Citation:

PANGAEA.935583

Name: End member modelling of grain size data 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 modeling results from a record retrieved at the modern core of Intermediate Water Brazil Current (IWBC), which 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 Elevation: -842.0 m * Maximum Elevation: -842.0 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	Class	Class		Mahiques, Michel Michaelovitch	end-member modelling (Zhang et al., 2020)	end-member size
2	End member 1	EM1	%	Mahiques, Michel Michaelovitch	end-member modelling (Zhang et al., 2020)	loading
3	End member 2	EM2	%	Mahiques, Michel Michaelovitch	end-member modelling (Zhang et al., 2020)	loading
4	End member 3	EM3	%	Mahiques, Michel Michaelovitch	end-member modelling (Zhang et al., 2020)	loading

License:

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

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

180 data points

Data

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

1 Class	2 EM1 [%]	3 EM2 [%]	4 EM3 [%]
707	0.000117	0.000000	0.000057
595	0.003742	0.000000	0.000353
500	0.007594	0.000000	0.000684
420	0.007304	0.000000	0.000665
354	0.005390	0.000000	0.000517
297	0.004440	0.000000	0.000379
250	0.009045	0.000000	0.000461
210	0.029860	0.000000	0.000141
177	0.075071	0.002652	0.000000
149	0.110787	0.016424	0.000000
125	0.133984	0.033808	0.005733
105	0.143888	0.053376	0.013670
88.4	0.136946	0.073655	0.024182
74.3	0.110699	0.088754	0.035293
62.5	0.075565	0.096390	0.045783
52.6	0.041534	0.096298	0.054823
44.2	0.015139	0.086516	0.059771
37.2	0.001113	0.072510	0.061950
31.3	0.000000	0.057021	0.061662
26.3	0.001906	0.042252	0.058960
22.1	0.008233	0.030613	0.054925
18.6	0.013714	0.023667	0.052368
15.6	0.015893	0.019429	0.048740
13.1	0.014620	0.017266	0.044688
11.06	0.012114	0.017374	0.043643
9.3	0.008520	0.017771	0.042343
7.8	0.004840	0.017358	0.039267
6.57	0.002165	0.017187	0.037182
5.525	0.000309	0.016495	0.034249
4.646	0.000000	0.015569	0.031007
3.905	0.000000	0.014343	0.027322
3.285	0.000000	0.013097	0.023808
2.762	0.000000	0.011697	0.020292
2.322	0.000000	0.010188	0.016919
1.953	0.000000	0.008711	0.013906
1.642	0.000000	0.007255	0.011166
1.381	0.000367	0.005959	0.008844
1.161	0.001026	0.004808	0.006877
0.976	0.001460	0.003805	0.005260
0.821	0.001490	0.002953	0.004026
0.69	0.001067	0.002187	0.003041
0.58	0.000057	0.001425	0.002278
0.489	0.000000	0.000777	0.001785
0.41	0.000000	0.000409	0.000930
0.345	0.000000	0.000000	0.000049