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河道陡峭指数所反映的祁连山北翼抬升速率的东西差异
  • ISSN号：0023-074X
  • 期刊名称：Chinese Science Bulletin
  • 时间：2010.8.8
  • 页码：2329-2338
  • 分类：P542.1[天文地球—构造地质学;天文地球—地质学]
  • 作者机构：[1]兰州大学西部环境教育部重点实验室,兰州730000, [2]Department of Geosciences, Pennsylvania State University, University Park, PA 16802, USA
  • 相关基金：国家杰出青年科学基金（40925001）、国家创新研究群体科学基金（40721061）和高等学校学科创新引智计划（B06026）资助项目;致谢 感谢石许华、高红山、宋春晖和戴霜提出的宝贵建议.
  • 相关项目：地貌学
作者： 胡小飞|潘保田|KIRBY Eirc|李清洋|耿豪鹏|陈吉峰|
关键词： 祁连山, 河流水力侵蚀模型, 陡峭指数, 抬升速率, 河道纵剖面
中文摘要：

祁连山位于青藏高原东北边缘,其构造抬升速率及其分布特征是理解青藏高原隆升机制的重要线索.近来,河流水力侵蚀模型的研究表明造山带岩石抬升速率是控制河道陡峭指数的主要因素,并且得到了大量的实践证明.利用这一新的方法对祁连山北翼的河流河道进行了分析,尝试从河道纵剖面陡峭指数特征中提取该区域构造抬升信息.结果显示从东到西河道陡峭指数有明显的不同,有东段小,中、西段大的特征.通过对比分析发现,岩性和降水对河道陡峭指数影响不大,也没有证据表明河流负载对其有明显的贡献.河道比降的变化主要是受区域岩石抬升速率差异的影响,河道陡峭指数的分布特征揭示了祁连山北翼抬升速率的分布特征,东段抬升速率较小,中、西段较大,抬升速率最大的位置位于中段榆木山附近区域.

同期刊论文项目
地貌学
期刊论文 31 获奖 1
青藏高原和中东亚干旱区环境变化与地表过程研究
期刊论文 270 会议论文 2 获奖 4
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期刊信息
  • 《科学通报》
  • 北大核心期刊（2011版）
  • 主管单位:中国科学院
  • 主办单位:中国科学院
  • 主编：周光召
  • 地址：北京东黄城根北街16号
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  • 国际标准刊号：ISSN：0023-074X
  • 国内统一刊号：ISSN：11-1784/N
  • 邮发代号:80-213
  • 获奖情况:
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  • 被引量:81792