Reef coral δ18O thermometer in Hainan island waters, south China sea
Creators
- 1. China Science and Technology Univ., Hefei (China). Dept. of Earth and Space Sciences
- 2. Academia Sinica, Beijing (China). Research Center of Mineral Resources Exploration
- 3. Academia Sinica, Guangzhou (China). South China Sea Inst. of Oceanography
Description
An 18-year-long (1981-1998) study was conducted in Hainan Island waters (22 degree 22'N, 110 degree 39'E) to determine the relationship between δ18O in skeletal aragonite carbonate and sea surface temperature (SST) in porites lutea of reef-building corals. δ18O values in skeletal aragonite carbonate were measured by means of mass spectrometry. Coral samples grew at 5 m 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 δ18OPDB + 4.9 (r = 0.80) and dδ18O/dT = -0.24 per mil/degree C. The δ18O 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 hind cast
Additional details
Publishing Information
- Journal Title
- Nuclear Science and Techniques
- Journal Volume
- 11
- Journal Issue
- 3
- Journal Page Range
- p. 162-165
- ISSN
- 1001-8042
INIS
- Country of Publication
- China
- Country of Input or Organization
- China
- INIS RN
- 32003443
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; S54: ENVIRONMENTAL SCIENCES;
- Descriptors DEI
- ARAGONITE; CARBONATES; CHINA; CLIMATES; CORALS; ISLANDS; ISOTOPE RATIO; MASS SPECTROSCOPY; OXYGEN 18; SAMPLING; SEAS; TEMPERATURE DEPENDENCE; TERRITORIAL WATERS; THERMOMETERS
- Descriptors DEC
- ANIMALS; ASIA; CARBON COMPOUNDS; CARBONATE MINERALS; CNIDARIA; COELENTERATA; EVEN-EVEN NUCLEI; INVERTEBRATES; ISOTOPES; LIGHT NUCLEI; MEASURING INSTRUMENTS; MINERALS; NUCLEI; OXYGEN COMPOUNDS; OXYGEN ISOTOPES; SPECTROSCOPY; STABLE ISOTOPES; SURFACE WATERS