hydrograph造句

• Determination of flood control level hydrograph in chaershen reservoir
  察尔森水库汛限水位过程线的确定
• Base flow separation from daily flow hydrograph using automated techniques
  流量过程线的自动分割方法探讨
• 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
• Unit hydrograph method
  单位历线法
• The method is tested using xin ' anjiang model to calculate the discharge hydrograph
  并对抗差后的雨量资料采用新安江模型进行产汇流计算。
• According to the hydrograph , march was the drought period . the surface water flow was vanishing
  由年流量之变化，初步可了解3月为枯水期，地表流量近乎消失。
• 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
• A flood peak cut coefficient ( ) is proposed to measure the affection of the flood hydrograph for the risk calculating of the flood discharge
  本文分析了洪水过程这一不确定性因素，并用洪峰削减系数将洪水过程的不确定性量化。
• In this paper , those uncertain factors affecting the flood discharge are discussed , especially the uncertainty of flood hydrograph
  本文全面考虑了影响施工导流及泄洪风险的不确定性因素，重点分析了洪水过程的不确定性对施工导流及泄洪风险的影响。
• So the uncertainty of flood hydrograph is really a important factor which contributes to the risk of flood discharge . for practical usage , c programs are written for dealing with so much data
  针对调洪演算重复、繁琐、工作量大的特点，本文也编制了处理前期数据的计算程序。
• 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。
• 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：
• 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。
• The paper conducts partition and comparison of pollution load within the basin during 1991 ~ 1999 period by taking shaanxi section of weihe river basin as an example and using separation method of hydrograph and rainfall differential technique respectively
  以渭河流域陕西段为实例，分别运用径流分割法、降雨量差值法对流域内1991 ~ 1999年污染负荷进行了分割，并进行相互比较。
• With the observations and by using smg ( system model of genesis ) model proposed by qinyi , the daily runoff hydrograph at hongqi station of tao river is forecasted . the results showed that smg model is simple for applying and not strict with data
  根据流域的观测资料条件采用由秦毅提出的具有成因概念的系统模型( systemmodelofgenesis ，简称smg模型)进行洮河红旗站日径流过程预报。
• Project i , project ii and project iii that are different in processing precipitation data as the input of hydrological model were built to model day hydrograph and flood hydrograph , so as to analyze the effect of spatial precipitation heterogeneity on runoff process
  本文建立了雨量输入处理方法不同的方案、方案和方案三种方案，用这三个方案分别作日流量模拟与洪水过程模拟，来分析降水空间分异性对模拟水文过程的影响。
• By monte - carlo method the flood discharge risk is calculated with consideration of the uncertainty of flood hydrograph , and the result is compared with that without consideration of the uncertainty of flood hydrograph . it is clear that the flood discharge risk is lower when the uncertainty of flood hydrograph is considered
  文章最后用蒙特卡洛法分别计算了此工程在考虑洪水过程不确定性和不考虑时泄洪风险值，比较二者的计算结果，后者的风险值明显大于前者，这说明，洪水过程不确定性对泄洪风险的影响不可忽略不计。
• 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。
• Through examination of the recession limbs of the observed hydrographs , during periods with no rain and thus no surface runoff , one can determine the value of . for this catchment , a value of 0 . 8 is obtained . the simulated subsurface runoff at each grid is routed to the outlets through a unit - hydrograph method for overland flow and the linear saint - venant equation for channel flow to get the discharge at xixian station
  对所研究的流域而言,经过估算消退系数为0 . 8 .耦合着这两种不同地下径流机制的clm模型都可以计算出每个网格的地表地下径流深,采用dag lohman 34 , 35发展的汇流模型进行汇流由于是研究地下径流,所以取每个网格的地表径流为0 ,该模型采用单位线计算坡面汇流线性圣维南saint - venant equation进行河道汇流
• 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。