Citation:

PANGAEA.926395

Name: Reconstructed ozone concentration in Antarctica based on the relative abundance of freshwater diatoms providing from a sediment core of Profound Lake/King George Island/Antarctica
Published: 2021-01-07
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Antarctica; diatomos; ozone; proglacial lake; reconstructed model

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Abstract:

Profound Lake (formerly known as Lago Glubokoe or Glubokoye) (62°11,066'S;058°54,413'W), is situated on Fildes Peninsula, the largest ice-free area (29 km2) of King George Island, the largest of the South Shetland Islands, located in the extreme southwestern part of the island. This lake lies 500 m from the base of the Collins glacier, close to the Uruguayan research base (Artigas) and Maxwell Bay. Morphologically it has a surface area of 90 km² and 14.7 m maximum depth. It's a holocenic, non-impacted, pro-glacial lake where diatoms are abundant and diverse.

This organisms present a cell envelope, external to the plasma membrane, composed of rigid structure impregnated with silica called frustules, resistant to dissolution, that allow their preservation in sediment layers in the long term. These characteristics enable the use of diatoms in paleoenvironmental, paleoclimatic and paleoecological studies, thus we use the relative abundance of this organisms in a sediment corer in order to calibrate and evaluate the use of them as a proxy to reconstructed Ozone variability iin Antarctica.

Keyword(s):

Antarctica; diatomos; ozone; proglacial lake; reconstructed model

Coverage:

Latitude: -62.184433 * Longitude: -58.906883

Minimum DEPTH, sediment/rock: 0.015 m * Maximum DEPTH, sediment/rock: 0.225 m

Event(s):

Profound_Lake * Latitude: -62.184433 * Longitude: -58.906883 * Location: King George Island, Antarctica * Method/Device: Sediment corer (SEDCO)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Comment
1	DEPTH, sediment/rock	Depth sed	m	Oaquim, Anna Beatriz Jones	Geocode
2	Depth, top/min	Depth top	m	Oaquim, Anna Beatriz Jones
3	Depth, bottom/max	Depth bot	m	Oaquim, Anna Beatriz Jones
4	Age	Age	a AD/CE	Oaquim, Anna Beatriz Jones
5	AGE	Age	ka BP	Oaquim, Anna Beatriz Jones	Geocode
6	Aulacoseira glubokoyensis	A. glubokoyensis	%	Oaquim, Anna Beatriz Jones
7	Humidophila tabellariaeformis	H. tabellariaeformis	%	Oaquim, Anna Beatriz Jones
8	Diatomella balfouriana	D. balfouriana	%	Oaquim, Anna Beatriz Jones
9	Eunotia ralitsae	E. ralitsae	%	Oaquim, Anna Beatriz Jones
10	Gomphonema maritimo-antarcticum	G. maritimo-antarcticum	%	Oaquim, Anna Beatriz Jones
11	Psammothidium abundans	P. abundans	%	Oaquim, Anna Beatriz Jones
12	Stauroneis cf. delicata	S. cf. delicata	%	Oaquim, Anna Beatriz Jones
13	Brachysira minor	B. minor	%	Oaquim, Anna Beatriz Jones
14	Fragilaria cf. capuccina	F. cf. capuccina	%	Oaquim, Anna Beatriz Jones	new sp.
15	Planothidium rostrolanceolatum	P. rostrolanceolatum	%	Oaquim, Anna Beatriz Jones
16	Nitzschia cf. kleinteichiana	N. cf. kleinteichiana	%	Oaquim, Anna Beatriz Jones
17	Achnanthidium cf. maritimo-antarcticum	A. cf. maritimo-antarcticum	%	Oaquim, Anna Beatriz Jones
18	Planothidium australe	P. australe	%	Oaquim, Anna Beatriz Jones
19	Melosira cf. varians	M. cf. varians	%	Oaquim, Anna Beatriz Jones
20	Pinnularia cf. australomicrostauron	P. cf. australomicrostauron	%	Oaquim, Anna Beatriz Jones
21	Pinnularia borealis	P. boralis	%	Oaquim, Anna Beatriz Jones
22	Gomphonema sp.	Gomphonema sp.	%	Oaquim, Anna Beatriz Jones
23	Humidophila sp.	Humidophila sp.	%	Oaquim, Anna Beatriz Jones
24	Pinnularia sp.	Pinnularia sp.	%	Oaquim, Anna Beatriz Jones
25	Ozon, reconstructed	O3 reconst	DU	Oaquim, Anna Beatriz Jones

License:

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

Size:

506 data points

Data

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

1 Depth sed [m]	2 Depth top [m]	3 Depth bot [m]	4 Age [a AD/CE]	5 Age [ka BP]	6 A. glubokoyensis [%]	7 H. tabellariaeformis [%]	8 D. balfouriana [%]	9 E. ralitsae [%]	10 G. maritimo-antarcticum [%]	11 P. abundans [%]	12 S. cf. delicata [%]	13 B. minor [%]	14 F. cf. capuccina [%]	15 P. rostrolanceolatum [%]	16 N. cf. kleinteichiana [%]	17 A. cf. maritimo-antarcticum [%]	18 P. australe [%]	19 M. cf. varians [%]	20 P. cf. australomicrostauron [%]	21 P. boralis [%]	22 Gomphonema sp. [%]	23 Humidophila sp. [%]	24 Pinnularia sp. [%]	25 O3 reconst [DU]
0.015	0.01	0.02	2011	-0.061	37.31	7.16	14.14	0.17	1.19	4.60	1.19	3.41	2.04	1.02	0.34	0.00	2.73	2.04	0.17	0.00	0.00	13.46	9.03	244.42
0.025	0.02	0.03	2007	-0.057	37.34	6.56	13.75	0.63	1.41	0.31	0.78	12.19	1.25	0.47	0.16	1.72	0.16	1.09	1.09	0.00	0.00	3.59	17.50	233.50
0.035	0.03	0.04	2002	-0.052	68.44	8.84	13.47	0.68	0.00	0.41	0.00	1.36	1.50	0.68	0.00	0.00	0.00	0.00	0.14	0.00	0.00	0.00	4.49	232.83
0.045	0.04	0.05	2001	-0.051	66.52	8.51	4.47	0.87	0.00	5.77	0.14	2.02	1.30	0.43	0.29	0.00	0.14	0.00	0.87	0.00	0.00	1.44	7.22	233.45
0.055	0.05	0.06	1996	-0.046	64.69	9.84	3.04	0.72	1.45	4.34	0.14	1.59	2.17	0.14	0.72	0.00	0.00	0.29	0.00	0.00	0.00	1.01	9.84	232.83
0.065	0.06	0.07	1992	-0.042	80.08	5.84	5.18	0.40	0.00	0.00	0.93	0.40	1.20	1.20	0.53	0.00	0.00	0.40	0.40	0.00	0.00	0.53	2.92	232.83
0.075	0.07	0.08	1990	-0.040	79.01	3.55	4.67	0.81	0.00	0.10	0.30	1.93	1.32	1.83	0.20	0.10	0.30	0.10	0.51	0.10	0.00	0.30	4.87	234.82
0.085	0.08	0.09	1988	-0.038	84.04	2.12	4.02	0.22	0.00	0.00	0.33	1.56	1.00	0.78	0.22	0.00	0.11	0.00	1.56	0.00	0.00	0.00	3.91	233.31
0.095	0.09	0.10	1987	-0.037	80.74	5.67	1.13	0.99	0.71	1.13	0.42	0.99	1.42	0.00	1.13	0.57	0.42	0.00	1.56	0.99	0.00	0.00	2.12	241.39
0.105	0.10	0.11	1985	-0.035	26.90	4.78	0.71	0.18	4.07	19.29	0.00	4.78	6.73	5.49	11.15	1.59	2.12	0.00	1.24	1.59	0.00	0.71	7.08	252.71
0.115	0.11	0.12	1978	-0.028	26.70	5.38	0.90	0.72	6.81	23.84	0.00	3.58	1.97	4.48	12.54	1.08	1.25	0.00	1.25	3.41	0.18	0.72	4.84	267.98
0.125	0.12	0.13	1972	-0.022	38.98	4.92	25.32	0.55	3.28	4.01	0.36	1.28	3.64	1.09	6.38	0.00	0.55	1.09	1.09	3.46	1.09	0.18	2.37	299.13
0.135	0.13	0.14	1965	-0.015	41.46	3.65	24.54	0.00	0.17	5.14	2.65	2.16	4.15	0.33	2.16	1.49	0.66	0.17	0.17	0.83	2.16	1.16	6.63	321.01
0.145	0.14	0.15	1957	-0.007	74.07	0.99	14.20	1.11	1.23	2.59	0.49	0.12	0.25	0.12	0.49	0.62	0.37	0.12	0.25	0.00	0.74	0.00	2.22	261.80
0.155	0.15	0.16	1948	0.002	43.05	6.87	3.52	0.67	1.84	24.12	0.00	1.84	4.02	0.00	2.68	1.84	0.50	0.67	1.17	2.68	0.50	0.84	2.68	271.80
0.165	0.16	0.17	1936	0.014	68.96	4.32	0.54	0.94	1.75	3.78	0.81	3.10	2.56	0.27	4.05	0.54	0.13	0.40	1.62	0.27	2.56	0.13	3.24	330.05
0.175	0.17	0.18	1919	0.031	71.16	6.96	3.27	0.57	1.28	2.98	0.99	1.56	2.98	0.14	0.99	0.43	0.28	0.28	0.85	0.71	1.28	0.28	2.84	286.15
0.185	0.18	0.19	1898	0.052	60.63	3.99	0.83	1.33	2.82	11.79	0.66	1.33	3.65	0.33	1.50	0.66	0.50	0.83	2.49	0.33	3.32	0.17	2.66	360.05
0.195	0.19	0.20	1875	0.075	77.08	4.01	0.72	2.01	1.15	8.02	0.14	1.43	0.57	0.14	1.00	0.29	0.14	0.14	0.57	0.43	1.15	0.00	0.86	278.75
0.205	0.20	0.21	1848	0.102	68.78	7.97	0.33	0.49	1.63	10.57	0.16	0.33	0.65	0.00	3.09	0.98	0.00	0.33	0.00	0.16	2.28	0.33	1.63	318.11
0.215	0.21	0.22	1811	0.139	79.44	3.43	0.89	1.27	0.76	8.12	0.00	0.51	1.27	0.00	1.02	0.25	0.00	0.00	0.76	0.76	1.02	0.00	0.25	275.56
0.225	0.22	0.23	1790	0.160	71.53	3.47	0.83	0.56	1.39	12.22	0.00	1.25	1.11	0.00	3.19	0.83	0.00	0.14	0.14	1.11	0.83	0.00	1.39	271.21