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中国干旱半干旱地区古粉尘通量差异及其指示的气候意义 被引量:2

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摘要 从各区域独特的地形地貌条件、距离粉尘源区的远近、不同的物源区以及不同的气候控制系统等动力机制因素出发,认为中国北方粉尘通量在空间上与北太平洋V21-146孔深海沉积物、日本Biwa湖湖相记录、全球冰量δ18O曲线所反映的古气候记录在万年时间尺度上一致,自西向东通量减少,显示出与源区的距离成反比的趋势;在时间尺度上,冰期时的粉尘通量明显高于间冰期的通量,冰期通量的变化具有高频波动的特征;现代尘暴粉尘的通量与黄土堆积期的通量相似, 表明在末次冰期时大量的粉尘搬运大多是在尘暴状况下完成的.
出处 《自然科学进展》 北大核心 2005年第8期965-972,共8页
基金 中国科学院知识创新重要方向性项目(KZCX2-SW-118)国家重点基础研究发展规划项目(G2000048703)黄土与第四纪地质国家重点实验室开放基金项目(SKLLQG0320 SKLLQG0422)资助
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同被引文献21

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