VARIATION IN SURFACE AND THERMOCLINE TEMPERATURE OF THE EASTERN TIMOR SEA FOR THE LAST 30 KA AND ITS PALEOCEANOGRAPHIC IMPLICATIONS

PANG Xiaolei; DING Xuan

doi:10.3724/SP.J.1140.2015.02117

2015 Vol. 35, No. 2

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Article navigation > Marine Geology & Quaternary Geology > 2015 > 35(2): 117-124

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PANG Xiaolei, DING Xuan. VARIATION IN SURFACE AND THERMOCLINE TEMPERATURE OF THE EASTERN TIMOR SEA FOR THE LAST 30 KA AND ITS PALEOCEANOGRAPHIC IMPLICATIONS[J]. Marine Geology & Quaternary Geology, 2015, 35(2): 117-124. doi: 10.3724/SP.J.1140.2015.02117

Citation:

PANG Xiaolei, DING Xuan. VARIATION IN SURFACE AND THERMOCLINE TEMPERATURE OF THE EASTERN TIMOR SEA FOR THE LAST 30 KA AND ITS PALEOCEANOGRAPHIC IMPLICATIONS[J]. Marine Geology & Quaternary Geology, 2015, 35(2): 117-124. doi: 10.3724/SP.J.1140.2015.02117

VARIATION IN SURFACE AND THERMOCLINE TEMPERATURE OF THE EASTERN TIMOR SEA FOR THE LAST 30 KA AND ITS PALEOCEANOGRAPHIC IMPLICATIONS

China University of Geosciences(Beijing), Beijing 100083

Received Date: 13 June 2014

Revised Date: 21 August 2014

Abstract

Abstract

We studied the sediments of core MD98-2172 taken from the eastern Timor Sea within the main path of outflow of ITF. Sea surface temperature (SST) and thermocline water temperature (TWT) were reconstructed for the last 30 ka with Mg/Ca in shells of Globigerinoides ruber and Pulleniatina obliquiloculata. The SST records show a substantial glacial-interglacial cycle, with a maximum difference of 4.2℃during the last deglaciation, while the TWT shows a maximum of difference about 4℃throughout the period from last glacial maximum to early Holocene. Two cold events occurred during the deglaciation according to SST, corresponding to the Younger Drays (YD) and Heinrich event 1 (H1) respectively. The SST records vary in phase with climatic change revealed by the Antarctic ice core. It suggests that there is a closely link between the tropical sea and the climatic change in high latitudes. A strongly decline of temperature (3℃) was seen in TWT records. The difference between SST and TWT increases during Holocene, indicating that the thermocline depth is getting shallower. We speculate that all of the sea level rise, monsoon activity and ENSO may have played important roles in influencing thermocline depth of the ITF outflow.
- Eastern Timor Sea /
- sea surface temperature /
- thermocline water temperature /
- Indonesian Throughflow /
- Indo-Pacific warm pool /
- ENSO

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References

[1]	Oppo D W, Rosenthal Y. The Great Indo-Pacific Communicator[J]. Science, 2010, 328(5985):1492-1494. Google Scholar
[2]	Gordon A L, Sprintall J, Van Aken H M, et al. The Indonesian throughflow during 2004-2006 as observed by the INSTANT program[J]. Dynamics of Atmospheres and Oceans, 2010, 50(2):115-128. Google Scholar
[3]	Sprintall J, Wijffels S E, Molcard R, et al. Direct estimates of the Indonesian Throughflow entering the Indian Ocean:2004-2006[J]. Journal of Geophysical Research-Oceans, 2009, 114:19. Google Scholar
[4]	Linsley B K, Rosenthal Y, Oppo D W. Holocene evolution of the Indonesian throughflow and the western Pacific warm pool[J]. Nature Geoscience, 2010, 3(8):578-583. Google Scholar
[5]	Gordon A L, Susanto R D, Vranes K. Cool Indonesian throughflow as a consequence of restricted surface layer flow[J]. Nature, 2003, 425(6960):824-828. Google Scholar
[6]	Gordon A L, Huber B A, Metzger E J, et al. South China Sea throughflow impact on the Indonesian throughflow[J]. Geophysical Research Letters, 2012, 39:7. Google Scholar
[7]	Wang B, Liu J, Kim H J, et al. Recent change of the global monsoon precipitation (1979-2008)[J]. Climate Dynamics, 2012, 39(5):1123-1135. Google Scholar
[8]	Gagan M K, Hendy E J, Haberle S G, et al. Post-glacial evolution of the Indo-Pacific Warm Pool and El Nino-Southern Oscillation[J]. Quaternary International, 2004, 118:127-143. Google Scholar
[9]	Ding X, Bassinot F, Guichard F, et al. Indonesian Throughflow and monsoon activity records in the Timor Sea since the last glacial maximum[J]. Marine Micropaleontology, 2013, 101:115-126. Google Scholar
[10]	Lea D W, Pak D K, Spero H J. Climate impact of late quaternary equatorial Pacific sea surface temperature variations[J]. Science, 2000, 289(5485):1719-1724. Google Scholar
[11]	Anand P, Elderfield H, Conte M H. Calibration of Mg/Ca thermometry in planktonic foraminifera from a sediment trap time series[J]. Paleoceanography, 2003, 18(2). Google Scholar
[12]	Xu J, Kuhnt W, Holbourn A, et al. Changes in the vertical profile of the Indonesian Throughflow during Termination Ⅱ:Evidence from the Timor Sea[J]. Paleoceanography, 2006, 21(4). Google Scholar
[13]	Mohtadi M, Luckge A, Steinke S, et al. Late Pleistocene surface and thermocline conditions of the eastern tropical Indian Ocean[J]. Quaternary Science Reviews, 2010, 29(7-8):887-896. Google Scholar
[14]	Dang H, Jian Z, Bassinot F, et al. Decoupled Holocene variability in surface and thermocline water temperatures of the Indo-Pacific Warm Pool[J]. Geophysical Research Letters, 2012, 39(1). Google Scholar
[15]	Barker S, Greaves M, Elderfield H. A study of cleaning procedures used for foraminiferal Mg/Ca paleothermometry[J]. Geochemistry Geophysics Geosystems, 2003, 4(9). Google Scholar
[16]	de Villiers S, Greaves M, Elderfield H. An intensity ratio calibration method for the accurate determination of Mg/Ca and Sr/Ca of marine carbonates by ICP-AES[J]. Geochemistry Geophysics Geosystems, 2002, 3(1). Google Scholar
[17]	Rosenthal Y, Lohmann G P, Lohmann K C, et al. Incorporation and preservation of Mg in Globigerinoides sacculifer:Implications for reconstructing the temperature and O-18/O-16 of seawater[J]. Paleoceanography, 2000, 15(1):135-145. Google Scholar
[18]	Dekens P S, Lea D W, Pak D K, et al. Core top calibration of Mg/Ca in tropical foraminifera:Refining paleotemperature estimation[J]. Geochemistry Geophysics Geosystems, 2002, 3(4):1-29. Google Scholar
[19]	Rosenthal Y, Lohmann G P. Accurate estimation of sea surface temperatures using dissolution-corrected calibrations for Mg/Ca paleothermometry[J]. Paleoceanography, 2002, 17(3):6. Google Scholar
[20]	Locarnini R A, Mishonov A V, Antonov J I, et al. World Ocean Atlas 2009, Volume 1:Temperature. S. Levitus, Ed.[C]//NOAA Atlas NESDIS 68, US Government Printing Office, Washington, DC, 2010:184. Google Scholar
[21]	Liu Z, Yang H. Extratropical control of tropical climate, the atmospheric bridge and oceanic tunnel[J]. Geophysical Research Letters, 2003, 30(5). Google Scholar
[22]	Visser K, Thunell R, Stott L. Magnitude and timing of temperature change in the Indo-Pacific warm pool during deglaciation[J]. Nature, 2003, 421(6919):152-155. Google Scholar
[23]	Tian C, Tian J. Warming magnitude of Indonesian Throughflow during the penultimate deglaciation (Termination Ⅱ) and its relationship with climate change in high-latitude regions[J]. Chinese Science Bulletin, 2010, 55(32):3709-3717. Google Scholar
[24]	Xu J, Holbourn A, Kuhnt W G, et al. Changes in the thermocline structure of the Indonesian outflow during Terminations I and Ⅱ[J]. Earth and Planetary Science Letters, 2008, 273(1-2):152-162. Google Scholar
[25]	Gibbons F T. The Centennial and Millennial Variability of the IndoPacific Warm Pool and the Indonesian Throughflow[D].Massachusetts Institute of Technology,2012. Google Scholar
[26]	Sarnthein M, Grootes P M, Holbourn A, et al. Tropical warming in the Timor Sea led deglacial Antarctic warming and atmospheric CO2 rise by more than 500 yr[J]. Earth and Planetary Science Letters, 2011, 302(3-4):337-348. Google Scholar
[27]	Fan W, Jian Z, Bassinot F, et al. Holocene centennial-scale changes of the Indonesian and South China Sea throughflows:Evidences from the Makassar Strait[J]. Global and Planetary Change, 2013, 111:111-117. Google Scholar
[28]	Bolliet T, Holbourn A, Kuhnt W, et al. Mindanao Dome variability over the last 160 kyr:Episodic glacial cooling of the West Pacific Warm Pool[J]. Paleoceanography, 2011, 26(1). Google Scholar
[29]	Gordon A L. Oceanography-The brawniest retroflection[J]. Nature, 2003, 421(6926):904-905. Google Scholar
[30]	Griffiths M L, Drysdale R N, Gagan M K, et al. Increasing Australian-Indonesian monsoon rainfall linked to early Holocene sea-level rise[J]. Nature Geoscience, 2009, 2(9):636-639. Google Scholar
[31]	Andersen K K, Azuma N, Barnola J-M, et al. High-resolution record of Northern Hemisphere climate extending into the last interglacial period[J]. Nature, 2004, 431(7005):147-151. Google Scholar
[32]	Petit J R, Jouzel J, Raynaud D, et al. Climate and atmospheric history of the past 420000 years from the Vostok ice core, Antarctica[J]. Nature, 1999, 399(6735):429-436. Google Scholar
[33]	Bard E, Hamelin B, Arnold M, et al. Deglacial sea-level record from Tahiti corals and the timing of global meltwater discharge[J]. Nature, 1996, 382(6588):241-244. Google Scholar
[34]	Peltier W R, Fairbanks R G. Global glacial ice volume and Last Glacial Maximum duration from an extended Barbados sea level record[J]. Quaternary Science Reviews, 2006, 25(23):3322-3337. Google Scholar
[35]	Waelbroeck C, Labeyrie L, Michel E, et al. Sea-level and deep water temperature changes derived from benthic foraminifera isotopic records[J]. Quaternary Science Reviews, 2002, 21(1-3):295-305. Google Scholar
[36]	Moy C M, Seltzer G O, Rodbell D T, et al. Variability of El Nio/Southern Oscillation activity at millennial timescales during the Holocene epoch[J]. Nature, 2002, 420(6912):162-165. Google Scholar