| Γ型地貌瞬时单位线探讨 |
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| 引用本文： | 靳长兴.Γ型地貌瞬时单位线探讨[J].地理研究,1990,9(4):61-71. |
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| 作者姓名： | 靳长兴 |
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| 作者单位： | 陕西机械学院水利系 |
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| 摘 要： | 在地貌瞬时单位线中作者假定沿任一“路径”的等待时间密度函数成Γ型分布。本文讨论了Γ型地貌瞬时单位线的推导、参数确定和特点。并取蛇家口、三川口流域的突测资料验证,计算洪峰值和涨洪历时与实测值十分接近。
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| 关 键 词： | 地貌瞬时单位线 流速 降雨 |
| 收稿时间： | 1986-11-30 |
A STUDY OF GAMMA TYPE GEOMORPHOIOGIC INSTANTANEOUS UNIT HYDROGRAPH |
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| Jin Changxing.A STUDY OF GAMMA TYPE GEOMORPHOIOGIC INSTANTANEOUS UNIT HYDROGRAPH[J].Geographical Research,1990,9(4):61-71. |
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| Authors: | Jin Changxing |
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| Institution: | School of water Resources and Hydro-elective Engineering, Shaanxi Institute of Mechanical Engineering |
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| Abstract: | Horton's empirical laws of network composition is studied and applied to six catchments in North Shaanxi Province of China, The relationships between Horton parameters are discussed.Based upon the Horson's laws, a geomorphologic instantaneous unit hydrograph (GUH) model is proposed, in which, the waiting time distribution in each path is supposed to be a Gamma distribution. General expressions for the inital state probability anb the transition probability in GUH are derived. All the parameters but one in the GUH are calculated from Horton parameters and stream flow velocity of each flood event. The unknown parameter is decided by optimization.The proposed model is applied to ten rainfall-runoff events in two catchments, the results are encouraging. |
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| Keywords: | Geomorphologic Instantaneous Unit Hydrograph (GUH) volocity rainfall |
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