| نویسندگان | Seyed Hassan Alavinia - Seyed Javad Sadatinejad - Arash Malekian - Hoda Ghasemieh |
|---|---|
| نشریه | BIOLOGICAL FORUM-AN INTERNATIONAL JOURNAL |
| ارائه به نام دانشگاه | کاشان |
| شماره صفحات | ۲۷۴-۲۸۴ |
| شماره مجلد | ۸ |
| نوع مقاله | Full Paper |
| تاریخ انتشار | ۲۰۱۶-۰۸-۲۸ |
| رتبه نشریه | ISI |
| نوع نشریه | چاپی |
| کشور محل چاپ | هند |
چکیده مقاله
Increase or decrease of the amount of rainfall than average long-term conditions causes the occurrence of two phenomena which is too important, including flood and drought. Drought is a climatic
event that are represented in different forms in large parts of Iran and will affect ordinary life people in these areas. Predicting the drought could reduce as much as many fatal and lethal effects of this phenomenon. Although these predictions may have a percentage error. Considering that different forms of drought, Meteorological drought is the first type of drought which occurs, by Analysis of data different, types of drought can be predicted. Reduction in rainfall affected on groundwater systems. Knowledge of these effects is absolutely vital to planning for damage reduction and appropriate response to the effect of drought. It also helps decision makers identify and reduce vulnerability to drought. In this study, meteorological drought calculated by standardized precipitation index (SPI) in different time scales in Isfahan-Borkhar plain. Also, status of water table of aquifer indicates by groundwater resource index (GRI) in Isfahan-Borkhar aquifer. There are a significant correlation between large-scale SPI and GRI, Especially between SPI-48 and GRI. This means that the groundwater drought happens after meteorological drought with a 48-month delay. Also, The results indicate that uncontrolled exploitation of groundwater resources have a huge impact on the aquifer water levels. The results showed that wet and dry periods have occurred repeatedly at the short time scales SPI, but even when rainfall has been appropriated in some years, the groundwater level had been downward. Also, drought map zoning were provided based on GRI values, which indicates extremely dry in south, northwest and north of aquifer.