摘要
通过对进行了等时处理的甜水海钻孔有机碳含量所做的R／S分析，发现其存在明显的Hurst现象，Hurst指数H为0．74，分数维D＝2－H＝1．26，这与太平洋深海岩芯的氧同位素分析结果非常接近。Hurst指数H＝0．74＞0.5，表明甜水海地区气候环境演化存在持续性（Persistence）。甜水海地区地处青藏高原腹地，这种气候环境演化的持续特征可能是晚新生代以来青藏高原持续构造抬升活动影响的结果。
The R/S analysis of organic carbon contents from Tianshuihai Lake Core, which are scaled with time, shows that there is obvious Hurst effect with a Hurst index H of 0. 74 and a fractal dimension D of 1. 26. Theseresults are very close to those based on the R/S analysis of the oxygen isotopic data from deep-sea core of Pacific ocean- The fact that the Hurst index H (0. 74) is greater than 0. 5 suggests the persistence in which the climate and environment around Tianshuihai Lake area will evolve. Generally, the climatic variation in the future around Tianshuihai Lake area will continue in the direction of the climatic evolution in the past more than 200 ka around this area. Tianshuihai Lake area locates in the hinterland of Qinghai-Tibet Plateau. The persistence in the climatic and environmental evolution around this area probably results from the continuous uplift of Qinghai-Tibet Plateau through Late Cenozoic.
出处
《地球化学》
CAS
CSCD
北大核心
2000年第1期89-93,共5页
Geochimica
基金
中国科学院广州地球化学研究所所长基金!970502
国家攀登青藏资助
关键词
有机碳
R/S分析
气候环境变化
甜水海钻孔
organic carbon
R/S analysis
climatic and environmental variation
persistence
Tianshuihai Lake Core
Qinghai-Tibet Plateau
