Advertisement

Chinese Science Bulletin

, Volume 48, Issue 2, pp 194–199 | Cite as

Geological records of marine environmental changes in the southern Okinawa Trough

  • Rong Xiang
  • Tiegang Li
  • Zuosheng Yang
  • Anchun Li
  • Fuqing Jiang
  • Jun Yan
  • Qiyuan Cao
Reports

Abstract

Indexes of sediment grain size, sedimentation rates, geochemical composition, heavy minerals, benthic foraminiferal fauna, indicator species of the Kuroshio Current, paleo-SST and carbonate dissolution of core E017 conformably suggest a great marine environmental change occurring at about 10.1–9.2 cal. kaBP in the southern Okinawa Trough, which may correspond to the strengthening of the Kuroshio Warm Current and re-entering the Okinawa Trough through the sea area off northeast Taiwan. The invasion of Kuroshio current has experienced a process of gradual strengthening and then weakening, and its intensity became more fluctuation during the last 5000 years. Compared to the transition of sediment grain size, geochemical composition and heavy minerals, the foraminiferal faunas show a 900-year lag, which may indicate that the invasion of Kuroshio Current and the consequent sea surface and deepwater environmental changes is a gradual process, and fauna has an obvious lag compared to environment altering. The carbonate dissolution of the Okinawa Trough has had an apparent strengthening since 9.2 cal. kaBP, and reached a maximum in the late 3000 years, which may be caused by the deepwater environmental changes due to the invasion of Kuroshio Current.

Keywords

southern Okinawa rough foraminifera sedimentation rate Kuroshio Current carbonate dissolution 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Jian, Z., Saito, Y., Wang, P. et al., Shifts of the Kuroshio axis over the last 20000 years, Chinese Science Bulletin (in Chinese), 1998, 43 (5): 532.Google Scholar
  2. 2.
    Li, K., Climate of the China Seas and Northwestern Pacific (in Chinese), Beijing: China Ocean Press, 1993, 640.Google Scholar
  3. 3.
    Ujiié, J., Ujiié, Y., Late Quaternary course changes of the Kuroshio Current in the Ryukyu Arc region, northwestern Pacific Ocean, Marine Micropaleontology, 1999, 37: 23.CrossRefGoogle Scholar
  4. 4.
    Sawada, K., Handa, N., Variability of the path of the Kuroshio ocean current over the past 25000 years, Nature, 1998, 392: 592.CrossRefGoogle Scholar
  5. 5.
    Shieh, Y. T., Wang, C. H., Chen, M. P. et al., The Last Glacial Maximum to Holocene environment changes in the southern Okinawa Trough, Journal of Asian Earth Sciences, 1997, 15(1): 3.Google Scholar
  6. 6.
    Shieh, Y. T., Chen, M. P., The ancient Kuroshio current in the Okinawa Trough during the Holocene, Acta Oceanographica Taiwanica, 1995, 34(4): 73.Google Scholar
  7. 7.
    Jian, Z., Wang, P., Saito, Y. et al., Holocene variability of Kuroshio Current in the Okinawa Trough, northwestern Pacific Ocean, Earth and Planetary Science Letters, 2000, 184: 305.CrossRefGoogle Scholar
  8. 8.
    Chen, R., Meng, Y., Li, B. et al., Variations in the lysocline of carbonate in the southern Okinawa Trough during the last 20000 years (in Chinese with English abstract), Marine Geology and Quaternary Geology, 1999, 19(1): 25.Google Scholar
  9. 9.
    Xiang, R., Li, T., Yan, J. et al., Planktonic foraminiferal distribution and modern carbonate dissolution in the southern Okinawa Trough Earth Science (in Chinese with English abstract), 2001, 26(suppl.): 69.Google Scholar
  10. 10.
    Liu, Z., Saito, Y., Li, T. et al., Millennial-scale paleoceanography in Okinawa trough during late quaternary period, Chinese Science Bulletin, 1999, 18: 1705.CrossRefGoogle Scholar
  11. 11.
    Thompson, P. R., Planktonic foraminifera in the Western North Pacific during the past 150000 years, comparison of modern fossil assemblages, Palaeogeography, Palaeoclimatology, Palaeoecology, 1981, 35: 241.CrossRefGoogle Scholar
  12. 12.
    Stuiver, M., Reimer, P. J., Bard, E. et al., INTCAL98 radiocarbon age calibration 24000-0 cal. aBP, Radiocarbon, 1998, 40: 1041.Google Scholar
  13. 13.
    Duan, W., Chen, Li., The history of pyrite during the early diagenesis of the Yellow Sea and the East China Sea, Science in China, Series B (in Chinese), 1993, 23(5): 545.Google Scholar
  14. 14.
    Chu, F., Chen, L., Shen, S. et al., Origin and environmental significance of authigenic pyrite from the south Yellow Sea sediments, Oceanologia et Limnologia Sinica (in Chinese with English abstract), 1995, 26(3): 227.Google Scholar
  15. 15.
    Kim, J. M., Kennett, J. P., Paleoenvironmental changes associated with the Holocene marine transgression, Yellow Sea (Hwanghae), Marine Micropaleontology, 1998, 34: 71.CrossRefGoogle Scholar
  16. 16.
    Kim, J. M., Kucera, M., Benthic foraminiferal record of environmental changes in the Yellow Sea (Hwanghae) during the last 15000 years, Quaternary Science Reviews, 2000, 19: 1067.CrossRefGoogle Scholar
  17. 17.
    Liu, J., Li, S., Wang, S. et al., Sea level changes of the Yellow Sea and formation of the Yellow Sea Warm Current since the last deglaciation, Marine Geology and Quaternary Geology (in Chinese with English abstract), 1999, 19(1): 13.Google Scholar
  18. 18.
    Li, T., Li, S., Cang, S. et al., Palaeo-hydrological reconstruction of the southern Yellow Sea inferred from fpraminiferal fauna in core YSDP102, Oceanologia et Limnologia Sinica (in Chinese with English abstract), 2000, 31(6): 588.Google Scholar
  19. 19.
    Yang, Z., Guo, Z., Wang, Z. et al., The macro-pattern of eastward transportation of suspended matters from the shelf to the deep sea in the Yellow Sea and the East China Sea, Acta Oceanoligica Sinica (in Chinese with English abstract), 1992, 14(2): 81.Google Scholar
  20. 20.
    Guo, Z., Yang, Z., Lei, K. et al., The distribution and composition of suspended matters and their influencing factors in the central-southern area of Okinawa Trough and its adjacent shelf sea, Acta Oceanoligica Sinica (in Chinese with English abstract), 2001, 23(1): 66.Google Scholar
  21. 21.
    Li, B., Jian, Z., Wang, P., Pulleniatina obliquiloculata as a paleoceanographic indicator in the southern Okinawa Trough during the last 20000 years, Marine Micropaleontology, 1997, 32: 59.CrossRefGoogle Scholar
  22. 22.
    Oda, M., Takemoto, A., Planktonic foraminifera and paleoceanography in the Domain of the Kuroshio current around Japan during the last 20000 years, The Quaternary Research (Tokyo) (in Japanese with English abstract), 1992, 31(5): 341.CrossRefGoogle Scholar
  23. 23.
    Li, T., Liu, Z., Hall, M. A. et al., Heinrich event imprints in the Okinawa Trough: evidence from oxygen isotope and planktonic foraminifera, Palaeogeography, Palaeoclimatology, Palaeoecology, 2001, 176: 133.CrossRefGoogle Scholar
  24. 24.
    Jian, Z., Li, B., Plaumann, U. et al. Late Holocene cooling event in the western Pacific, Science in China, Series D, 1996, 39(5): 543.Google Scholar
  25. 25.
    Kaiho, K., Benthic foraminiferal dissolved-oxygen index and dissolved-oxygen levels in the modern ocean, Geology, 1994, 22: 719.CrossRefGoogle Scholar
  26. 26.
    Jian, Z., Chen, R., Li, B., Paleoceanographical record of deep-water benthic foraminifera in the southern Okinawa Trough since the last 20000 years, Science in China, Series D (in Chinese), 1996, 26 (5): 467.Google Scholar

Copyright information

© Science in China Press 2003

Authors and Affiliations

  • Rong Xiang
    • 1
    • 2
  • Tiegang Li
    • 1
  • Zuosheng Yang
    • 2
  • Anchun Li
    • 1
  • Fuqing Jiang
    • 1
  • Jun Yan
    • 1
  • Qiyuan Cao
    • 1
  1. 1.Institute of OceanologyChinese Academy of SciencesQingdaoChina
  2. 2.College of GeosciencesOcean University of QingdaoQingdaoChina

Personalised recommendations