Sediment Depository
With special natural environment and rare human traces, the Arctic and Antarctic, undeveloped and little polluted, are the irreplaceable places for scientific observations and tests to study the global environmental changes. The polar sediments contain the relevant information on the global and regional environmental changes and, through lab analysis, the relevant information on the environmental changes recorded in the sediment can be interpreted. By testing the years of sediment structure, the time sequence of the polar environmental changes can be set up.
In accordance with the research results, on the basis of the global compare, the researches on the interactional relationship among the global hydrosphere, geosphere, biosphere, and atmosphere as well as the researches on the controlling factors and driving mechanism of the global climate and environmental changes provide an important theoretical basis for forecasting the global climate changes in the future. Therefore, the polar sediment research is an important part of the polar science research. In all of the previous CHINARE, the samples of lake sediment, soil, and shallow sea sediment, including lake sediment, soil samples, shallow sea sediment, and continental sediment, have been collected in the Arctic and Antarctic, and several research projects utilizing these samples have been completed successfully and fruitful achievements have been accomplished.
Great Wall Station Lake Sediment Column Rock Core: There are 9 Sediment Drill Cores,No.GA1-GA9,60.49 meters long. It is collected from the Fildes Peninsula,Tern Lake,Xi Lake,and Kitezh Lake,（62°13ˊ57"S，59°57ˊ14"E） at King George Island , West Antarctic. The sediment depository of PRIC preserves the parallel copy of the Sediment Drill Cores sample, and in this depository all of the samples are preserved at low temperature, a part of preserves in the Institute of Geology and Geophysics, Chinese Academy of Sciences,at normal temperature.
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