Title : ( Assessment of Drought in a long time period, using standardized precipitation index (SPI). A case study of Mashhad area )
Authors: Seyed Hossein Sanaei Nejad ,
Full TextAbstract
Drought is a normal part of the climate in all regions with high or low precipitation. Drought occurs when soil moisture from rainfall is less than normal for a specified period of time. Analyzing of the statistic period of 32 years (1968- 1999) in Mashhad synoptic weather station shows drought is a normal event in this climate. The data analysis for a long period of time shows one sever or long term duration drought in 10 years. The analysis also makes this fact clear, while drought duration and frequency have been increased; its severity has been decreased in the recent years. Based on this study, the most sever drought in the statistic period occurred in 1977 and 1992 in the wettest year. The results also show that if droughts with short time duration merge together, they can cause a long time duration drought with lower strength.
Keywords
, Drought, SPI, Khorasan
@inproceedings{paperid:1007897,
author = {Sanaei Nejad, Seyed Hossein},
title = {Assessment of Drought in a long time period, using standardized precipitation index (SPI). A case study of Mashhad area},
booktitle = {Thiird Symposium for European Freshwater Sciences},
year = {2003},
location = {ادینبورگ, ENGLAND},
keywords = {Drought; SPI; Khorasan},
}
%0 Conference Proceedings
%T Assessment of Drought in a long time period, using standardized precipitation index (SPI). A case study of Mashhad area
%A Sanaei Nejad, Seyed Hossein
%J Thiird Symposium for European Freshwater Sciences
%D 2003
