Citation:

PANGAEA.935593

Name: End-member contribution of sediment core NAP 63 - 1
Published: 2021-09-08
License: https://creativecommons.org/licenses/by/4.0/
Keywords: end-member modelling; grain-size; Southwest Atlantic Ocean

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Abstract:

We present the Grain-size end-member contribution variations along core NAP63-1 retrieved at the modern core of Intermediate Water Brazil Current (IWBC), that carries Antarctic Intermediate Water (AAIW) to the north spanning the last 80 kyr. The end-member model was performed with the BASIC-EM (BasEMMA) using grain-size data measured with a Malvern Mastersizer 2000 Laser Analyzer. The number of end-members considered was determined by analyzing the inflection curve of the progressive coefficients of determination.

Keyword(s):

end-member modelling; grain-size; Southwest Atlantic Ocean

Supplement to:

Mahiques, Michel Michaelovitch; Nagai, Renata Hanae; Dias, Gilberto Pereira; Figueira, Rubens César Lopes; Walsh, J P (2022): An 80 kyr record of intermediate‐depth water flow on the western South Atlantic margin. Sedimentology, 69(7), 2740-2752, https://doi.org/10.1111/sed.13016

Related to:

Mahiques, Michel Michaelovitch; Nagai, Renata Hanae; Dias, Gilberto Pereira; Figueira, Rubens César Lopes (2021): Sortable silt paleo-current proxies of sediment core NAP 63 - 1. PANGAEA, https://doi.org/10.1594/PANGAEA.935550

Zhang, Xiaodong; Wang, Hongmin; Xu, Shumei; Yang, Zuosheng (2020): A basic end-member model algorithm for grain-size data of marine sediments. Estuarine, Coastal and Shelf Science, 236, 106656, https://doi.org/10.1016/j.ecss.2020.106656

Project(s):

Geodinâmica de Bacias Sedimentares e implicações para o potencial exploratório (petróleo, gás natural e água subterrânea) (NAP_GEO-SEDex)

Funding:

National Council for Scientific and Technological Development (CNPq), grant/award no. 409749/2016-8: The Atlantic meridional overturning circulation upper arm in the late Quaternary: a Southwest Atlantic view

Sao Paulo Research Foundation (FAPESP), grant/award no. 10/06147-5 : Increase of the research capabilities in oceanography and related sciences in São Paulo State, Brazil

Coverage:

Latitude: -24.838400 * Longitude: -44.318733

Date/Time Start: 2013-02-26T00:00:00 * Date/Time End: 2013-02-26T00:00:00

Minimum DEPTH, sediment/rock: 0.01 m * Maximum DEPTH, sediment/rock: 2.25 m

Event(s):

NAP_63-1 * Latitude: -24.838400 * Longitude: -44.318733 * Date/Time: 2013-02-26T00:00:00 * Elevation: -842.0 m * Location: South Brazil Bight, Santos Basin * Campaign: * Basis: Alpha-Crucis * Method/Device: Piston corer (PC)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	DEPTH, sediment/rock	Depth sed	m	Mahiques, Michel Michaelovitch		Geocode
2	AGE	Age	ka BP	Mahiques, Michel Michaelovitch		Geocode
3	End member 1	EM1	%	Mahiques, Michel Michaelovitch	end-member modelling (Zhang et al., 2020)	contribution
4	End member 2	EM2	%	Mahiques, Michel Michaelovitch	end-member modelling (Zhang et al., 2020)	contribution
5	End member 3	EM3	%	Mahiques, Michel Michaelovitch	end-member modelling (Zhang et al., 2020)	contribution

License:

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

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

339 data points

Data

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

1 Depth sed [m]	2 Age [ka BP]	3 EM1 [%]	4 EM2 [%]	5 EM3 [%]
0.01	1.518	0.0198	0.5154	0.4648
0.03	2.448	0.2873	0.3351	0.3776
0.05	3.369	0.2101	0.3308	0.4591
0.07	4.283	0.1979	0.4348	0.3672
0.09	5.240	0.2217	0.5848	0.1935
0.11	6.269	0.1237	0.4149	0.4614
0.13	7.441	0.1851	0.4776	0.3373
0.15	8.160	0.0401	0.2822	0.6778
0.17	8.901	0.0854	0.3610	0.5535
0.19	9.764	0.0722	0.6005	0.3274
0.21	10.630	0.0537	0.4993	0.4470
0.23	11.426	0.0311	0.6184	0.3504
0.25	12.506	0.0485	0.5011	0.4504
0.27	13.490	0.0173	0.5672	0.4155
0.29	14.538	0.0321	0.3158	0.6521
0.31	15.715	0.1741	0.3424	0.4836
0.33	16.832	0.1480	0.3569	0.4951
0.35	17.751	0.1109	0.5043	0.3848
0.37	18.702	0.1995	0.2877	0.5128
0.39	19.595	0.1930	0.4137	0.3933
0.41	20.549	0.1529	0.2132	0.6339
0.43	21.534	0.2311	0.3339	0.4351
0.45	22.241	0.3052	0.1322	0.5626
0.47	22.951	0.1058	0.0891	0.8051
0.49	24.346	0.2091	0.2746	0.5162
0.51	26.389	0.1386	0.4477	0.4138
0.53	28.422	0.1582	0.4539	0.3880
0.55	29.266	0.1752	0.2282	0.5966
0.57	30.025	0.2126	0.3689	0.4185
0.59	30.823	0.1825	0.1536	0.6638
0.61	31.715	0.2713	0.3604	0.3683
0.63	32.552	0.2518	0.4041	0.3442
0.65	33.321	0.3425	0.2490	0.4085
0.67	34.184	0.1745	0.2846	0.5409
0.69	34.963	0.3051	0.3693	0.3256
0.71	35.816	0.1099	0.5006	0.3894
0.73	36.677	0.0786	0.5237	0.3978
0.75	37.259	0.1964	0.6868	0.1167
0.77	37.935	0.0794	0.5629	0.3577
0.79	38.547	0.2548	0.5025	0.2426
0.81	39.014	0.2747	0.4632	0.2621
0.83	39.454	0.2191	0.4258	0.3550
0.85	39.975	0.1081	0.4661	0.4258
0.87	40.479	0.0294	0.4621	0.5085
0.89	40.948	0.0788	0.6470	0.2742
0.91	41.452	0.0758	0.7356	0.1886
0.93	41.944	0.1043	0.7348	0.1609
0.95	42.446	0.0000	0.6282	0.3718
0.97	42.982	0.0862	0.7531	0.1608
0.99	43.421	0.1548	0.5916	0.2537
1.01	43.819	0.0000	0.2234	0.7766
1.03	44.257	0.1684	0.4556	0.3760
1.05	44.674	0.1332	0.5147	0.3521
1.07	45.054	0.1014	0.7368	0.1617
1.09	45.462	0.0878	0.6581	0.2541
1.11	45.909	0.0515	0.7567	0.1918
1.13	46.318	0.0965	0.8192	0.0843
1.15	46.774	0.0656	0.9344	0.0000
1.17	47.221	0.1852	0.7299	0.0849
1.19	47.653	0.2364	0.6124	0.1512
1.21	48.114	0.1949	0.6124	0.1928
1.23	48.539	0.0487	0.4695	0.4818
1.25	48.989	0.0000	0.4965	0.5035
1.27	49.449	0.0131	0.3732	0.6137
1.29	49.866	0.0000	0.2195	0.7805
1.31	50.348	0.0000	0.4336	0.5664
1.33	50.815	0.0000	0.3708	0.6292
1.35	51.395	0.0000	0.7121	0.2879
1.37	51.962	0.0450	0.3739	0.5811
1.39	52.505	0.0302	0.5924	0.3774
1.41	53.042	0.0182	0.5931	0.3887
1.43	53.574	0.0000	0.4482	0.5518
1.45	54.228	0.0009	0.2516	0.7476
1.47	54.868	0.0000	0.3681	0.6319
1.49	55.517	0.0135	0.3851	0.6014
1.51	56.217	0.0000	0.3989	0.6011
1.53	56.902	0.0457	0.0000	0.9543
1.55	57.527	0.0319	0.3235	0.6447
1.57	58.147	0.0000	0.1753	0.8247
1.59	58.752	0.0645	0.1549	0.7806
1.61	59.327	0.1340	0.7373	0.1286
1.63	59.853	0.0987	0.8147	0.0866
1.65	60.396	0.0160	0.8108	0.1732
1.67	60.918	0.0415	0.9017	0.0568
1.69	61.474	0.0367	0.8238	0.1395
1.71	62.051	0.1203	0.8386	0.0411
1.73	62.574	0.0748	0.8941	0.0311
1.75	63.129	0.0664	0.8572	0.0764
1.77	63.697	0.1402	0.7428	0.1170
1.79	64.252	0.1920	0.6747	0.1333
1.81	64.830	0.1662	0.6796	0.1542
1.83	65.374	0.2251	0.6446	0.1302
1.85	65.906	0.1106	0.7569	0.1325
1.87	66.430	0.0867	0.6583	0.2550
1.89	67.007	0.0085	0.8167	0.1748
1.91	67.580	0.0652	0.7125	0.2223
1.93	68.139	0.1645	0.7566	0.0789
1.95	68.833	0.0653	0.8035	0.1313
1.97	69.568	0.1129	0.6883	0.1988
1.99	70.238	0.0994	0.5537	0.3469
2.01	70.882	0.1914	0.5918	0.2168
2.03	71.521	0.1990	0.6836	0.1174
2.05	72.234	0.1851	0.6335	0.1814
2.07	72.934	0.0399	0.7521	0.2080
2.09	73.575	0.0144	0.4526	0.5330
2.11	74.259	0.1659	0.6173	0.2168
2.13	74.936	0.1804	0.6040	0.2156
2.15	75.603	0.1093	0.5067	0.3840
2.17	76.269	0.1635	0.6027	0.2338
2.19	76.936	0.0755	0.5602	0.3643
2.21	77.603	0.0484	0.4152	0.5364
2.23	77.936	0.1480	0.6351	0.2169
2.25	78.269	0.1141	0.4310	0.4549