Citation:

2002PA000814

Name: Stable isotope record of planktonic foraminifera of sediment core TR163-19
Published: 2003
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

Stable isotope data from eastern equatorial Pacific (EEP) core TR163-19 (2°15'N, 90°57'W, 2348 m) are presented for the surface-dwelling foraminifers Globigerinoides ruber and G. sacculifer and thermocline-dwelling Globorotalia menardii and Neogloboquadrina dutertrei. Using species-specific normalization factors derived from experimental and plankton tow data, we reconstruct a 360 kyr record of water column hydrography across the past three glacial cycles. We demonstrate that G. ruber maintains a mixed layer habitat throughout the entire record, while G. sacculifer records a mixture of thermocline and mixed layer conditions and G. menardii and N. dutertrei record thermocline properties. We conclude that G. sacculifer is not appropriate for paleoceanographic applications in regions with steep vertical hydrographic gradients. Results suggest that this region of the EEP had a thicker mixed layer and deeper d13CDIC boundary between the surface and equatorial undercurrent during the last two glacial periods. A shift in N. dutertrei and G. sacculifer geochemistry prior to ~185 kyr suggests water column structure and chemocline gradients changed, possibly due to a shift in the position of the undercurrent relative to this site. The timing and magnitude of glacial-interglacial d13C variations between species indicates that near-surface carbon chemistry is controlled by changes in productivity, atmospheric circulation, and advected intermediate water sources north of the Antarctic polar front. These results demonstrate that when properly calibrated for species differences, multispecies geochemical data sets can be invaluable for reconstructing water column structure and properties in the past.

Other version:

Spero, Howard J; Mielke, Koreen M; Kalve, Erica M; Lea, David W; Pak, Dorothy K (2003): NOAA/WDS Paleoclimatology - Equatorial Pacific Multispecies Foraminifera Stable Isotope Data. NOAA National Centers for Environmental Information, https://doi.org/10.25921/YZYC-KR22

Coverage:

Latitude: 2.258000 * Longitude: -90.952000

Minimum DEPTH, sediment/rock: 0.01 m * Maximum DEPTH, sediment/rock: 10.29 m

Event(s):

TR163-19 * Latitude: 2.258000 * Longitude: -90.952000 * Elevation: -2348.0 m * Method/Device: Piston corer (PC)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	DEPTH, sediment/rock	Depth sed	m			Geocode
2	AGE	Age	ka BP			Geocode
3	Globorotalia menardii, δ13C	G. menardii δ13C	‰ PDB	Spero, Howard J	Isotope ratio mass spectrometry	with respect to VPDB
4	Globigerinoides ruber, δ13C	G. ruber δ13C	‰ PDB	Spero, Howard J	Isotope ratio mass spectrometry	size fraction 250-350 µm, with respect to VPDB
5	Globigerinoides sacculifer, δ13C	G. sacculifer δ13C	‰ PDB	Spero, Howard J	Isotope ratio mass spectrometry	size fraction 250-350 µm, with respect to VPDB
6	Neogloboquadrina dutertrei, δ13C	N. dutertrei δ13C	‰ PDB	Spero, Howard J	Isotope ratio mass spectrometry	with respect to VPDB
7	Globorotalia menardii, δ18O	G. menardii δ18O	‰ PDB	Spero, Howard J	Isotope ratio mass spectrometry	with respect to VPDB
8	Globigerinoides ruber, δ18O	G. ruber δ18O	‰ PDB	Spero, Howard J	Isotope ratio mass spectrometry	size fraction 250-350 µm, with respect to VPDB
9	Globigerinoides sacculifer, δ18O	G. sacculifer δ18O	‰ PDB	Spero, Howard J	Isotope ratio mass spectrometry	size fraction 250-350 µm, with respect to VPDB
10	Neogloboquadrina dutertrei, δ18O	N. dutertrei δ18O	‰ PDB	Spero, Howard J	Isotope ratio mass spectrometry	with respect to VPDB
11	Globigerinoides sacculifer, δ13C	G. sacculifer δ13C	‰ PDB	Spero, Howard J	Isotope ratio mass spectrometry	size fraction >500 µm, with respect to VPDB
12	Globigerinoides sacculifer, δ18O	G. sacculifer δ18O	‰ PDB	Spero, Howard J	Isotope ratio mass spectrometry	size fraction >500 µm, with respect to VPDB

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Size:

1154 data points

Data

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

1 Depth sed [m]	2 Age [ka BP]	3 G. menardii δ13C [‰ PDB] (with respect to VPDB)	4 G. ruber δ13C [‰ PDB] (size fraction 250-350 µm, wit...)	5 G. sacculifer δ13C [‰ PDB] (size fraction 250-350 µm, wit...)	6 N. dutertrei δ13C [‰ PDB] (with respect to VPDB)	7 G. menardii δ18O [‰ PDB] (with respect to VPDB)	8 G. ruber δ18O [‰ PDB] (size fraction 250-350 µm, wit...)	9 G. sacculifer δ18O [‰ PDB] (size fraction 250-350 µm, wit...)	10 N. dutertrei δ18O [‰ PDB] (with respect to VPDB)	11 G. sacculifer δ13C [‰ PDB] (size fraction >500 µm, with r...)	12 G. sacculifer δ18O [‰ PDB] (size fraction >500 µm, with r...)
0.01	1.1	1.75	1.52	1.76	1.88	-0.22	-2.07	-0.95	-0.02
0.04	1.9	1.87	1.54		1.97	-0.39	-2.27		-0.06
0.09	3.3	1.75	1.86	1.89	2.21	-0.22	-2.30	-1.26	-0.15
0.14	4.7	1.82	1.81	1.82	1.92	-0.16	-2.11	-1.09	0.01
0.19	6.1	1.96	1.91	1.46	1.96	-0.57	-2.41	-0.59	0.06
0.24	7.5	1.69	1.60	1.64	1.75	-0.05	-2.10	-0.12	0.09
0.29	8.9	1.43	1.48	1.65	1.65	0.18	-2.10	0.00	0.22
0.34	10.2	1.32	1.55		1.79	0.38	-1.78		0.26	2.43	-1.43
0.39	11.6	1.27	1.44	1.37	1.69	0.20	-1.81	0.29	0.37
0.44	13.0	1.36	1.28		1.73	0.46	-1.01		0.55	2.54	-1.22
0.49	14.4	1.22	1.17	1.45	1.66	0.52	-1.12	0.34	0.90
0.54	15.8	1.22	1.53		1.47	1.32	-1.22		1.25	2.44	-0.72
0.59	17.2	1.43	1.08	1.93	1.65	1.10	-0.72	0.14	1.11
0.64	18.5	1.81	1.38		1.69	0.85	-0.51		0.99	2.20	-0.53
0.69	19.9	1.85	1.37	1.64	1.94	1.08	-0.69	0.13	1.11
0.74	20.7	1.88	1.04		1.88	0.74	-0.37		1.18	2.46	-0.50
0.79	21.6	2.26	1.31	1.73	1.93	0.57	-0.71	0.24	1.04
0.84	22.5	2.12	1.19		1.82	0.66	-0.78		1.24	2.47	-0.66
0.89	23.5	2.39	1.28	1.94	1.97	0.69	-0.79	-0.02	1.18
0.94	24.4	2.24	1.28		1.94	0.46	-0.95		1.09	2.67	-0.71
0.99	25.3	2.16	1.27	1.47	1.83	0.68	-0.81	-0.37	1.13
1.04	26.2	2.23	1.29		2.07	0.66	-1.04		0.99	2.53	-0.69
1.09	27.1	2.23	1.47	1.55	1.87	0.89	-0.77	-0.15	1.13
1.14	28.0	2.18	1.54		1.92	0.48	-1.23		1.01	2.56	-0.87
1.19	29.1	2.36	1.32	1.48	1.95	0.39	-0.93	-0.14	1.12
1.24	30.2	2.04	1.25		2.07	0.84	-1.05		0.78
1.29	31.3	2.41	1.35	1.52	1.81	0.02	-0.86	-0.40	0.98
1.34	32.3		1.24		1.88		-0.66		0.71
1.39	33.4	2.36	1.32	1.54	1.76	0.33	-1.14	-0.31	0.86
1.44	34.5		1.31		1.89		-0.94		0.60
1.49	35.6	2.30	1.40	1.51	2.01	0.13	-1.15	-0.58	0.52
1.54	36.7		1.40		1.82		-1.14		0.91
1.59	37.8	2.46	1.52	1.53	1.97	0.13	-0.78	-0.51	0.71
1.64	38.9	2.56	1.38		1.95	-0.17	-1.07		0.80
1.69	40.0		1.41	1.68			-0.86	-0.62
1.74	41.0	2.26	1.44		1.89	0.12	-0.95		0.73
1.79	42.1		1.29	1.41			-1.06	-0.36
1.84	43.2	2.05	1.38		1.87	0.31	-1.21		0.66
1.89	44.3		1.37	1.48			-0.96	-0.25
1.94	45.4	2.29	1.01		1.88	-0.07	-1.20		0.68
1.99	46.5		1.34	1.47			-0.89	-0.37
2.04	47.6	2.24	1.24		1.87	0.17	-1.27		0.64
2.09	48.7	2.17	1.31	1.10	1.83	-0.32	-1.13	-0.53	0.63
2.14	49.7		1.51	1.47			-1.01	-0.37
2.20	49.7	2.11	1.25		1.94	-0.10	-0.99		0.64
2.24	51.9	2.04	0.97		1.91	0.17	-1.18		0.20
2.29	53.0		1.25	1.10			-1.38	-0.53
2.34	56.0	2.04	1.07		1.80	-0.25	-1.11		0.41
2.39	59.0		1.29				-1.21
2.44	60.3	1.87	1.26		1.66	0.45	-0.83		0.75
2.49	61.5		1.40	1.50			-0.88	-0.27
2.54	62.8	2.11	1.19		1.86	0.16	-1.15		0.65
2.59	64.0		1.36	1.56			-0.86	-0.19
2.64	65.4	2.09	1.23		2.00	0.41	-1.10		0.52
2.69	66.8		1.52	1.14			-1.00	-0.19
2.74	68.2	2.31	1.20		1.93	0.12	-1.24		0.70
2.79	69.6		1.39	1.56			-0.89	-0.45
2.84	71.0	2.41	1.21		1.88	-0.06	-1.47		0.80
2.89	73.3		1.74	1.89			-1.47	-1.00
2.94	75.5	2.15	1.82		2.12	0.06	-1.92		0.48
2.99	77.8		1.82	1.90			-1.71	-1.33
3.04	80.0	2.21	1.56		2.00	-0.19	-1.86		0.48
3.09	81.7		1.57	1.70			-1.63	-0.80
3.14	83.3	2.16	1.58		1.89	0.20	-1.35		0.75
3.19	85.0		1.75	1.41			-1.17	-0.72
3.24	86.5	2.27	1.70		1.95	-0.07	-1.51		0.70
3.29	88.0		1.70	1.71			-1.46	-0.87
3.34	89.5	2.04	1.60		1.64	-0.27	-1.51		0.46
3.39	91.0		1.71	1.56			-1.40	-1.02
3.44	94.0	2.10	1.57		1.95	-0.45	-1.84		0.55
3.49	97.0		1.57	1.68			-1.77	-1.09
3.54	100.0	2.16	1.52		1.95	-0.50	-2.02		0.32
3.59	103.3		1.53	1.61			-1.67	-1.20
3.64	106.7	1.96	1.45		1.89	-0.59	-1.74		0.19
3.69	110.0		1.60	1.50			-1.09	-1.14
3.74	112.0	1.90	1.47		1.77	-0.21	-2.17		0.20
3.79	114.0		1.57	1.39			-2.04	-1.14
3.84	116.0	2.06	1.27		1.59	-0.87	-2.09		-0.13
3.89	118.0	1.85	1.63	1.65	1.92	-0.93	-2.36	-1.43	-0.81
3.94	120.0	1.76	1.17		1.80	-0.92	-2.45		-0.66
3.99	122.0	1.56	1.55	1.31	1.71	-0.83	-2.54	-1.25	-0.83
4.04	128.0	1.34	1.10		1.32	-0.11	-1.61		0.01
4.09	129.0	0.90	1.03	1.04	1.40	0.32	-1.21	-0.45	-0.02
4.14	130.3	0.98	0.81		1.11	0.37	-1.07		0.60
4.19	131.0	1.02	1.13	1.01	1.41	0.28	-0.72	-0.57	-0.11
4.23	132.3	1.03	0.93		1.08	0.96	-1.14		0.87
4.29	133.6	1.50	1.12	1.23	1.56	0.50	-0.66	0.15	0.67
4.34	134.9	1.58	0.90		1.80	0.61	-0.50		0.97
4.39	136.0	1.48	1.00	1.12	1.79	0.46	-0.20	-0.05	0.60
4.44	137.4	1.66	0.64		1.53	0.44	-0.99		1.08
4.49	138.9	1.83	0.98	1.34	1.75	0.26	-0.91	-0.38	0.64
4.54	140.3	1.81	1.01		1.76	0.71	-0.77		0.70
4.59	141.7		1.14	1.24			-0.88	-0.36
4.64	143.1		1.20		1.66		-0.85		0.75
4.68	144.6	1.81	0.99	1.10		0.71	-0.88	-0.47
4.74	146.0		0.77		1.72		-1.10		0.82
4.78	148.0	1.95	1.05	0.83		0.69	-0.77	-0.65
4.84	150.0		0.87		1.59		-0.66		0.81
4.88	152.0	1.97	1.33	0.76		0.59	-0.46	-0.16
4.94	154.5		0.91		1.70		-0.90		0.73
4.98	157.1	1.70	0.99	0.96		0.43	-0.54	-0.75
5.04	159.6		0.84		1.50		-0.89		0.40
5.08	162.1	1.81	1.28	0.86		0.62	-0.69	-0.60
5.13	164.2		1.01		1.62		-1.03		0.44
5.18	167.2	1.76	1.22	1.12		0.44	-1.00	-0.55
5.24	169.7		0.95		1.50		-1.31		0.34
5.28	172.0	2.00	1.09	1.01		0.02	-1.31	-0.75
5.34	174.0		1.03		1.46		-1.24		0.50
5.38	176.0	1.78	1.02	0.96		0.33	-1.18	-0.83
5.44	178.0		1.01		1.55		-1.21		0.37
5.48	180.0	1.81	1.08	1.23		0.45	-0.97	-1.11
5.54	182.0		0.95		1.63		-1.01		0.56
5.58	183.5	2.20	1.22	1.27		-0.21	-0.99	-1.06
5.64	185.0		1.13		1.80		-1.24		-0.27
5.69	186.5	2.13	1.32	1.38	2.07	0.28	-1.21	-1.13	-0.12
5.74	188.0		1.62				-1.61
5.79	192.0	2.12	1.60	2.00	2.15	0.09	-1.65	-1.56	-0.43
5.84	196.0		1.55				-2.07
5.89	197.8	1.88	1.71	1.72	2.08	-0.27	-1.82	-1.47	-0.53
5.94	199.6		1.42				-1.76
5.99	201.4	2.04	1.67	1.50	2.05	0.00	-1.29	-0.97	-0.37
6.04	203.2		1.37				-1.54
6.09	205.0	2.01	1.88	1.63	1.94	-0.07	-1.02	-1.03	-0.31
6.14	208.7		1.49				-1.48
6.19	212.3	2.05	1.52	1.67	1.93	-0.45	-1.54	-1.13	-0.34
6.24	216.0		1.34				-2.03
6.29	217.5	1.95	1.36	1.70	1.79	-0.35	-1.70	-1.35	-0.50
6.34	219.0		1.33				-1.69
6.39	220.5	1.68	1.18	1.45	1.91	0.08	-1.35	-1.16	-0.33
6.44	222.0		1.34				-1.47
6.49	223.5	1.68	1.27	1.34	1.99	0.46	-1.04	-0.58	-0.05
6.54	225.0		1.26				-0.77
6.59	226.5	1.42	1.32	1.46	1.75	0.55	-1.28	-1.23	-0.16
6.64	228.0		1.28				-0.93
6.69	230.5	1.85	1.12	1.54	2.00	0.40	-1.07	-0.73	-0.26
6.74	233.0		1.15				-0.79
6.79	235.5	1.81	1.54	1.31	1.87	0.08	-1.92	-0.74	-0.27
6.84	238.0		1.46				-2.20
6.89	240.0	1.45	1.51	1.59	1.70	0.32	-2.04	-1.25	-0.41
6.94	242.0		0.99				-1.60
6.99	244.0	1.62	1.10	1.26	1.80	0.07	-1.13	-0.88	-0.28
7.04	245.3		1.16				-1.14
7.09	246.0	1.65	1.24	1.31	1.72	0.51	-0.66	-0.64	-0.06
7.14	246.7		1.07				-0.58
7.19	247.3	1.43	1.16	1.28	1.65	0.83	-0.83	-0.42	-0.06
7.24	248.0		0.93				-0.54
7.29	248.7	1.69	1.25	1.01	1.91	0.55	-0.57	-0.05	0.18
7.34	249.3		0.87				-0.61
7.39	250.0	1.86	1.01	1.06	1.89	0.19	-0.51	-0.30	0.20
7.43	251.1		0.93				-0.91
7.44	251.4		0.83				-0.82
7.49	252.8	1.65	0.74	1.01	1.83	0.25	-0.56	-0.22	-0.04
7.54	254.2		0.72				-0.94
7.59	255.6	1.47	0.96	1.08	1.52	0.52	-0.75	-0.68	0.24
7.64	257.0		0.77				-1.16
7.69	259.4	1.66	1.11	1.15	1.55	0.67	-0.41	-0.63	0.41
7.74	261.8		0.98				-0.46
7.79	264.2	1.79	0.99	1.33	1.83	0.70	-0.64	-0.40	0.41
7.84	266.6		1.10				-0.67
7.89	269.0	1.91	1.22	1.35	2.04	0.58	-0.34	-0.42	0.27
7.94	272.6		1.40	1.25			-0.75	-1.07
7.99	276.2	1.54	1.11	1.33	1.91	0.41	-0.94	-0.51	0.12
8.04	279.8		0.91				-0.82
8.09	283.4	2.00	1.51	1.75	2.12	0.08	-1.27	-0.71	-0.22
8.14	287.0		1.44				-1.46
8.19	288.3	2.08	1.64	1.69	1.98	-0.53	-1.23	-1.29	-0.21
8.24	289.7		1.28				-1.31
8.29	291.0	1.92	1.23	1.81	1.98	-0.02	-1.13	-0.84	0.01
8.34	292.3		1.26				-1.34
8.39	293.7	1.90	1.35	1.65	2.09	-0.01	-0.85	-0.44	-0.12
8.44	295.0		1.40				-1.10
8.49	296.3	1.92	1.10	1.65	1.86	0.22	-0.69	-0.56	0.07
8.54	297.7		1.39				-1.09
8.57	299.0	1.93	1.32	1.70	1.89	-0.55	-0.62	-0.56	0.07
8.64	301.8		1.48				-1.04
8.69	304.5	1.67	1.23	1.41	1.91	-0.13	-0.90	-0.77	-0.32
8.74	307.3		1.42				-1.08
8.79	310.0	2.13	1.45	1.65	2.06	-0.55	-1.68	-1.02	-0.46
8.84	311.5		1.62				-1.58
8.89	313.0	1.56	1.66	1.60	1.91	-0.32	-1.29	-1.41	-0.43
8.94	314.5		1.34				-1.51
8.99	316.0	1.44	1.50	1.37	1.64	0.23	-1.44	-1.39	-0.52
9.04	317.5		1.35				-1.66
9.09	319.0	1.79	1.40	1.57	1.97	0.45	-1.33	-1.25	-0.09
9.14	320.5		1.31				-1.58
9.19	322.0	1.58	1.23	1.71	1.84	0.08	-1.36	-1.29	-0.36
9.24	323.5		1.35				-1.78
9.29	325.0	1.63	1.81	1.80	1.81	-0.03	-1.67	-1.42	-0.59
9.34	326.5		1.33		1.70		-1.85		-0.50
9.39	328.0	1.69	1.57	1.55		-0.25	-2.05	-0.88
9.44	329.5		1.48				-1.77
9.49	331.0	1.63	1.53	1.41	1.68	-0.18	-2.03	-1.41	-0.66
9.54	334.5		1.16				-2.00
9.59	338.0	1.30	0.75	1.18	1.20	0.03	-1.24	-0.94	-0.14
9.64	338.6		0.80				-0.94
9.69	339.3	1.60	0.81	0.91	1.17	0.18	-0.60	-0.39	0.45
9.74	339.9		0.87				-0.86
9.79	340.5	1.41	0.72	1.20	1.17	0.53	-0.35	-0.21	0.65
9.84	341.1		0.85				-0.88
9.89	341.8	1.28	0.61	1.12	1.30	0.79	-0.46	-0.44	0.93
9.94	342.4		0.90				-0.28
9.99	343.0	1.61	0.50	1.35	1.34	0.87	-0.18	-0.01	0.87
10.04	346.0		1.07				-0.46
10.09	349.0	1.82	0.72	1.33	1.51	0.82	-0.67	-0.07	0.72
10.14	352.0		1.23				-0.42
10.19	355.0	1.86	1.34	1.40	1.64	0.69	-0.49	-0.14	0.72
10.24	358.0		1.12				-0.62
10.29	361.0	1.64	1.10	1.54	1.68	0.57	-0.76	-0.36	0.45