基于ArcGIS的塔孜鲁鲁河流域单位水文曲线的求取

Paula Stoica, Anca Zaborilă, Marius Telisca, Ioan Bălan, Catrinel-Raluca Giurma-Handley
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引用次数: 0

摘要

在水文研究中,水文曲线用来说明降雨时水流的波动情况。水文曲线的总流量包括径流和基流。单位水文曲线(UH)只测量直接地表径流。利用单位水线理论对降雨事件进行建模,其优点是比水力分布式建模更容易确定,并且可以为应用水文学的目标产生理想的结果。本研究的目的是利用塔孜鲁鲁河流域的物理性质,生成一段流域的单位水文曲线。为此,确定了峰值流量、到达峰值流量的时间和单元线的基宽等参数。本研究探讨了地理信息系统(GIS)和数字高程模型(DEM)在单位水线线开发中的应用。本研究探讨了利用地理信息系统和数字高程模型开发用于河流流量预测和降雨径流建模的单位水文图。在创建了单位水文曲线之后,最常见的用途是设计洪水预测,根据降雨记录实时估计洪水流量,从未测量的流域进行径流评估,并补充不完整的档案。
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Deriving a unit hydrograph for Tazlău River Basin using ArcGIS
: Hydrographs are used in hydrological studies to illustrate the fluctuation of the stream during rainfall. A hydrograph's total flow includes runoff and base flow. The unit hydrograph (UH) only measures direct surface runoff. Modeling rain events by using unit hydrograph theory has the advantage of being easier to determine than hydraulic distributed modeling and can yield desirable outcomes for objectives of applied hydrology. The purpose of this research is to genera te a unit hydrograph for a section of the Tazlău River Basin by utilizing the physical properties of its basin. For this purpose, parameters such as peak discharge, time to peak discharge and the base width of the unit hydrograph were determined. This research explored the use of Geographic Information System (GIS) and Digital Elevation Model (DEM) in the development of unit hydrograph. This research explored the use of GIS and Digital Elevation Model in the development of unit hydrograph for uses in streamflow predictions and rainfall runoff modeling. The most common uses after creating a unit hydrograph are designing flood prediction, which estimates flood flows in real time based on rainfall records, runoff assessment from ungauged watersheds and supplement the incomplete archives.
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