Huguet, Carme; Kim, Jung-Hyun; Sinninghe Damsté, Jaap S; Schouten, Stefan (2006): (Table 1) Age determination of sediment cores [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.834601, Supplement to: Huguet, C et al. (2006): Reconstruction of sea surface temperature variations in the Arabian Sea over the last 23 kyr using organic proxies (TEX86 and UK'37). Paleoceanography, 21(3), PA3003, https://doi.org/10.1029/2005PA001215
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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: NIOP-C2 * Basis: Tyro * Method/Device: Piston corer (PC)
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