Citation:

2005PA001215

Name: (Table 1) Age determination of sediment cores
Published: 2006
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

Two sediment cores from the western Arabian Sea, NIOP905 and 74KL, were analyzed to determine sea surface temperature (SST) variations over the last 23 kyr. Two organic molecular SST proxies were used, the well-established UK'37 based on long-chain unsaturated ketones synthesized by haptophyte algae and the newly proposed TEX86 derived from the membrane lipids of Crenarchaeota. Comparison of NIOP905 and 74KL core top data with present-day SST (0-10 m) values indicates that both proxies yield temperatures similar to local annual mean SSTs. However, TEX86 and UK'37 SST down-core records derived from the same cores differ in magnitude and phasing. The alkenone SST record of NIOP905 shows small changes in SST (~0.5°C) over the last 23 kyr, while that of core 74KL shows a ~2°C increase from the Last Glacial Maximum (LGM) (23-19 calendar (cal) kyr B.P.) through the Holocene (the last 11.5 cal kyr B.P.) synchronous with changes in the Northern Hemisphere. In contrast, the TEX86 records of both cores show a large increase in SST from 22°-23°C in the LGM to 28°-30°C during Termination I (19-11.5 cal kyr B.P.), decreasing to present-day annual means of ~26°C. A cold phase between 14.5 and 12 cal kyr B.P. that may correspond to the Antarctic cold reversal is also observed. This implies a Southern Hemisphere control on tropical SST reconstructed by the TEX86, possibly related to SW monsoon. Our results suggest that the application of both TEX86 and UK'37 give different but complementary information on SST developments in past marine environments.

Further details:

Ivanochko, Tara S (2005): Sub-orbital variations in the intensity of the Arabian Sea monsoon. Ph.D. thesis, University of Edinburgh, Edinburgh, U.K., 230 pp

Ivanova, E (1999): Late Quaternary monsoon history and paleoproductivity of the western Arabian Sea. Ph.D. thesis, Free University, Amsterdam, 172 pp

Jung, S J A; Davies, Gareth R; Ganssen, Gerald M; Kroon, Dick (2002): Decadal-centennial scale monsoon variations in the Arabian Sea during the Early Holocene. Geochemistry, Geophysics, Geosystems, 3(10), 1060, https://doi.org/10.1029/2002GC000348

Sirocko, Frank; Sarnthein, Michael; Erlenkeuser, Helmut; Lange, Heinz; Arnold, Maurice; Duplessy, Jean-Claude (1993): Century-scale events in monsoonal climate over the past 24,000 years. Nature, 364, 322-324, https://doi.org/10.1038/364322a0

Coverage:

Median Latitude: 12.543830 * Median Longitude: 54.648500 * South-bound Latitude: 10.766660 * West-bound Longitude: 51.950000 * North-bound Latitude: 14.321000 * East-bound Longitude: 57.347000

Date/Time Start: 1986-05-24T00:00:00 * Date/Time End: 1993-02-13T00:00:00

Minimum DEPTH, sediment/rock: 0.0750 m * Maximum DEPTH, sediment/rock: 4.8025 m

Event(s):

NIOP-C2_905_PC * Latitude: 10.766660 * Longitude: 51.950000 * Date/Time: 1993-02-13T00:00:00 * Elevation: -1575.0 m * Campaign: * Basis: Tyro * Method/Device: Piston corer (PC)

SO42-74KL (KL-74, AS-12) * Latitude: 14.321000 * Longitude: 57.347000 * Date/Time: 1986-05-24T00:00:00 * Elevation: -3212.0 m * Recovery: 3.16 m * Location: Arabian Sea * Campaign: * Basis: * Method/Device: Kasten corer (KAL)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event
2	DEPTH, sediment/rock	Depth sed	m			Geocode
3	Depth, top/min	Depth top	m	Huguet, Carme
4	Depth, bottom/max	Depth bot	m	Huguet, Carme
5	Age, dated	Age dated	ka	Huguet, Carme	Age, 14C AMS
6	Age, dated standard error	Age std e	±	Huguet, Carme	Age, 14C AMS	no values indicates that analytical errors are not available for these data. Therefore we assumed ±50 years for the analytical determination
7	Reservoir effect/correction	Res effect	a	Huguet, Carme		the regional reservoir age (Delta R) for the western Arabian Sea was used according to Southon et al. (2002)
8	Reservoir effect/correction, standard deviation	Res effect std dev	±	Huguet, Carme		the regional reservoir age (Delta R) for the western Arabian Sea was used according to Southon et al. (2002)
9	Age, minimum/young	Age min	ka	Huguet, Carme	Age, 14C calibrated	2 sigma range, ka BP
10	Age, maximum/old	Age max	ka	Huguet, Carme	Age, 14C calibrated	2 sigma range, ka BP
11	Age, minimum/young	Age min	ka	Huguet, Carme	Age, 14C calibrated	1 sigma range, ka BP
12	Age, maximum/old	Age max	ka	Huguet, Carme	Age, 14C calibrated	1 sigma range, ka BP
13	Calendar age	Cal age	ka BP	Huguet, Carme	Age, 14C calibrated	mean
14	Reference/source	Reference		Huguet, Carme

License:

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

Size:

320 data points

Data

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

1 Event	2 Depth sed [m]	3 Depth top [m]	4 Depth bot [m]	5 Age dated [ka] (Age, 14C AMS)	6 Age std e [±] (no values indicates that anal...)	7 Res effect [a] (the regional reservoir age (D...)	8 Res effect std dev [±] (the regional reservoir age (D...)	9 Age min [ka] (2 sigma range, ka BP, Age, 14...)	10 Age max [ka] (2 sigma range, ka BP, Age, 14...)	11 Age min [ka] (1 sigma range, ka BP, Age, 14...)	12 Age max [ka] (1 sigma range, ka BP, Age, 14...)	13 Cal age [ka BP] (mean, Age, 14C calibrated)	14 Reference
NIOP-C2_905_PC	0.2000			1.410		190	25	0.664	0.890	0.691	0.820	0.7555	Ivanova (1999)
NIOP-C2_905_PC	0.4000			2.420		190	25	1.692	1.972	1.760	1.905	1.8325	Ivanova (1999)
NIOP-C2_905_PC	0.8000			4.050		190	25	3.656	3.977	3.728	3.894	3.8110	Ivanova (1999)
NIOP-C2_905_PC	1.2000			5.410		190	25	5.458	5.703	5.520	5.645	5.5825	Ivanova (1999)
NIOP-C2_905_PC	1.6725	1.670	1.675	6.653	0.050	190	25	6.812	7.135	6.874	7.042	6.9580	Jung et al. (2002)
NIOP-C2_905_PC	1.8325	1.830	1.835	7.125	0.050	190	25	7.332	7.552	7.398	7.501	7.4495	Jung et al. (2002)
NIOP-C2_905_PC	2.0000			7.620	0.045	190	25	7.776	7.997	7.839	7.944	7.8915	Ivanova (1999)
NIOP-C2_905_PC	2.5025	2.495	2.510	8.620	0.050	190	25	8.892	9.240	8.972	9.117	9.0445	Jung et al. (2002)
NIOP-C2_905_PC	2.9125	2.910	2.915	9.748	0.050	190	25	10.261	10.538	10.355	10.505	10.4300	Jung et al. (2002)
NIOP-C2_905_PC	3.1375			10.371	0.047	190	25	11.101	11.256	11.146	11.214	11.1800	Ivanochko (2005)
NIOP-C2_905_PC	3.2000			10.500		190	25	11.174	11.433	11.210	11.346	11.2780	Ivanova (1999)
NIOP-C2_905_PC	3.4000			11.100		190	25	12.236	12.709	12.434	12.632	12.5330	Ivanova (1999)
NIOP-C2_905_PC	3.6000			12.000		190	25	13.162	13.383	13.215	13.314	13.2645	Ivanova (1999)
NIOP-C2_905_PC	3.6125			12.131	0.062	190	25	13.247	13.556	13.297	13.431	13.3640	Ivanochko (2005)
NIOP-C2_905_PC	3.7625			12.895	0.052	190	25	14.002	14.602	14.044	14.287	14.1655	Ivanochko (2005)
NIOP-C2_905_PC	3.9125			13.975	0.055	190	25	15.518	6.300	15.688	16.067	15.8775	Ivanochko (2005)
NIOP-C2_905_PC	4.0000			14.190		190	25	15.811	16.593	15.978	16.366	16.1720	Ivanova (1999)
NIOP-C2_905_PC	4.1125			14.701	0.061	190	25	16.385	17.197	16.620	17.029	16.8245	Ivanochko (2005)
NIOP-C2_905_PC	4.8025			20.580	0.114	190	25	23.598	24.298	23.778	24.109	23.9435	Ivanochko (2005)
SO42-74KL	0.0750			1.230	0.060	190	25	0.509	0.711	0.553	0.656	0.6045	Sirocko et al. (1993)
SO42-74KL	0.3500			3.350	0.100	190	25	2.736	3.229	2.825	3.096	2.9605	Sirocko et al. (1993)
SO42-74KL	0.5500			5.540	0.090	190	25	5.539	5.922	5.623	5.832	5.7275	Sirocko et al. (1993)
SO42-74KL	0.7000			7.850	0.090	190	25	7.941	8.320	8.004	8.213	8.1085	Sirocko et al. (1993)
SO42-74KL	0.8000			8.700	0.120	190	25	8.831	9.440	8.989	9.298	9.1435	Sirocko et al. (1993)
SO42-74KL	0.9750			10.580	0.120	190	25	11.177	11.927	11.245	11.670	11.4575	Sirocko et al. (1993)
SO42-74KL	1.1500			11.780	0.130	190	25	12.881	13.285	12.962	13.189	13.0755	Sirocko et al. (1993)
SO42-74KL	1.2750			13.060	0.150	190	25	14.049	15.064	14.220	14.816	14.5180	Sirocko et al. (1993)
SO42-74KL	1.4250			14.200	0.170	190	25	15.617	16.763	15.889	16.471	16.1800	Sirocko et al. (1993)
SO42-74KL	1.6000			15.880	0.170	190	25	18.096	18.896	18.501	18.855	18.6780	Sirocko et al. (1993)
SO42-74KL	1.6500			16.260	0.170	190	25	18.668	19.244	18.781	19.033	18.9070	Sirocko et al. (1993)
SO42-74KL	1.8000			17.130	0.180	190	25	19.344	20.072	19.509	19.846	19.6775	Sirocko et al. (1993)
SO42-74KL	1.9750			20.580	0.260	190	25	22.990	24.594	23.590	24.288	23.9390	Sirocko et al. (1993)