نتایج جستجو برای: determining boundaries snow the

تعداد نتایج: 16072425  

2013
Christopher M. sharp Kenneth F. abrahaM Gary burness

—Understanding factors that determine sources of nutrients for reproduction is vital to interpreting different lifehistory strategies used among species, within species, and among taxa. We used stable carbon isotope analysis (δ13C) to compare the relative use of endogenous and exogenous nutrients during egg synthesis between two species of geese, Canada Geese (Branta canadensis interior) and Le...

Journal: :Int. J. Applied Earth Observation and Geoinformation 2017
Caitriana M. Steele John Dialesandro Darren James Emile Elias Albert Rango Max Bleiweiss

Snow-covered area (SCA) is a key variable in the Snowmelt-Runoff Model (SRM) and in other models for simulating discharge from snowmelt. Landsat Thematic Mapper (TM), Enhanced Thematic Mapper (ETM + ) or Operational Land Imager (OLI) provide remotely sensed data at an appropriate spatial resolution for mapping SCA in small headwater basins, but the temporal resolution of the data is low and may...

نیری, هادی, چاره خواه, بهرام, کرمی, محمد رضا,

Risk is an inevitable part of life, every day people are somehow at risk. Different risks in various forms and perspectives have different functions. Kurdistan province, with various heights and relatively good rainfall, It results the country's cold spots. Since most of seasonal rainfall occurs in winter, Snow cover is often the domain and passes it hillsides. One of the concerns of people in ...

خواجه ‌الدین, سیدجمال ‌الدین,

Astracantha adscendens is an endemic species in Iran growing on alpine and above alpine timberline habitats on the Zagross Mountain Range. These habitats are characterized by steep slopes, heavy snowfalls and long ice formation periods. The present study was carried out in Chelgerd, Bakhtiari, and Fereidan, Isfahan. Slopes, elevation above sea-level, and magnetic north azimuth were measured. Th...

2014
Parviz Rezaei

Original scientific paper Determining snowmelt runoff share of watershed basins with snow and wet snow regimes is one of the main concerns of the experts in water resources field, assessment of which has been done so far with difficulties and high rate of error due to lack of snow survey and weather stations in highlands of basin and use of traditional surveying methods. Lack of integrated mana...

Journal: :مرتع و آبخیزداری 0
علی فتح زاده استادیار دانشکدة کشاورزی و منابع طبیعی، دانشگاه اردکان، ایران سمیه ابدام کارشناس ارشد آبخیزداری، دانشکدة منابع طبیعی، دانشگاه یزد، ایران

[1] ‏ahmad, s. and simonovic, s.p. (2005). an artificial neural network model for generating hydrograph from hydrometeorological parameters, j. hydrol, 315, 236-251. [2] agarwal, a., mishra, s.k., ram, s. and singh, j.k. (2006). simulation of runoff and sediment yield using artificial neural networks, biosys. eng, 94(4), 597-613. [3] amini, m., abbaspour, k.c., khademi, h., fathianpour, n., afy...

2011
Christian Pedersen Albert Mihranyan Maria Strømme

Interfaces between individual ice crystals, usually referred to as grain boundaries, play an important part in many processes in nature. Grain boundary properties are, for example, governing the sintering processes in snow and ice which transform a snowpack into a glacier. In the case of snow sintering, it has been assumed that there are no variations in surface roughness and surface melting, w...

Journal: :the international journal of humanities 2013
nastaran saberi saeid homayouni mahdi motagh

geographic information and analysis provide a wide range of data and techniques to monitor and manage natural resources. as an important case, in arid and semi-arid areas, water management is critical for both local governance and citizens. as a result, the estimation of water potential brought by snowmelt runoff and rainfalls seems to be very useful and important for these areas. hydrological ...

2007
B. S. Gilfedder

Iodine is an essential trace element for all mammals and may also influence climate through new aerosol formation. Atmospheric bromine cycling is also important due to its well-known ozone depletion capabilities. Despite precipitation being the ultimate source of iodine in the terrestrial environment, the processes effecting its distribution, speciation and transport are relatively unknown. The...

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