8049

7484

كارشناسي ارشد

عمران - آب

اصفهان: دانشگاه صنعتي اصفهان، دانشكده عمران

1391

نه،98ص.: مصور،جدول،نمودار

ص.ع.به فارسي و انگليسي

حميدرضا صفوي، كيوان اصغري

30/7/92

جهانگير عابدي كوپايي، آزاده احمدي

1395/02/22

مهندسي عمران

ID7484

به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي

104 h doctorsafaie@cv iut ac ir Date of Submission Department of Civil Engineering Isfahan University of Technology Isfahan Iran Degree M Sc Language Farsi Supervisor Dr H R Safavi hasafavi@cc iut ac ir Dr K Asghari kasghari@cc iut ac ir Abstract Drought is a stochastic natural hazard that is instigated by intense and persistent shortage of precipitation Following an initial meteorological phenomenon subsequent impacts are realized on agriculture hydrology and with delay on groundwater Among the natural hazards droughts possess certain unique features In addition to delayed effects droughts vary by multiple dynamic dimensions including severity and duration which in addition to causing a pervasive and subjective network of impacts makes them difficult to characterize Development and assessment of drought indices for estimating the severity of drought in groundwater provides appropriate approaches and plans to deal with this destructive phenomenon This study has been carried out for defining an integrated index including main factors of drought and applied to the Zayandehrood river basin in the central Iran plateau as a study area Like most areas in Iran many other drought indices have been developed over the years with monitoring and forecasting purposes but some of few drought indices are focused on the groundwater resources for this basin An integrated index includes various factors such as meteorological hydrological agricultural socio economic and environmental drought In recent years due to shortages of surface water resources the study area has been faced with increasing use of groundwater and consequently a severe reduction in groundwater resources In this study a novel integrated groundwater drought index IGDI is presented as a reliable and useful tool in a multi analysis approach for monitoring drought conditions The long term climate data are used for assessment In designing of integrated index we have used combination of static and dynamic layers Static layers including soil in three categories surface saturated and unsaturated hydraulic conductivity and land use Dynamic layers including infiltration of precipitation groundwater levels thickness of saturated layer released water from upstream dam and electrical conductivity of ground water All static and dynamic layers representing spatial maps of different factors were prepared and compiled using Geographic Information System Arc GIS software Each of static and dynamic factors has been categorized in to various sub classes to distinguish their degree of susceptibility to drought and have been using a weighing scheme Integrated index was verified by observed groundwater droughts in the Zayandehrood basin Results show that based on values of integrated index water year was very wet year and water year was very extremely drought year Keywords Drought Integrated Index Zayandehrood basin Groundwater resources Geographic Information System GIS PDF created with pdfFactory trial version www pdffactory com

حميدرضا صفوي، كيوان اصغري

جهانگير عابدي كوپايي، آزاده احمدي