Advances in Earth Science
• Articles •
Liu Yi,Peng Zicheng,Zhou Jing,He Jianfeng,Jiang Yuping,Liu Guijian. Advances in High Resolution of the Environment Records in the Tropical Coral and Global Change[J]. Advances in Earth Science, 2006, 21(4): 383-393.
Ocean is a part of the Earth's system. However,people have lack of knowledge of the ocean activity related to the global change because the instrumental data are much limited in the ocean regions. The tropical corals would supply high resolution of the recorders for reconstructing the paleo-environment and revealing global changes from last maximum glacier period to past decades due to their wide distribution, easily dating, and a broad array of geochemical proxies in the skeletons. The variants of the geochemical proxies recording the environment information have been discussed. The Sr/Ca ratios of corals as a proxy have been paid much attention with claims of precision better than 0.5℃ in reconstructing the sea surface temperature (SST) sequences in the tropical oceans. In the equatorial Pacific, coral isotopic records track the variability of ENSO, monsoon, circulation, etc., which are related to the global changes. The combination of oxygen isotopic composition with Sr/Ca ratios in corals is a robust proxy for salinity. Moreover, the new approaches of coral research in the South China Sea and investigative projects related to globe change have also been commented. A complete database of the coral δ18O and Sr/Ca ratios in the South China Sea is needed to reveal the interactivity between the tropical seas and middle-high latitude lands, and to establish new models for predicting the near-future climatic variability. The MBER projects are a new direction for China's research on marine ecosystems included in the tropical corals in the South China Sea.