标題：The simulation of surface flow dynamics using a flow-path network model作者：Chen, Yumin; Zhou, Qiming; Li, Sheng; Meng, Fanrui; Bi, Xiaomei; Wilson,John P.; Xing, Zisheng; Qi, Junyu; Li, Qiang; Zhang, Chengfu

來源出版物：INTERNATIONAL JOURNAL OF GEOGRAPHICAL INFORMATION SCIENCE 卷：28 期：11 頁：2242-2260 DOI：10.1080/13658816.2014.917312 出版年：NOV 2 2014

摘要：This paper proposes a flow-path network (FPN) model to simulate complex surface flow based on a drainage-constrained triangulated irregular network (TIN). The TIN was constructed using critical points and drainage lines extracted from a digital terrain surface. Runoff generated on the surface was simplified as 'water volumes' at constrained random points that were then used as the starting points of flow paths (i.e. flow source points). The flow-path for each 'water volume' was constructed by tracing the direction of flow from the flow source point over the TIN surface to the stream system and then to the outlet of the watershed. The FPN was represented by a set of topologically defined one-dimensional line segments and nodes. Hydrologic variables, such as flow velocity and volume, were computed and integrated into the FPN to support dynamic surface flow simulation. A hypothetical rainfall event simulation on a hilly landscape showed that the FPN model was able to simulate the dynamics of surface flow over time. A real-world catchment test demonstrated that flow rates predicted by the FPN model agreed well with field observations. Overall, the FPN model proposed in this study provides a vector-based modeling framework for simulating surface flow dynamics. Further studies are required to enhance the simulations of individual hydrologic processes such as flow generation and overland and channel flows, which were much simplified in this study.

入藏号：

文獻類型：Article

語種：English

作者關鍵詞：triangulated irregular networks, surface flow, flow-path network model, digital terrain analysis

擴展關鍵詞：HYDROLOGIC RESPONSE; ELEVATION MODELS; TERRAIN MODELS; WATER

通訊作者地址：Chen, Yumin; Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430072, Hubei, Peoples R China.

電子郵件地址：ymchen@whu.edu.cn

地址：

[Chen, Yumin; Bi, Xiaomei] Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430072, Hubei, Peoples R China.

[Zhou, Qiming] Hong Kong Baptist Univ, Dept Geog, Kowloon, Hong Kong, Peoples R China.

[Li, Sheng] Potato Res Ctr, Fredericton, NB, Canada.

[Meng, Fanrui; Xing, Zisheng; Qi, Junyu; Zhang, Chengfu] Univ New Brunswick, Fac Forestry & Environm Management, Fredericton, NB, Canada.

[Wilson, John P.] Univ So Calif, Spatial Sci Inst, Los Angeles, CA USA.

[Li, Qiang] Univ British Columbia, Dept Earth & *Environm* Sci, Kelowna, BC, Canada.

研究方向：Computer Science; Geography; Physical Geography; Information Science & Library Science

ISSN：1365-8816

eISSN：1362-3087