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Hui-Ling Lin IMGC/NSYSU 2008.02.20

Historical Hydrographic Records off Southwest Taiwan Based on Foraminiferal Isotopic Compositions. Acknowledgements: Coordinator – Prof. James Liu/ NSYSU Prof. Saulwood Lin/NTU Prof. Chi-An Huh/Academia Sinica Prof. Hong-Chun Li/NCKU Prof. Horng-Sheng Mii/NTNU

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Hui-Ling Lin IMGC/NSYSU 2008.02.20

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  1. Historical Hydrographic Records off Southwest Taiwan Based on Foraminiferal Isotopic Compositions Acknowledgements: Coordinator – Prof. James Liu/NSYSU Prof. Saulwood Lin/NTU Prof. Chi-An Huh/Academia Sinica Prof. Hong-Chun Li/NCKU Prof. Horng-Sheng Mii/NTNU Technicians onboard of R/V ORI+ROIII Jeff, Francy, Lydia, etc… Hui-Ling Lin IMGC/NSYSU 2008.02.20

  2. North of KPC South of KPC Cores collected between October 2004 and April 2006

  3. North of KPC 302 m 307 m 638 m 683 m 732 m 767 m

  4. South of KPC 376 m 491 m 662 m 721 m 822 m

  5. warm x x Air temperature record from Hengchun Weather Station

  6. Anthropogenic influence ? x x Multivariate ENSO Index (MEI)

  7. Depositional sequence?

  8. North of KPC

  9. South of KPC

  10. warmer/fresher cooler/saline

  11. light vs. heavy narrow vs. wide

  12. Mode 1 Mode 2 EOF Distribution of dyed benthic forams <living shells> from surface sediments Mode 3

  13. Benthic foraminiferal d18O + d13C records <downslope profile>

  14. Amplitude of isotope signal at 911 m is greater than that in 1263 m Bottom water ...

  15. Take Home Messages: Hydrographic signals recorded by planktonic forams are comparable with local temperature record and global MEI index; Variations of bottom water change (d18O+d13C) in deep water (>1000 m) is relatively condensed than those from shallow water.

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