Citation:

PANGAEA.929941

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:

Total organic carbon (TOC), biogenic silica (BSi) concentrations, total nitrogen (TN) concentrations and carbon nitrogen ratios (C/N) from short sediment core, which was taken in March 2019 from ice-covered lake are presented.

The sediment core analyzes of TOC, TN and C/N were measured on 5 to 10 mg of freeze-dried sediment using elemental analyzer COSTECH ECS4010. The biogenic silica concentrations were determined using weak alkaline extraction by Conley and Schelske (2001) using 30mg of freeze-dried sediment reacting with 40ml of 0.1M Na2CO3 for 5 hours. The DSi concentration in the extracted aliqote was measured using molybdate blue method (Strickland and Parsons, 1972) using Smartchem 200, AMS System descrete analyzer.

Further details:

Conley, Daniel J; Schelske, Claire (2002): Biogenic Silica. In: Smol J.P., Birks H.J.B., Last W.M., Bradley R.S., Alverson K. (eds) Tracking Environmental Change Using Lake Sediments. Developments in Paleoenvironmental Research, vol 3. Springer, Dordrecht, https://doi.org/10.1007/0-306-47668-1_14

Strickland, J D H; Parsons, T R (1972): A practical handbook of seawater analysis. Fisheries Research Board of Canada, 167 pp, hdl:10013/epic.46454.d001

Coverage:

Latitude: 68.298120 * Longitude: 19.121020

Date/Time Start: 2019-03-22T00:00:00 * Date/Time End: 2019-03-22T00:00:00

Minimum DEPTH, sediment/rock: 0.005 m * Maximum DEPTH, sediment/rock: 0.135 m

Event(s):

Lille_Bror_core_1 * Latitude: 68.298120 * Longitude: 19.121020 * Date/Time: 2019-03-22T00:00:00 * Location: Sweden * Method/Device: Gravity corer (GC)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Depth, top/min	Depth top	m	Zahajská, Petra
2	Depth, bottom/max	Depth bot	m	Zahajská, Petra
3	DEPTH, sediment/rock	Depth sed	m	Zahajská, Petra		Geocode
4	Porosity, fractional	Poros frac		Zahajská, Petra
5	Density, dry bulk	DBD	g/cm³	Zahajská, Petra
6	Opal, biogenic silica	bSiO2	%	Zahajská, Petra	Smartchem analyser (spectrophotometric detection)	dry wt%
7	Opal, biogenic silica, error	bSiO2 e	±	Zahajská, Petra	Smartchem analyser (spectrophotometric detection)	SD
8	Carbon, organic, total	TOC	%	Zahajská, Petra	Element analyser CHN, Costech	dry wt%
9	Carbon, organic, total, standard error	TOC std e	±	Zahajská, Petra	Element analyser CHN, Costech	SD
10	Nitrogen, total	TN	%	Zahajská, Petra	Element analyser CHN, Costech	dry wt%
11	Nitrogen, total, standard error	TN std e	±	Zahajská, Petra	Element analyser CHN, Costech	SD
12	Carbon/Nitrogen ratio	C/N		Zahajská, Petra	Calculated

License:

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

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

146 data points

Data

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

1 Depth top [m]	2 Depth bot [m]	3 Depth sed [m]	4 Poros frac	5 DBD [g/cm³]	6 bSiO2 [%]	7 bSiO2 e [±]	8 TOC [%]	9 TOC std e [±]	10 TN [%]	11 TN std e [±]	12 C/N
0.00	0.01	0.005	0.90	0.09	22.82	0.24	13.32	0.18	1.33	0.03	10.05
0.01	0.02	0.015	0.84	0.16	20.06	0.19	13.26	0.24	1.34	0.04	9.87
0.02	0.03	0.025	0.85	0.15	15.81	0.13	11.44	0.37	1.10	0.02	10.39
0.03	0.04	0.035	0.66	0.34	17.86	0.28	11.53	0.38	1.10	0.01	10.48
0.04	0.05	0.045	0.73	0.27	15.55	0.23	11.50	0.33	1.10	0.00	10.47
0.05	0.06	0.055	0.80	0.16	13.18	0.28	11.13	0.22	1.09	0.02	10.19
0.06	0.07	0.065	0.80	0.20	13.89	0.14	10.10	0.09	0.99	0.06	10.23
0.07	0.08	0.075	0.82	0.18	17.86	0.19	9.25	0.05	0.87	0.04	10.68
0.08	0.09	0.085	0.80	0.20	17.25	0.25	8.75		0.78		11.16
0.09	0.10	0.095	0.83	0.17	20.75	0.40	9.40	0.02	0.87	0.01	10.83
0.10	0.11	0.105	0.78	0.16	20.62	0.29	9.48		0.86		11.01
0.11	0.12	0.115	0.82	0.18	20.16	0.37	9.76		0.91		10.78
0.12	0.13	0.125	0.83	0.17	18.48	0.21	9.94	0.21	0.92	0.02	10.85
0.13	0.14	0.135	0.68	0.24	20.21	1.15	10.15		0.93		10.88