نتایج جستجو برای: during flood occurrence

تعداد نتایج: 1819002  

Journal: :پژوهش های جغرافیای طبیعی 0
کریم سلیمانی دانشیار مرکز سنجش از دور دانشگاه مازندران محمد بشیر گنبد کارشناسی ارشد دانشکده منابع طبیعی دانشگاه مازندران سید رمضان موسوی مربی دانشکده منابع طبیعی دانشگاه مازندران شهرام خلیقی استادیار دانشکده منابع طبیعی دانشگاه تهران

flood is one of the major natural disasters in iran, which is mostly, affected most parts of the country and caused hazards. therefore, identification of the area with high potential risk of flood occurrence is the main purpose in order to the flood control and reducing its damages. in this research the role of the flood routing in identification of the area with high potential flooding has inv...

Journal: :caspian journal of enviromental sciences 0

rivers are important water resources for human life, but sometimes cause irreparable damages. the flood plains are fertile terrains which are endangered by flood. flood hazard mapping is one of the basic methods in flood fighting. in order to decline flood damages, the simulation of the hydraulic behavior of the rivers during flood occurrence is very important. in this study, areas that are flo...

A. Asghari E. Taghvaye Salimi V. Gholami,

Rivers are important water resources for human life, but sometimes cause irreparable damages. The flood plains are fertile terrains which are endangered by flood. Flood hazard mapping is one of the basic methods in flood fighting. In order to decline flood damages, the simulation of the hydraulic behavior of the rivers during flood occurrence is very important. In this study, areas that are flo...

Journal: :محیط شناسی 0
امین حسین پور میل آغاردان دانشجوی دکتری مهندسی سیستم های اطلاعات مکانی، دانشکده مهندسی نقشه برداری و اطلاعات مکانی، پردیس دانشکده های فنی دانشگاه تهران رحیم علی عباسپور استادیار گرایش مهندسی سیستم های اطلاعات مکانی، دانشکده مهندسی نقشه برداری و اطلاعات مکانی، پردیس دانشکده های فنی دانشگاه تهران فاطمه شیدایی کارشناس ارشد بخش ترویج و آموزش کشاورزی دانشگاه شیراز

flooding, which is an overflow of water, brings massive biological and economic problems all around the world and disrupts many people’s lives. based on several effective factors in flood occurrence as well as unknown relationships between parameters, researchers have used various methods to forecast flood over the past decade. an investigation of the conducted studies on flood forecasting reve...

Journal: :پژوهش های روستایی 0
عبدالرضا رکن الدین افتخاری مهدی پورطاهری طاهره صادقلو حمدالله سجاسی قیداری

rural community and their services, productive activities, because of strong relation with environment, from long bygone were exposed to disastrous natural power. therefore residents of every region by experiment, apply the approaches and measurement to contrast with these events and reduce the damage of them in their community. public attention focused on physical factor and human making envir...

2008
Hongming He Qian Yu Jie Zhou Yong Q. Tian Robert F. Chen

r Publis .030 : +1 413 mass.ed Summary Flood routing processes in the middle Yellow River basin are complex since they consist of three types of flood: bidirectional, convergent and divergent flood flows between the main channel and its tributaries. We propose three computation schemes to simulate the complex flood routing: a simple scheme for a single main channel with no tributary or backwate...

ژورنال: علوم آب و خاک 2014

The occurrence trend of floods in recent years shows that the most of Iran regions located in attacks of destructive floods and loss of life and property of flood damages is increasing. Watershed management practices (WMPs) are one of the superior and appropriate solutions for flood hazards mitigation. The impact of WMPs can be investigated using different approaches. In this study, the direct ...

2016
Hongyan Li Shanshan Bao Xiaojun Wang Hang Lv

Rainstorm weather systems and storm flood characteristics were studied to explore the relationship between the rainstorm weather system, the type of rainstorm, the cause of the flood and the time of occurrence, and some basic characteristics law of storm floods are summarized in the Second Songhua River Basin (Northeastern China). Then, the periodicity of catastrophic years was identified using...

2013
Anchalee Wannasan Pichart Uparanukraw Apichart Songsangchun Nimit Morakote

The survey was carried out to investigate the presence of potentially pathogenic free-living amoebae (FLA) during flood in Chiang Mai, Thailand in 2011. From different crisis flood areas, seven water samples were collected and tested for the presence of amoebae using culture and molecular methods. By monoxenic culture, FLA were detected from all samples at 37 °C incubation. The FLA growing at 3...

Journal: :جغرافیا و مخاطرات محیطی 0

introduction active mending rivers are the most dynamic and sensitive parts of the fluvial landscapes. meandering rivers suffer a large geomorphic changes during the annual flood events. based on large flood evidences, reconstruction of the channel bed migration will be possible, which is use for evaluation of future evaluation and flood risk assessment in the flood plain areas. the morphologic...

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