Abstract
According to the evolutionary processes of stable oxygen isotope in lake water, a physical model has been established to calculate paleotemperature and used to quantitatively re-build the temperature sequences in the past 200 ka in Zoigê basin, eastern Tibet. The results show that in the Zoigê region the maximum temperature of the period equivalent to stage 7 in deep-sea stable oxygen record was 2.7êC higher than that of the present; in stage 6, it was 4.3êC lower and the value of the peak temperature of stage 5 was 5.2 êC higher than the present air temperature; in stage 4, the average temperature was 2-3êC lower; in stage 3, the curve of the temperature es-timated displayed the character of two peaks and one valley, and the value of the temperature dif-ference in the period was above 4êC. Moreover, by comparing the tendency of the curves of pa-leotemperature calculated and responsive stable oxygen isotope of authicarbonate, we also found that during stage 6 the environment in the Zoigê basin was extraordinary, inferring that the stage represented a transition period from warm-dry and cold-wet to warm-wet and cold-dry.
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Wu, J., Wang, S., Shi, Y. et al. Temperature estimation by oxygen-stable record over the past 200 ka in Zoigê basin. Sci. China Ser. D-Earth Sci. 43, 577–586 (2000). https://doi.org/10.1007/BF02879501
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DOI: https://doi.org/10.1007/BF02879501