توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱Optimal Crop Planning and Monthly Water Demand Forecasting Based on Consideration of Climate Conditions by Fuzzy Inference Systems
اطلاعات انتشار: هشتمین کنگره بین المللی مهندسی عمران، سال
تعداد صفحات: ۸
A logical and correct prediction of water demands is an important parameter for allocating of water resources. The water demands are depended on cropping area and the type of crops. On the other hand, the cropping area is depended on farmers’ decision. They have decided on the extensiveness of the cultivated area and the type of crops with regard to different parameters such as climatic and economic conditions, the demand of consumers and supports of governments. In these parameters the climatic conditions and their influence on water resources could have a high impact on the farmers’ decision for cropping. The scrutiny of experiences and ideas of users, stakeholders, farmers and decision makers could be useful to accomplish a clear determination of water demands. In this paper, we have studied the climatic conditions and their influence on cropping and forecasting the demands of water in Najafabad plain. For these goals the Fuzzy Inference Systems (FIS) have been used. This method is used for creating a relation between parameters which are defined as climatic conditions and their influence on water demands. The consequences of the problem are the total annual cropping area and the lean of farmers to basic crops.<\div>

۲Hydrological Response to Climate Change Impacts in the Karkheh River Basin
نویسنده(ها): ،
اطلاعات انتشار: اولین کنفرانس بین المللی و سومین کنفرانس ملی سد و نیروگاههای برق آبی، سال
تعداد صفحات: ۱۶
This paper addresses the impacts of climate change on hydrology and water resources in the Karkheh River Basin (KRB). KRB is the third most productive basin in Iran, and has a great potential for hydropower generation. A total potential capacity of reservoirs in this basin is more than 15,000 mcm of which 40 percent has been built. The sensitivity of the KRB to potential climate change is investigated by simulating basin streamflow response under different climate change scenarios. A conceptual rainfall–runoff model (IHACRES) is first calibrated by using hydrological and streamflow observations. The model is then applied by downscaled two general circulation model outputs (CGCM3 and HadCM3) under three emission scenarios (A1B, A2, and B1). Results show that in the short–term, annual mean temperature will increase by about 0.9°C, but the annual amount of precipitation will not change significantly. Also, annual streamflow will decrease 10 to 15 percent. In mid– and long–term, respectively, temperature will increase by more than 2.0°C and 4.0°C, precipitation will decrease by about 15 and 17 percent, and annual streamflow will decrease by about 25 and 32 percent.<\div>

۳Climate Change Impacts on Hydropower Development Projects in Karkheh River Basin
نویسنده(ها): ، ،
اطلاعات انتشار: اولین کنفرانس بین المللی و سومین کنفرانس ملی سد و نیروگاههای برق آبی، سال
تعداد صفحات: ۱۳
According to climate change, development of future hydropower generation is becoming more challenging. Clime change influences on hydrological cycle directly. In this study the sensitivity of the Karkheh River Basin to potential climate change is investigated by simulating basin streamflow response and hydropower production under different climate change scenarios. In order to examine these potential effects, outputs of the simulation of basin streamflow response with two general circulation models outputs under two greenhouse–gas emissions scenarios for three time horizons. These scenarios were applied into an integrated water resources management model. The results show that annual and seasonal hydropower production indicators in mostscenarios will fall because of drier hydrologic conditions. These reductions will be more serious in long term planning (2070’s). These failures indicate that operation rules curves which were developed under historical data in Karkheh River Basin integrated water resources planning would not be appreciated for climate change condition. Therefore, the adaptation of reservoir operation rules for each dam should be accomplished under various climate change scenarios.<\div>

۴Dez Water Resources System Scenario Analysis by System Dynamics Approach
اطلاعات انتشار: اولین کنفرانس بین المللی و سومین کنفرانس ملی سد و نیروگاههای برق آبی، سال
تعداد صفحات: ۱۲
To meet the increasing water demand in Dez basin, some structural changes in the Dez dam as well as upstream water abstraction and regulation projects have been proposed. These changes and the new projects will affect water regulation and power generation of the system. This paper analyses the Dez reservoir performance for different basin demand and development scenarios. The multipurpose Dez reservoir in Khuzestan Province, south west of Iran, commenced operation in 1965. The dam is 203 meter high with a reservoir of 3000 mcm storage capacity. The main purposes of Dez reservoir are hydroelectric power generation, flood control, and irrigation water supply. The structural changes in the system as well as the upstream water abstraction and regulation projects which affect water regulation and power generation of the system include:· Upstream water abstraction by constructing water projects in Sezar Subbasin · Upstream interbasin water transfer to Cheshmeh Langan and Qomrud in Bakhtiary Subbasin · Upstream Bakhtiary reservoir project for Hydropower generation · Expansion of existing power plant (65 MW to 90 MW for eight available units) · Installation of second power plant (eight units of 90 MW each) · Dez Dam heightening up to 10 meter for increasing energy production and water regulation capacity Implementation of all or different combinations of the above development projects,will change the planned performance of the Dez reservoir both in terms of energy production and water supply. In this paper the overall effect of each alternative on the performance and output of the system is simulated and results are analyzed and discussed. System Dynamics (SD) approach is employed that allows the users to visualize the outcome and performance of each management strategy in an interactive user friendly media.<\div>
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