Citation:

PANGAEA.946949

Name: Polonium-210 data from West Antarctic Peninsula sediment cores
Published: 2022-08-09
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Age model; Antarctica; Po-210; Sediment cores

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Abstract:

Three sediment cores were collected along the West Antarctic Peninsula during RRS James Clark Ross expedition JR15003. Pb-210 analyses of sediment samples were carried out at GAU-Radioanalytical Laboratories, National Oceanography Centre, Southampton. The samples were measured by alpha spectrometry of Po-210, a proxy method that gives the activity of Pb-210, as Po-210 is a granddaughter of Pb-210 (Appleby, 2008; doi:10.1177/0959683607085598). The sediment samples were almost 2 years old, so it was assumed Pb-210 had reached secular equilibrium with Po-210 (half-life = 138 days) within the sediment (Baskaran, 2011; doi:10.1016/j.jenvrad.2010.10.007 and San Miguel et al., 2002; doi:10.1016/S0168-9002(02)01415-8).

Keyword(s):

Age model; Antarctica; Po-210; Sediment cores

Supplement to:

Cassarino, Lucie; Hendry, Katharine R; Henley, Sian Frances; MacDonald, Ellen; Arndt, Sandra; de Freitas, Felipe Sales; Pike, Jennifer; Firing, Yvonne L (2020): Sedimentary Nutrient Supply in Productive Hot Spots off the West Antarctic Peninsula Revealed by Silicon Isotopes. Global Biogeochemical Cycles, 34(12), https://doi.org/10.1029/2019GB006486

Coverage:

Median Latitude: -66.313687 * Median Longitude: -67.721593 * South-bound Latitude: -67.582400 * West-bound Longitude: -70.170790 * North-bound Latitude: -64.508990 * East-bound Longitude: -64.847880

Date/Time Start: 2015-12-25T00:00:00 * Date/Time End: 2015-12-28T00:00:00

Minimum DEPTH, sediment/rock: 0.00 m * Maximum DEPTH, sediment/rock: 0.26 m

Event(s):

JR15003_1 * Latitude: -64.508990 * Longitude: -64.847880 * Date/Time: 2015-12-25T00:00:00 * Location: West Antarctic Peninsula * Campaign: * Basis: * Method/Device: Multiple investigations (MULT)

JR15003_2 * Latitude: -66.849670 * Longitude: -70.170790 * Date/Time: 2015-12-27T00:00:00 * Location: West Antarctic Peninsula * Campaign: * Basis: * Method/Device: Multiple investigations (MULT)

JR15003_3 * Latitude: -67.582400 * Longitude: -68.146110 * Date/Time: 2015-12-28T00:00:00 * Location: West Antarctic Peninsula * Campaign: * Basis: * Method/Device: Multiple investigations (MULT)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Hendry, Katharine R
2	Campaign	Campaign		Hendry, Katharine R
3	Station label	Station		Hendry, Katharine R
4	Number	No		Hendry, Katharine R		Event number
5	Latitude of event	Latitude		Hendry, Katharine R
6	Longitude of event	Longitude		Hendry, Katharine R
7	Date/Time of event	Date/Time		Hendry, Katharine R
8	DEPTH, sediment/rock	Depth sed	m	Hendry, Katharine R		Geocode
9	Polonium-210, per unit sediment mass	210Po/sed	Bq/g	Hendry, Katharine R	Alpha spectrometry
10	Polonium-210, per unit sediment mass, error	210Po/sed e	±	Hendry, Katharine R	Alpha spectrometry

License:

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

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

140 data points

Data

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

1 Event	2 Campaign	3 Station	4 No	5 Latitude	6 Longitude	7 Date/Time	8 Depth sed [m]	9 210Po/sed [Bq/g]	10 210Po/sed e [±]
JR15003_1	JR15003	1	2	-64.5090	-64.8479	2015-12-25	0.02	0.377	0.049
JR15003_1	JR15003	1	2	-64.5090	-64.8479	2015-12-25	0.04	0.187	0.025
JR15003_1	JR15003	1	2	-64.5090	-64.8479	2015-12-25	0.06	0.215	0.027
JR15003_1	JR15003	1	2	-64.5090	-64.8479	2015-12-25	0.08	0.112	0.015
JR15003_1	JR15003	1	2	-64.5090	-64.8479	2015-12-25	0.10	0.074	0.009
JR15003_1	JR15003	1	2	-64.5090	-64.8479	2015-12-25	0.12	0.088	0.014
JR15003_1	JR15003	1	2	-64.5090	-64.8479	2015-12-25	0.14	0.080	0.011
JR15003_1	JR15003	1	2	-64.5090	-64.8479	2015-12-25	0.18	0.051	0.007
JR15003_1	JR15003	1	2	-64.5090	-64.8479	2015-12-25	0.26	0.048	0.006
JR15003_2	JR15003	2	4	-66.8497	-70.1708	2015-12-27	0.00	0.336	0.045
JR15003_2	JR15003	2	4	-66.8497	-70.1708	2015-12-27	0.02	0.208	0.027
JR15003_2	JR15003	2	4	-66.8497	-70.1708	2015-12-27	0.04	0.132	0.018
JR15003_2	JR15003	2	4	-66.8497	-70.1708	2015-12-27	0.06	0.101	0.014
JR15003_2	JR15003	2	4	-66.8497	-70.1708	2015-12-27	0.08	0.119	0.016
JR15003_2	JR15003	2	4	-66.8497	-70.1708	2015-12-27	0.10	0.149	0.020
JR15003_2	JR15003	2	4	-66.8497	-70.1708	2015-12-27	0.12	0.092	0.013
JR15003_2	JR15003	2	4	-66.8497	-70.1708	2015-12-27	0.14	0.076	0.011
JR15003_2	JR15003	2	4	-66.8497	-70.1708	2015-12-27	0.16	0.052	0.008
JR15003_3	JR15003	3	6	-67.5824	-68.1461	2015-12-28	0.00	0.264	0.035
JR15003_3	JR15003	3	6	-67.5824	-68.1461	2015-12-28	0.02	0.235	0.030
JR15003_3	JR15003	3	6	-67.5824	-68.1461	2015-12-28	0.04	0.226	0.029
JR15003_3	JR15003	3	6	-67.5824	-68.1461	2015-12-28	0.06	0.176	0.022
JR15003_3	JR15003	3	6	-67.5824	-68.1461	2015-12-28	0.08	0.137	0.018
JR15003_3	JR15003	3	6	-67.5824	-68.1461	2015-12-28	0.10	0.098	0.013
JR15003_3	JR15003	3	6	-67.5824	-68.1461	2015-12-28	0.12	0.070	0.009
JR15003_3	JR15003	3	6	-67.5824	-68.1461	2015-12-28	0.14	0.055	0.007
JR15003_3	JR15003	3	6	-67.5824	-68.1461	2015-12-28	0.18	0.038	0.005
JR15003_3	JR15003	3	6	-67.5824	-68.1461	2015-12-28	0.26	0.025	0.003