安庆师范学院学报：自然科学版2012，Vol.18Issue(4)：91-93,97,4.
川东北宋家洞石笋氧碳同位素周期分析
Periodicity Analyses of Oxygen and Carbon Isotopes of a Stalagmite Retrieved from Songjia Cave, NE Sichuan in Central China
摘要
Abstract
Cycle components of oxygen and carbon isotopes of stalagmite SJ3, which was collected from Songjia Cave in NE Siehuan in Central China, were investigated with wavelet analysis and REDFIT. The results indicate that : ( 1 ) there is a 174 a periodicity in oxygen isotope values during 18.3 - 17.5 ka, and a 174 a periodicity in carbon isotope values during 18.3 - 17.8 ka and 16.2 - 15.4 ka ; ( 2 ) the periodicities of oxygen and carbon isotope values are consistent with the periodicity of 179 a of solar activity. These results suggest that the O - C isotopes of SJ3 correlate closely with solar activity on short time scales.关键词
周期/氧碳同位素/小波分析/REDFITKey words
periodicity/oxygen and carbon isotopes/wavelet analysis/REDFIT分类
资源环境引用本文复制引用
汤静,曹益瑰：,周厚云..川东北宋家洞石笋氧碳同位素周期分析[J].安庆师范学院学报：自然科学版,2012,18(4):91-93,97,4.基金项目
国冢自然科学基金项目（批准号：40973009,40672120）和广东省高等学校人才引进项目资助. （）
