3172

3048

كارشناسي ارشد

﴿بيابان زدايي﴾

اصفهان : دانشگاه صنعتي اصفهان

1384

چهارده،115،[II]ص.: مصور،جدول،شكل،نمودار

ص.ع.به فارسي و انگليسي

جمال الدين خواجه الدين، سعيد سلطاني كوپايي

احمد مختاري

عليرضا سفيانيان، افشين هنربخش

1398/07/16

كتابنامه

منابع طبيعي

مهندسي منابع طبيعي

1398/07/16

ID3048

به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي

AbstractSnow covered area is a huge water resource on most part of the world and mountainousareas Snow cover and its equivalent water supplies 1 3 of the water requirements forfarming and its land irrigation throughout the world Therefore water contents estimationof a snow cover or estimation of snowmelt runoff is necessary for Hydrologists Severalsnowmelt forecasting models have suggested which most of them require continuousmonitoring of snow cover The most efficient means of monitoring snow cover patches areremote monitoring through satellites imagery Among many models snowmelt runoffmodel SRM is widely used to forecast snowmelt runoff estimation by daily temperature This model uses only one daily temperature in each zone and assumes fixed coefficientsfor melting season duration so the model is not respond properly on some parts of theworld To calculate the snowmelt runoff precisely a simple model is useful thereafterconsidering the basics of the existing model and eliminating its problems a new methodinitiated that it is simple and applicable for this purposes In this research snowmelt runoffforecasted in a new scheme using maximum and mean daily temperatures two means ofsnow melt measuring devices and MODIS data According to the outcome results one canmap snow covered area with sufficient precision using MODIS data while the map isuseful to related calculations about snow patches In addition after studying the satelliteimages the snow cover changes predicted in a new ways for the periods that the MODISdata was not available The produced maps controlling with ground truths confirmed itsvery high precisions The melted water resulted from temperature changes were modeledas equations which their calculated amounts are comparable to the ground truths verywell With regards water flow changes equations calculated to estimate the daily meltedwater flow These equations are comparable to the ground truths as well Since there areproblems with estimation of snowmelt runoff with existing SMR model the studied areadivided in smaller working areas to apply the temperature directly on each work areaindependently Therefore the area separated in various aspects and on each aspect differentcoefficients considered to estimate the water flow in each segment Finally we concludethat the new established methods in the present study are adequately accurate and one canuse for the future estimations of the studied area

جمال الدين خواجه الدين، سعيد سلطاني كوپايي

احمد مختاري

عليرضا سفيانيان، افشين هنربخش