Abstract
The multifractal properties and scaling behaviors of the long-term and recent 2000-year δ18O records of NGRIP ice core are investigated by the multifractal detrended fluctuation analysis method. The generalized Hurst exponents, multifractal scaling exponents, and singularity spectrums of two δ18O records are derived to verify the multifractiality of two records. And the multifractal behaviors of two records are obviously different, which may reflect the climate change of the recent 2000-year time is quite different from one of the long-term time. In addition, the probability distribution analysis of two δ18O records is presented to manifest the different multifractality between two δ18O records of NGRIP ice core. Our results will be helpful to research the climate change.
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