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Abstract
Short term rainfall is a form of liquid precipitation that rain suddenly, and interrupt quickly too. Awareness about rainfall occurrence and its harmful impacts, significantly, will help performing developmental projects and reducing damages. Bandar- e Anzali, according to its climatic conditions and its specific geographical situation has always damaged from natural disasters and accidents, and the amount of these damages is considerable. Our knowledge and awareness about short term rain and its occurrence, severity, duration, and its continuity in different intervals have significantly contributed to meet it properly, and will lead to appropriate decision-making to construct urban and non-urban structures.
Accordingly, the present study has performed to identify, regulate and predicting short-term rainfalls in Anzali. Research area is the city of is Bandar-e Anzali and the period of study is 30 years. The results indicated that changing the amount of rainstorm, has been done in different intervals of time. As a result, on the basis of precipitation intensity in Bandar- e Anzali, the highest amount of rainfall has been in intervals of 15-minute, and its lowest amount has been in 1440 minutes. As well as evaluating rainstorm data, with different statistical distributions, to determine fundamental equations of prediction indicate that third-degree logarithmic equations can be applied in the most cases (84 percent), because, by applying obtained equations, developing a proper estimate on the amount of rainstorm in per unit of time, along with return period of plan, will be possible.
Keywords: 24 Hours Short Term Rainfall; Intensity – Duration; SMADA; Model; Bandar-e Anzali
Islamic Azad University
Rasht Branch
Faculty of Humanities
Department of Physical Geography
Presented in partial fulfillment of the requirements for (M.A.) degree
Title:
A Survey on 24 Hours Short Term Rainfall, Bandar Anzali
Supervisor:
Dr. Bahman Ramezani
Advisor:
Dr. Parviz Rezaee
Author:
Farkhondeh Maghsodiyeh Kohan
Summer 2013
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مطلب مرتبط :   پایان نامه با کلید واژگانکوتاه مدت، دوره بازگشت، بندر انزلی

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