Determining the rate of drought meteorological and hydrological condition in Kerman province
Subject Areas :محمود Salari 1 , اصغر Tabibian 2
1 - عضو هئیت علمی دانشگاه آزاد اسلامی واحد سیرجان
2 - شرکت آب منطقهای کرمان
Keywords: Kerman, meteorological drought, hydrological drought, sub-basins, index rivers , ,
Abstract :
Although kerman, as a part of Iran Plateu, has a dry to very dry climate, few changeshappen in its climate due to some factors including height, humidity and weather frontsenter this region; in this case, dry and rarely mediterianian climates can be seen inheights of Lalehzar and Jabalbarez Mountains. To determine metropoligical drought,Kerman Province has been divided into suitable sub-basins and Regional EvaluationStatistical Distribution Method has been used. Moreover, Regional Evaluation has beenexamined using Standard Distribution Index, arithmetical mean and ratio median.In thissurvey Rainfall stations with suitable distribution with a long period of meteorologicaldrought statistics between 1968-2007 for 39 years are selected.the surveys showed thatthe drought period in Kerman is longer that wet year period.More over by selecting 4index hydrometry stations with acceptable statistics and generalizing to four region ofKavir lut,Jazmorian,Daranjir desert,Sirjan Abarghoo desert were determined.Since the1999-2000 Kerman region entered drought hydrological situation that continued till2007-08 and the surface runoff production inadequancy rate to the long period.averagewere determined to 18 billion cubic meters, and the years of 1968-69, 1999-2000, 2005-06, 2007-08 were the driest years and in most years, some portious of state had bearedsome drought with different return period.