【摘要】 针对采用传统参数等值线图法推求无资料地区设计年径流时存在工作量大且容易引入人为偏差的问题,以ASTER GDEM 2作为水文分析的基础数据,利用ArcGis9.3水文分析模块和空间插值技术改进传统参数等值线图法,并将其应用于九龙河流域麻窝沟河口无资料地区设计年径流。实例应用结果表明,基于ASTER GDEM 2数据的中小流域无资料地区设计年径流计算方法可减少设计人员工作量,能避免人为引入的偏差,对提高设计工作效率有较大帮助。更多还原

【Abstract】 The traditional parameter isoline method has shortcomings of huge workload and human error when it is used to calculate the design annual runoff in ungauged area.Taking ASTER GDEM 2as basic data of hydrologic analysis,ArcGis9.3hydrological analysis module and spatial interpolation techniques are applied to improve the traditional parameter isoline method.Finally,this method is used to calculate the design annual runoff of ungauged area in Mawogou estuary of Jiulonghe basin.The example results show that the proposed method can reduce the design staff’s workload and avoid human error,which is helpful to improve the efficiency of design work.更多还原