a corrected time-area technique for one-dimensional flow
نویسندگان
چکیده
time–area method is one of the most widely applied techniques of watershed routing, and can be potentially used as a distributed model. in this paper, a fundamental flaw in the arrangement of subareas in the original time-area histogram is identified for one-dimensional flow. this is conducted on the basis of comparing time-area hydrograph with that of the kinematic wave theorem. accordingly, a revised time-area algorithm is developed as a substitute for the original time-area. it is proved that in the revised approach, subareas must be reversely arranged. it is also shown that the revised time-area hydrograph is in perfect agreement with the hydrograph derived by the kinematics wave theory.
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عنوان ژورنال:
international journal of civil engineeringجلد ۴، شماره ۱، صفحات ۳۴-۴۱
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