عنوان مقاله [English]
نویسندگان [English]چکیده [English]
This research has been carried out in the southern coasts of Caspian Sea. This
area consists of about 150 catchments. Most of the rivers have small basin, covered by
vegetation and confined by sea and mountains.
In order Shafarood for the 1961-98 period were analysed. This period has nearly
experienced 558 flood from which from which 59% belong to talar and Shafarood
catchments, respectively. To determine the synoptic patterns of the floods, the surface
and 500hP daily maps of 36 floods were analyzed. The result of the study showed that:
The flood of Shafarood occurred mostly in the September to November period
and Talar floods in March and April.
11% of the floods occurred simultaneously in both basins. The synoptic pattern
respolsible fore these floods was the west of the Caspian Sea.
The other floods were occurred when the through axis was moved over Caspian
Sea or to its east coasts. In These conditions Surface cyclones and anticyclones were
The main moisture sources of the floods were the Medeaterian Sea for tha talar
Basin and the Caspian Sea for the Shafarood Basin.