摘要
采用改进的EMD(经验模态分解)方法对前人重建的全新世石笋、冰芯氧同位素古气候记录和树轮^(14)C含量变化太阳活动替代指标时间序列进行分析,提取到88~110、206~220、~350、~520、~1 000、~2 200和~4 300a等二者基本一致的准周期信号,探讨了太阳活动在百千年尺度上对气候变化的可能影响。
The EMD（empirical mode decomposition）method is introduced in this paper to analyze the reconstructed sequences of Holocene stalagmite and ice-core oxygen isotope records and tree ring 14C content, which document the variability of climate and solar activity respectively. The signal analysis showed that there existed multiple periods including 88-110.206-220.-350.-520.-1 000.-2 200 and -4 300, in both sequences. Furthermore, the impact of solar activity on the climate change is ex- plored in centennial to millennial-scales.
出处
《中国海洋大学学报（自然科学版）》
CAS
CSCD
北大核心
2017年第7期112-120,共9页
Periodical of Ocean University of China
基金
国家自然科学基金项目(41576060)
国家自然科学基金与山东省联合基金项目(U1406401)资助~~
