| 1. | Study of estimating instantaneous unit hydrograph applying genetic algorithm
遗传算法在估计瞬时单位线参数中的应用 |
| 2. | Unit hydrograph method
单位历线法 |
| 3. | Forest ecosystem ; hydrological system ; global change ; guandaushi watershed ; instantaneous unit hydrograph
森林生态系、水文系统、全球变迁、关刀溪集水区、瞬时单位历线 |
| 4. | The results show that the minus value and fluctuation of unit hydrograph can be mitigated and the error of observed discharge can be withstood using the robustified ridge estimation
最后采用抗差岭估计来推算单位线，该方法既可以解决共线性的问题，也可以抗御粗差的影响，得到比较稳定的单位线。 |
| 5. | According to the collected data in first two years , the study tried to simulate the runoff model by the instantaneous unit hydrograph theory and analyzed the data , the results were shown as follows
本文系以瞬时单位历线为基础，进行迳流历线之模拟，同时将分析整理前两年之观测资料，所得之初步结果列述如下： |
| 6. | The instantaneous unit hydrograph theory would be suitable for the high antecedent baseflow and the high rainfall intensity to estimate the direct runoff , but it still needs to prove its fitness with much more cases
在临前基流量较大或降雨强度较大时，应用瞬时单位历线理论分析迳流特性之准确性较高，然确实之适用条件仍有待进一步之研究。 |
| 7. | Cthe method of establishment of spatial analysis information system about water resource in longkou city based on water experiment and observational data and special map , spatial database and attributive database of water resource is established with arc / info7 . 1 ~ arcview3 . 1 ~ photoshop5 . o ~ idrisi2 . o ~ . visual foxpro5 . o . taking horton geomorphology and valdes geomorphicly immectiate unit hydrograph ( g theory ) as theory direction , the database is analyzed and mathematical models is found . linking basic database and model database , that spatial database and attributive database of water resource is established
龙口市水资源时空分析信息系统构建的方法以水利实验、观测数据和专题地图等资料为基础数据，在arc / info7 . 1 、 arcview3 . 0 、 photoshop5 . 0 、 idrisi2 . 0 、 visualfoxpro5 . 0技术支持下，构建起水资源空间数据库和属性数据库；以g理论和horton地貌律为理论指导，进行数据库分析，并建立水资源数学计算模型，即模型库构建；将基础数据库和数学模型库藕合在一起，建立起龙口市水资源时空分析信息系统。 |
| 8. | The geomorphological instantaneous unit hydrograph ( giuh ) is viewed as the frequency distribution of the times of arrival of individual water deoplets at the catchment outlet . the travel path , for a typical hillslope cell . consists of a hillslope fraction , corresponding to overland flow and a stream fraction , corresponding to concentrated channeled flow . to obtain the time of travel , velocities must be defined . hillslope and stream velocities vary with location and must be strongly correlated with slope , and therefore a spatial distribution of velocities and hence of travel times could be obtained . the present methods of giuh neglect any time delays associated with overland flow pathways
地貌单位线被看作是流域上各水质点在弱相互作用下，到达流域出口汇流时间的频率分布。对于一个典型的山坡型网格单元，汇流路径由两部分组成，即坡地部分和河道部分，为了得到汇流时间，必须首先确定汇流速度。坡地和河道的汇流速度随着区域位置而变，并且必然与坡度有关，因此，可首先计算流速的空间分布，进而得到汇流时间的空间分布。 |
| 9. | Geography position and meteorology character in gongboxia watershed are analyzed , according to which the excess of infiltration and instantaneous unit hydrograph are used in runoff and affluence models , and muskingum routing method in river course affluence , kalman filtering technique and least square method in real - time correction
分析公伯峡流域所处地理位置及该流域内的气象特征，确定产、汇流模型采用超渗产流和瞬时单位线，河道汇流采用马斯京根法，实时校正法由卡尔曼滤波和最小二乘法组成。 |
