Reef coral δ¹⁸O thermometer in Hainan island waters, South China Sea

Reef coral δ 18 O thermometer in Hainan island waters, South China Sea 1 first-author 1 1 2 2 3 3 3 Department of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026 Department of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026 The Research Center of Mineral Resources Exploration, the Chinese Academy of Sciences, Beijing 100101 The Research Center of Mineral Resources Exploration, the Chinese Academy of Sciences, Beijing 100101 South China Sea Institute of Oceanography, the Chinese Academy of Science, Guangzhou 510310 South China Sea Institute of Oceanography, the Chinese Academy of Science, Guangzhou 510310 An 18-year-long (1981-1998) study was conducted in Hainan Island waters (22°20＇N, 110°39＇E) to determine the relationship between δ 18 O in skeletal aragonite carbonate and sea surface temperature (SST) in porites lutea of reef-building corals. δ 18 O values in skeletal aragonite carbonate were measured by means of mass spectrometry. Coral samples grew at 5m depth at Longwan Bay. Monthly measurements of the SST from 1960 to 1998 were taken at Qinglan Bay adjacent to the place of the collected samples. The thermometer shows that SST=-4.16 δ 18O PDB + 4.9 ( r =0.80) and d δ 18 O/d T =-0.24 permil/℃. The δ 18 O thermometer is strongly influenced by the rainfall and runoff. Using the thermometer, the SST in the past hundred years with monthly resolution will be reconstructed and the climatic change in the northern area of South China Sea will be hindcasted Reef-building coral Oxygen isotope Thermometer Mass spectrometry References He X X , Peng Z C , Wang Z R et al . Adv Earth Sci (in Chinese) , 1999 , 14 ( 5 ): 505 ~ 512 Adv Earth Sci (in Chinese) Nie B F , Chen T G , Liang M T et al . The relationship between reef-building corals and environment in Nansha archipelago . Beijing : Science Press , 1997 The relationship between reef-building corals and environment in Nansha archipelago Yu K F . Marine Sci Bull , 1998 , 17 ( 3 ): 72 ~ 78 Marine Sci Bull Yu K F , Huang Y S , Chen T G et al . Quaternary Sci , 1999 , ( 1 ): 67 ~ 72 Quaternary Sci Weber J N , Woodhead P M . J Geophys Res , 1972 , 77 ( 3 ): 463 ~ 473 J Geophys Res Zhang X P , Yao T D . Acta Geographica Sinica , 1998 , 53 ( 4 ): 356 ~ 364 Acta Geographica Sinica Wellington G M , Dunbar R B , Merlen G . Paleoceanography , 1996 , 11 : 467 ~ 480 Paleoceanography Carriquiry J D , Risk M J , Schwarcz H P . Geochim Cosmochim Acta , 1994 , 58 : 335 ~ 351 Geochim Cosmochim Acta Quinn T M , Taylor F W , Crowley T J et al . Paleoceanography , 1996 , 11 ( 5 ): 529 ~ 542 Paleoceanography P736.4 Supported by NKBRSF Project Fund (G1999043401), National Natural Science Fundation (49776307), The Innovation Project Fund of Chinese Academy of Sciences (KZCX1-Y-05) 1999-12-09 2000-08-01 2021-02-05 2000 Nuclear Science and Techniques 3 11