نتایج جستجو برای: distance of drainage

تعداد نتایج: 21181934  

The aim of current research is to assess of landslide susceptibility in the Khalkhal Township, southern Ardabil using an ensemble and new method namely Bayesian and logistic regression (BT-LR) models. At first, landslide inventory map was prepared and then effective factors on landslide occurrence were identified. These factors are slope degree, plan curvature, slope aspect, elevation, landuse,...

تالی خشک, صادق , زارع, محمد, سلمانی, حسین , مقدم نیا, علیرضا,

  In this study, Neuro-Fuzzy model was used to prepare the map of Vaz watershed landslide susceptibility in GIS environment. Location of landslides occurred in the study area was determined through interpretation of aerial photographs and the field monitoring. In the nextstep, factors affecting landslide occurrence such as altitude, lithology, slope, aspect, distance to drainage, distance to ro...

محمدی, مجید, مرادی, حمیدرضا, مهدویفر, محمدرضا, پورقاسمی, حمیدرضا,

One of our first activities in natural resources management and development programs is to acquire knowledge on Landslide Susceptible areas. The aim of this research is landslide hazard zonation in some part of Haraz watershed between Vana village and Emam zadeh Ali, using fuzzy membership functions and fuzzy operators. At first landslide points were recognized using arial photography and field...

ژورنال: علوم آب و خاک 2018

Ziarat drainage basin, in the southern part of Gorgan city, is exposed to mass movement, especially landslide occurrence, due to geologic, geomorphologic, and anthropogenic reasons. The objectives of this study were to predict landslide susceptibility and to analyze the effective factors using rare events logistic regression. In view of this, the map layers of the variables including geology, l...

Journal: :مدیریت آب و آبیاری 0
محمود مشعل استادیار گروه مهندسی آبیاری و زهکشی، پردیس ابوریحان، دانشگاه تهران، پاکدشت - ایران جواد کامرانی کارشناس ارشد گروه مهندسی آبیاری و زهکشی، پردیس ابوریحان، دانشگاه تهران، پاکدشت - ایران فرهاد میرزایی اصلی استادیار گروه مهندسی آبیاری و آبادانی، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، کرج - ایران

concerns about nitrate pollution in groundwater and downstream systems cause development of surface water management system to reduce losses of agricultural drainage water nitrate in subsurface drainage using subsurface irrigation from existing drainage lines, drainage water during the growing season and out of season is controlled. the overall objective of this study was to evaluate the effect...

ژورنال: علوم آب و خاک 2009
محمدی, مجید, مرادی, حمیدرضا, مهدویفر, محمدرضا, پورقاسمی, حمیدرضا,

One of our first activities in natural resources management and development programs is to acquire knowledge on Landslide Susceptible areas. The aim of this research is landslide hazard zonation in some part of Haraz watershed between Vana village and Emam zadeh Ali, using fuzzy membership functions and fuzzy operators. At first landslide points were recognized using arial photography and field...

ژورنال: آبخیزداری ایران 2022

In this study, using the frequency ratio (FR) model, an attempt has been made to identify areas with high groundwater potential of the Sira catchment. Effective factors for preparing groundwater potential map including slope aspect, slope percentage, slope length (LS), Elevation, stream power index (SPI), topographic wetness index (TWI), plan curvature, distance to rivers, distance to roads, di...

Sungun Copper Mine is located in an area with a high level of seismic hazard. Most recently, the Ahar-Varzeqan earthquake with a magnitude of 6.2 on Richter scale occurred on August 11, 2012; at a distance about 40 kilometers away from the mine. Nevertheless, the seismic stability of the final pit wall has not been comprehensively reviewed. In this research, the southwestern wall of the final p...

     Rainfall-runoff from urban areas is one of the available water resources, which is wasted due to lack of attention and proper management. Besides, urban runoff excess of drains capacity causing many problems including inundation and urban environmental pollution. Therefore, harvesting this runoff can provide a part of the required water in urban areas, and also reduce flood and urban inund...

2006
ROBERT E. SKELTON

Abshocr-ReeenHy developed model reduction pmcedurer lead (for the lower order model with the same Mo,. . . , M,-, and single input-ontput ease) to 9th degree systems * fa P M ~ V R,,. . ., R ~ ~ . such apprO-ation~ have been ;Ged qparametes and first q covariance parameters ( M d o v parameters of the causal paR of the power rpecbum) taking prerribed valWe paraMarkov covers (COVER = Covariance ...

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