Extracting drainage networks
نویسندگان
چکیده
A novel algorithm with heuristic information for extracting drainage networks from raster DEMs W. Yang, K. Hou, F. Yu, Z. Liu, and T. Sun College of Computer Science, Northeast Normal University, Changchun, 130017, China College of Computer Science and Technology, Changchun Normal University, Changchun, 130032, China College of Computer Science and Technology, Jilin University, Changchun, 130012, China College of Urban and Environmental Sciences, Northeast Normal University, Changchun, 130024, China Received: 29 December 2009 – Accepted: 6 January 2010 – Published: 20 January 2010 Correspondence to: T. Sun ([email protected]) Published by Copernicus Publications on behalf of the European Geosciences Union.
منابع مشابه
A flooding algorithm for extracting drainage networks from unprocessed digital elevation models
A new method for extracting the drainage network from a digital elevation model (DEM) is presented. It is based on the well-known D8 approach that simulates the overland flow but uses a more elaborate water transfer model that is inspired by the natural behaviour of water. The proposed solution has several advantages: it works on unprocessed DEMs avoiding the problems caused by pits and flats, ...
متن کاملComparison Density and Fractal Dimension of Drainage Networks in Different Scales and Precision Different (Case Study: Ilam Watersheds)
Every phenomena in the nature, despite the complexity of the subject, has certain rules and regulations. River pattern and behavior as one of the most complex natural phenomena to this is not an exception. Depending on geomorphologic, climatic, topographic and erosive conditions, the waterways exhibit different patterns and behaviors. One of the parameters which can be achieved using the comple...
متن کاملThe Application of fractal dimension and morphometric properties of drainage networks in the analysis of formation sensibility in arid areas (Case Study, Yazd-Ardakan Basin)
Introduction: Many natural phenomena have many variables that make it difficult to find relationships between them using common mathematical methods. This problem, along with the impossibility of measuring all elements of nature, has led to a major evolution in the way of understanding and explaining phenomena. In this way, one can use the fractal geometry with the theory that many natural phen...
متن کاملAutomated suitable drainage network extraction from digital elevation models in Taiwan's upstream watersheds
Automatically extracting drainage networks from digital elevation models coupled with the constant stream threshold value is a regular method. These extracted networks can be verified by comparing the channel initiation points with those from real networks. From the results analysed, the differences in channel initiation points will affect the network geometries, geomorphological indices and hy...
متن کاملAutomatic Extraction of Drainage Networks from DEMs Base on Heuristic Search
Computer aided automatic Extraction of drainage networks from DEMs can promote the efficiency of regional water resource prospecting and assessment in GIS. Extracting drainage networks from raster DEMs is a necessary requirement in many applications of GIS, and determining surface water flow direction is a fundamental problem. In a raster environment, surface water flow direction of each cell c...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2010