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中国沙漠 ›› 1994, Vol. 14 ›› Issue (1): 45-51.

• 论文 • 上一篇    下一篇

130ka来陕北黄土高原北部的气候变迁

苏志珠1, 董光荣2   

  1. 1. 山西大学黄土高原地理所, 太原 030072;
    2. 中国科学院兰州沙漠研究所 730000
  • 收稿日期:1993-09-30 出版日期:1994-03-20 发布日期:1994-03-20

CLIMATIC CHANGE IN THE NORTHERN SHAANXI LOESS PLATEAU DURING THE LAST 130 000 YEARS

Su Zhizhu1, Dong Guangrong2   

  1. 1. Institute of Loess Plateau Geography, Shanxi University 030072;
    2. Institute of Desert Research, Acadimia Sinica, Lanzhou 730000
  • Received:1993-09-30 Online:1994-03-20 Published:1994-03-20

摘要: 根据陕北黄土高原北部两个典型的地层剖面的岩性特征、磁化率曲线等古气候相关指标,认为130 ka来该区域气候经历了四个明显的暖湿期与干冷期的交替变化。这与黄土高原洛川剖面所反映的古气候旋回及深海氧同位素曲线变化趋势基本吻合,并与全球气候变化具有同步性。

关键词: 黄土高原北部, 陕北, 磁化率曲线, 气候变化

Abstract: We believe that the northern Shaanxi Loess Plateau has experienced 4 periods of humid-warm and dry-cold climatic changes after studying the magnetic susceptibility curve,the lithological characters of stratum and other palaeoclimatic indicators of 2 regions in northern Shaanxi.This is coincident with the trend of the palaeo-climatic change and the deep-sea oxygen isotope curve change represented by the loess section of Luochuan,Shaanxi and suggests that the climatic change of this region during the last 130 000 years is synchronous with that of the whole earth.

Key words: Northern Shaanxi Loess Plateau, Magnetic susceptibility curve, Climatic change