نتایج جستجو برای: years return periods

تعداد نتایج: 1147045  

شعبانی بازنشین, آرمان, عمادی, علیرضا, فضل اولی, رامین,

Flood is one of the natural hazards that its frequent occurrence has increased in the recent years and the damages of it, had affected apart of country in every year. Prioritization of sub basins has an important effect in watershed management. The purpose of prioritization of sub basins is offer a pattern for control and decrease flood hazards and evaluating the role of each sub basin in peak ...

Journal: :فیزیک زمین و فضا 0
سید حسن موسوی بفروئی دانشجوی دکتری، گروه فیزیک زمین، مؤسسه ژئوفیزیک دانشگاه تهران، ایران نوربخش میرزائی دانشیار، گروه فیزیک زمین، مؤسسه ژئوفیزیک دانشگاه تهران، ایران الهام شعبانی استادیار، گروه فیزیک زمین، مؤسسه ژئوفیزیک دانشگاه تهران، ایران مرتضی اسکندری قادی دانشیار، دانشکده مهندسی عمران، پردیس دانشکده های فنی، دانشگاه تهران، ایران

growing environmental and social concerns, both on the part of decision makers and public opinion, have brought a new perspective to the perception of hazard assessments a valid alternative in the long-term, and an effective complement in short and medium terms, to traditional design procedure for a resistant and safe environment. results of the gradual development of research on the probabilis...

Journal: :Journal - Oklahoma Dental Association 1981

The period of limitations is the period of time in which you can amend your tax return to claim a credit or refund, or that the IRS can assess additional tax. The below information contains the periods of limitations that apply to income tax returns. Unless otherwise stated, the years refer to the period after the return was filed. Returns filed before the due date are treated as filed on the d...

Journal: :مرتع و آبخیزداری 0
سیده سارا سعادتی سعید سلطانی سعید اسلامیان

drought is universal phenomenon that can occur everywhere and can cause harmful impacts on human beings and natural ecosystems. thus, it is very important to study drought character ristics part of for water resources management. in this study, the standardized precipitation index (spi) is used for drought frequency analysis in isfahan province. after collecting the precipitation data in the pr...

A. Abrishamchi and K. Farzamnia, S. S. Eslmian,

Accurate estimate of flood flows at selected return periods is a fundamental step in flood control and design of hydraulic structures. Due to the inadequacy or unavailability of flood flow records in several western catchments of Iran, traditional regional flood frequency methods lead to remarkable estimate errors, particularly for long return periods. In this research, discriminant analysis is...

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. Abrishamchi and K. Farzamnia, S. S. Eslmian,

Accurate estimate of flood flows at selected return periods is a fundamental step in flood control and design of hydraulic structures. Due to the inadequacy or unavailability of flood flow records in several western catchments of Iran, traditional regional flood frequency methods lead to remarkable estimate errors, particularly for long return periods. In this research, discriminant analysis is...

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