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مقاله Analysis of Regional Droughts by Standardized Precipitation Index (SPI), Percent of Normal (PN) and Z Standard Indexes in Kohghiloieh and BoirAhmad Province تحت word دارای 9 صفحه می باشد و دارای تنظیمات در microsoft word می باشد و آماده پرینت یا چاپ است

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بخشی از متن مقاله Analysis of Regional Droughts by Standardized Precipitation Index (SPI), Percent of Normal (PN) and Z Standard Indexes in Kohghiloieh and BoirAhmad Province تحت word :

سال انتشار: 1384

محل انتشار: اولین کارگاه مشترک ایران و کره در مدلسازی اقلیم

تعداد صفحات: 9

نویسنده(ها):

Akram Hedayati Dezfuli – Faculty Member of Atmospheric Science and Meteorological Research Center (ASMERC),

چکیده:

The identification and monitoring of drought are of great importance in the most regions of Iran. Because of a-periodic distribution of precipitation that causes many regions and many provinces of Iran are prone to drought. Kohgiloieh and BoirAhmad province is in the south west of Iran.
Drought characteristics were derived for this region to identify regional drought periods and the regional coverage of droughts having a given severity. In this work we analyzed drought in Kohgiloieh and BoirAhmad province (intensity, duration, trend and area) using SPI, five time
scales (3, 6, 12, 24 and 48 months) , percent of normal precipitation index and Z standard were used. Results indicate that frequency of short range droughts in the region was 13 in the period 1362-1381 but that in long range droughts, it was less, and duration in long range droughts was
very long (80 months). In addition, severe droughts in the years of 1372 and 1378 covered more than 80% surface area of the region.

 

 

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