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Journal of Applied Sciences
  Year: 2008 | Volume: 8 | Issue: 3 | Page No.: 516-521
DOI: 10.3923/jas.2008.516.521
 
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A New Approach for Isochrone Mapping in One Dimensional Flow for Using in Time Area Method

Ali Reza Shokoohi

Abstract:
This research investigated isochrone delineation methods as the most important component of Time-Area method. The Time-Area method is one of the most suitable and the simplest techniques of watershed routing and can be potentially used as a distributed model. In this research Kinematic wave theory was used for validation of isochrone delineation methods. Almost in all of the mentioned methods, it was shown that time of concentration is proportional to wave travel length raised to a power. Obtained results showed that using approximate or empirical methods for determining location of isochrones, if one wants to route the flow on watersheds by time-area method, HEC-1 proposed approach is recommended. However the best result for one dimensional (parallel) flow, achieved by using a power equal to 0.67. This was the power which kinematics wave theory yields.
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How to cite this article:

Ali Reza Shokoohi , 2008. A New Approach for Isochrone Mapping in One Dimensional Flow for Using in Time Area Method. Journal of Applied Sciences, 8: 516-521.

DOI: 10.3923/jas.2008.516.521

URL: https://scialert.net/abstract/?doi=jas.2008.516.521

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