-1))

MAR = DBD * SR

HgAr = Hg * MAR * 10

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Stieg, Amelie
2	Sample ID	Sample ID		Stieg, Amelie
3	DEPTH, sediment/rock	Depth sed	m	Stieg, Amelie		Geocode – mean
4	Depth, sediment/rock, top/minimum	Depth sed top	m	Stieg, Amelie
5	Depth, sediment/rock, bottom/maximum	Depth sed bot	m	Stieg, Amelie
6	Mercury	Hg	µg/kg	Stieg, Amelie	Mercury analyser, MLS-MWS, DMA-80 evo III	THg
7	Density, dry bulk	DBD	g/cm³	Stieg, Amelie	Calculated	mean
8	Sedimentation rate per year	SR	cm/a	Stieg, Amelie	Calculation according to Pfalz et al. (2022)
9	Accumulation rate, mass, per year	MAR	g/cm²/a	Stieg, Amelie	Calculated
10	Mercury, flux	Hg flux	µg/m²/a	Stieg, Amelie	Calculation according to Biskaborn et al. 2023	HgAr

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

312 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 Event	2 Sample ID	3 Depth sed [m]	4 Depth sed top [m]	5 Depth sed bot [m]	6 Hg [µg/kg]	7 DBD [g/cm³]	8 SR [cm/a]	9 MAR [g/cm²/a]	10 Hg flux [µg/m²/a]
EN18232-1	EN18232-1-01	0.01	0.00	0.01	246.35	0.122	0.3	0.04	99.8
EN18232-1	EN18232-1-02	0.01	0.01	0.02	225.73	0.122	0.2	0.02	45.7
EN18232-1	EN18232-1-03	0.03	0.02	0.03	236.51	0.122	0.1	0.01	31.9
EN18232-1	EN18232-1-04	0.04	0.03	0.04	235.62	0.122	0.1	0.01	28.6
EN18232-1	EN18232-1-05	0.04	0.04	0.05	193.75	0.122	0.1	0.01	23.6
EN18232-1	EN18232-1-06	0.06	0.05	0.06	177.41	0.122	0.1	0.01	21.6
EN18232-1	EN18232-1-07	0.07	0.06	0.07	202.16	0.122	0.1	0.01	27.3
EN18232-1	EN18232-1-08	0.08	0.07	0.08	171.32	0.122	0.1	0.02	26.0
EN18232-1	EN18232-1-09	0.08	0.08	0.09	145.72	0.122	0.2	0.02	29.5
EN18232-1	EN18232-1-10	0.10	0.09	0.10	132.22	0.122	0.2	0.02	26.8
EN18232-1	EN18232-1-11	0.11	0.10	0.11	125.00	0.122	0.2	0.02	30.4
EN18232-1	EN18232-1-12	0.11	0.11	0.12	117.72	0.122	0.2	0.02	23.9
EN18232-1	EN18232-1-13	0.12	0.12	0.13	112.11	0.122	0.2	0.02	27.3
EN18232-1	EN18232-1-14	0.14	0.13	0.14	111.06	0.122	0.2	0.02	27.0
EN18232-1	EN18232-1-15	0.15	0.14	0.15	111.01	0.122	0.2	0.02	27.0
EN18232-1	EN18232-1-16	0.15	0.15	0.16	112.13	0.122	0.2	0.02	22.7
EN18232-1	EN18232-1-17	0.17	0.16	0.17	93.12	0.122	0.2	0.02	22.6
EN18232-1	EN18232-1-18	0.17	0.17	0.18	93.63	0.122	0.2	0.02	22.8
EN18232-1	EN18232-1-19	0.18	0.18	0.19	95.52	0.122	0.2	0.02	23.2
EN18232-1	EN18232-1-20	0.20	0.19	0.20	95.09	0.122	0.2	0.02	23.1
EN18232-1	EN18232-1-21	0.21	0.20	0.21	95.82	0.122	0.2	0.02	23.3
EN18232-1	EN18232-1-22	0.21	0.21	0.22	94.01	0.122	0.2	0.02	22.9
EN18232-1	EN18232-1-23	0.23	0.22	0.23	82.50	0.122	0.2	0.02	20.1
EN18232-1	EN18232-1-24	0.23	0.23	0.24	90.09	0.122	0.2	0.02	21.9
EN18232-1	EN18232-1-25	0.24	0.24	0.25	90.53	0.122	0.2	0.02	22.0
EN18232-1	EN18232-1-26	0.26	0.25	0.26	81.74	0.122	0.2	0.02	19.9
EN18232-1	EN18232-1-27	0.27	0.26	0.27	93.46	0.122	0.2	0.02	18.9
EN18232-1	EN18232-1-28	0.28	0.27	0.28	91.25	0.122	0.2	0.02	22.2
EN18232-1	EN18232-1-29	0.29	0.28	0.29	92.04	0.122	0.2	0.02	22.4
EN18232-1	EN18232-1-30	0.29	0.29	0.30	83.46	0.122	0.2	0.02	20.3
EN18232-1	EN18232-1-31	0.30	0.30	0.31	94.68	0.122	0.2	0.02	23.0
EN18232-1	EN18232-1-32	0.32	0.31	0.32	91.40	0.122	0.2	0.02	22.2
EN18232-1	EN18232-1-33	0.33	0.32	0.33	91.88	0.122	0.2	0.02	22.3
EN18232-1	EN18232-1-34	0.34	0.33	0.34	91.08	0.122	0.2	0.02	22.1
EN18232-1	EN18232-1-35	0.34	0.34	0.35	88.10	0.122	0.2	0.02	21.4
EN18232-1	EN18232-1-36	0.35	0.35	0.36	106.45	0.122	0.2	0.02	25.9
EN18232-1	EN18232-1-37	0.36	0.36	0.37	108.64	0.122	0.2	0.02	26.4
EN18232-1	EN18232-1-38	0.38	0.37	0.38	102.23	0.122	0.2	0.02	24.9
EN18232-1	EN18232-1-39	0.39	0.38	0.39	94.29	0.122	0.2	0.02	22.9