| 兰州黄河高漫滩沉积与洪水变化研究 |
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| 引用本文： | 赵景波,王长燕. 兰州黄河高漫滩沉积与洪水变化研究[J]. 地理科学, 2009, 29(3) |
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| 作者姓名： | 赵景波 王长燕 |
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| 作者单位： | 1. 陕西师范大学旅游与环境学院,陕西,西安,710062;陕西师范大学西北历史环境与经济社会发展研究中心,陕西,西安,710062
2. 陕西师范大学旅游与环境学院,陕西,西安,710062 |
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| 基金项目： | 教育部人文社会科学研究基地重大招标项目(05JJD770014)资助 |
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| 摘 要： | 根据兰州黄河高漫滩沉积剖面的观察和81个样品的粒度分析,研究兰州黄河马滩剖面沉积特征和当时的洪水变化。结果表明,马滩剖面明显分为15个沉积层,指示15次较大的洪水。这15个阶段河漫滩洪水深度和规模由大到小的变化顺序依次为第10>12>11>13>15>14>3>5>7>8>6>1>4>9>2阶段。据历史文献推算,马滩高漫滩沉积代表的15次洪水发生在170 a B.P.以来。兰州洪水沉积不连续,这15次洪水的每一次一般代表1 a雨季的短暂时间,两次洪水间隔时间通常为10 a左右,这10 a是没有洪水发生或洪水规模小的阶段,也是降水量正常或偏少的阶段。
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| 关 键 词： | 黄河 高漫滩沉积 洪水演变 洪水规模 发生原因 |
Deposits on High Floodplain and Flood Evolution of Huanghe River in Lanzhou |
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| ZHAO Jing-bo,WANG Chang-yan. Deposits on High Floodplain and Flood Evolution of Huanghe River in Lanzhou[J]. Scientia Geographica Sinica, 2009, 29(3) |
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| Authors: | ZHAO Jing-bo WANG Chang-yan |
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| Affiliation: | 1.College of Tourism and Environment;Shaanxi Normal University;Xi'an;Shaanxi 710062;2.Center for Historical Environment and Socio-Economic Development in Northwest China;Shaanxi 710062 |
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| Abstract: | According to the investigation of the section on high floodplain of the Huanghe(Yellow) River and grain size analyses of 81 samples in Lanzhou,the paper researched the sediment characteristic of the section and the flood variation at that time.Results indicate that the flood sediment layers of the Huanghe River are clear in Lanzhou area,which reflects clearly the variation of the floods and the high resolution short-term precipitation,and is a good target indicating the changes of the flood and precipitatio... |
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| Keywords: | Huanghe River sediment on the high floodplain flood evolution flood scales occurring causes |
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