Citation:

PANGAEA.931918

Name: Depth, age, diatom concentration and Chaetoceros resting spores of sediment core JPC43 in Neny Fjord, Antarctic Peninsula
Published: 2021-05-28
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Antarctic Peninsula; Climate change; diatoms; Holocene; Meltwater; Palaeoceanography; sea-ice; tidewater outlet glaciers

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Abstract:

Diatom abundance and assemblage data are presented for JPC43 - a ~12 m marine sediment core recovered from 576 m water depth in Neny Fjord, Marguerite Bay, Antarctic Peninsula (68.2571°S, 66.9617°W). The core was collected aboard the RVIB Nathanial B Palmer in 2002 during the NBP0201 scientific cruise (PI: Prof J B Anderson) to determine the timing of deglaciation in the fjords of the Antarctic Peninsula. The core record spans the Holocene with samples dated using an age model based on 5 reliable radiocarbon dates. Diatom concentrations and the contribution of Chaetoceros resting spores (CRS %) are calculated from counts (mean=474.4 valves) of the whole diatom assemblage - 'total counts' (n=81). The relevant methods are described and referenced in the associated publication (Allen et al. 2010).

Keyword(s):

Antarctic Peninsula; Climate change; diatoms; Holocene; Meltwater; Palaeoceanography; sea-ice; tidewater outlet glaciers

Related to:

Allen, Claire Susannah; Oakes-Fretwell, Lisa; Anderson, John B; Hodgson, Dominic A (2010): A record of Holocene glacial and oceanographic variability in Neny Fjord, Antarctic Peninsula. The Holocene, 20(4), 551-564, https://doi.org/10.1177/0959683609356581

Funding:

National Science Foundation (NSF), grant/award no. OPP-9909734 : LGM Late Pleistocene to Holocene Glacial History of West Antarctica

Coverage:

Latitude: -68.257100 * Longitude: -66.961700

Date/Time Start: 2002-02-19T00:00:00 * Date/Time End: 2002-02-20T00:00:00

Minimum DEPTH, sediment/rock: 0.00 m * Maximum DEPTH, sediment/rock: 11.80 m

Event(s):

NBP0201_JPC43 (JPC43) * Latitude: -68.257100 * Longitude: -66.961700 * Date/Time Start: 2002-02-19T00:00:00 * Date/Time End: 2002-02-20T00:00:00 * Elevation: -576.0 m * Location: Marguerite Bay * Campaign: * Basis: Nathaniel B. Palmer * Method/Device: Jumbo Piston Core (JPC)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	DEPTH, sediment/rock	Depth sed	m	Allen, Claire Susannah		Geocode
2	AGE	Age	ka BP	Allen, Claire Susannah		Geocode – cal ka
3	Diatoms, total	Diatoms	10⁶ #/g	Allen, Claire Susannah	Counting, diatoms	millions of valves per gram of dry sediment (mv/gds)
4	Chaetoceros sp., resting spores	Chaetoceros sp. rs	%	Allen, Claire Susannah	Counting, diatoms	CRS

License:

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

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

162 data points

Data

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

1 Depth sed [m]	2 Age [ka BP]	3 Diatoms [10⁶ #/g]	4 Chaetoceros sp. rs [%]
0.00	0.00	55.25017790	87.84
0.05	0.15	228.77800940	82.48
0.10	0.26	34.55169451	88.13
0.20	0.43	23.88553296	91.67
0.30	0.58	19.32023848	92.74
0.40	0.72	38.43475215	90.57
0.50	0.85	115.91419140	82.48
0.60	0.98	26.25059512	90.02
0.80	1.21	30.12773245	90.05
1.00	1.43	13.53157424	91.97
1.20	1.64	18.96732897	89.68
1.40	1.84	35.91817648	90.36
1.60	2.04	16.35396792	85.16
1.80	2.22	30.82766681	93.61
2.00	2.40	75.65678857	89.58
2.20	2.58	66.04973475	89.13
2.40	2.75	80.58573050	88.54
2.60	2.92	23.70479884	91.26
2.80	3.09	90.60414471	85.57
3.00	3.25	41.87886101	77.27
3.20	3.41	133.69100200	94.43
3.40	3.57	67.88573140	88.31
3.60	3.73	30.69632525	87.94
3.80	3.88	526.16802270	97.92
4.00	4.03	39.17479975	84.82
4.10	4.11	63.53186139	89.60
4.20	4.18	99.74803915	92.14
4.30	4.26	121.09460950	91.89
4.40	4.33	117.64698290	85.41
4.50	4.40	170.22354580	89.69
4.60	4.48	125.40816730	83.33
4.70	4.55	131.68986100	93.77
4.80	4.62	75.08937231	93.73
4.90	4.69	92.86690524	91.67
5.00	4.76	301.41880340	95.85
5.10	4.83	251.55065560	93.02
5.20	4.91	98.97105791	87.32
5.30	4.98	121.04977620	86.74
5.40	5.05	251.33910890	90.61
5.50	5.12	273.96514560	90.27
5.60	5.18	369.68718610	90.07
5.70	5.25	41.79526057	89.51
5.80	5.32	369.54132150	96.32
6.00	5.46	390.10908680	84.02
6.10	5.53	138.78348350	83.50
6.25	5.63	150.00563580	81.24
6.40	5.73	174.70484910	90.54
6.50	5.79	281.21030990	88.79
6.60	5.86	174.34818480	92.92
6.70	5.93	111.17365160	88.40
6.80	5.99	48.92347902	85.69
6.90	6.06	135.22319900	87.73
7.00	6.12	94.59112578	86.57
7.10	6.19	78.28016234	92.51
7.20	6.25	205.17659940	91.97
7.30	6.32	152.44691430	93.13
7.40	6.38	319.14613050	93.77
7.50	6.45	237.96456490	89.68
7.60	6.51	127.26735050	93.76
7.80	6.64	215.20240630	94.17
8.00	6.77	306.16993160	91.23
8.20	6.89	419.55128210	86.98
8.40	7.02	645.47655310	92.36
8.60	7.14	94.71058644	95.04
8.80	7.26	196.46489270	94.24
9.00	7.39	274.17293230	94.90
9.20	7.51	197.57536240	89.00
9.40	7.63	208.54175410	91.53
9.60	7.75	281.86488450	92.51
9.80	7.87	286.32008240	91.61
10.00	7.99	302.79282650	85.75
10.20	8.11	246.23320070	85.31
10.40	8.23	184.03711670	85.00
10.60	8.35	335.73876620	85.15
10.70	8.41	611.56973110	88.58
10.85	8.49	1061.26653000	87.94
11.00	8.58	267.58535840	86.18
11.20	8.70	251.88644690	86.28
11.45	8.84	314.78647860	83.55
11.60	8.93	401.29145900	89.95
11.80	9.04	226.90499590	82.09