| 基于DEM的分布式融雪汇流模型关键算法和实现 |
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| 引用本文： | 刘永强,戴维,刘志辉.基于DEM的分布式融雪汇流模型关键算法和实现[J].干旱区地理,2011,34(1):143-149. |
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| 作者姓名： | 刘永强 戴维 刘志辉 |
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| 作者单位： | 1. 新疆大学资源与环境科学学院,新疆,乌鲁木齐,830046
2. 绿洲生态教育部重点实验室,新疆,乌鲁木齐,830046 |
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| 基金项目： | 国家自然科学基金项目资助(70361001); 新疆大学博士毕业生科研启动基金资助(BS080128) |
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| 摘 要： | 根据小流域和高分辨率DEM数据的特点,在获得栅格单元的坡度、坡向、水流流向、平均流速等相关特征信息并且建立流域的汇流网络之后,建立了一种具有时空特征的基于DEM的分布式融雪汇流模型.在模型中提出了"单元时段"的概念,将其设置为大小可调的参数为模型在现实中的应用提供了极大的便利,给出了模型中的融雪汇流流向出口断面的时间长...
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| 关 键 词： | DEM GeoTIFF Java 融雪 算法 |
Key algorithm and its realization about distributed Snowmelt concentrating-flow model based on DEM |
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| LIU Yong-qiang,DAI Wei,LIU Zhi-hui.Key algorithm and its realization about distributed Snowmelt concentrating-flow model based on DEM[J].Arid Land Geography,2011,34(1):143-149. |
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| Authors: | LIU Yong-qiang DAI Wei LIU Zhi-hui |
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| Institution: | LIU Yong-qiang,DAI Wei,LIU Zhi-hui(1 College of Resources & Environment Science,Xinjiang University,Urumqi 830046,Xinjiang,China,2 Oasis Ecology Key laboratory of Ministry of Education and Xinjiang Uygur Autonomous region,China) |
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| Abstract: | The difficulty of Distributed Snowmelt Runoff Model(DSRM) is to simulate the concentrating process of snowmelt,which plays an important role in discharging of watershed outlet,especially upon its peak value.On researching DSRM,a time-spatial featured and DEM-based Distributed Snowmelt Concentrating-flow Model(DSCFM) according to the characteristics of high-resolution DEM data of small watershed is constructed after obtaining the corresponding traits information including slope degree,slope direction,water f... |
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| Keywords: | DEM GeoTIFF Java snowmelt algorithm |
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