Study of Sea Level Variations during Passage of Meteorological Cyclones over the Qeshm Channel

The main purpose of this study is the survey of the atmospheric low pressure effects at sea level oscillations in the Qeshm Channel. For this purpose, the curves of the pressure on the Persian Gulf and Oman Sea, during the passing of the atmospheric low pressure system, are extracted across the region. During the time of occurrence of these events, sea level oscillations in the coastal areas of northern Persian Gulf and Oman Sea at the time of the presence of atmospheric low pressure system, with the same surface pressure in Qeshm channel, has been analyzed. In this analysis by filtering the dominant tidal components, the share of atmospheric low pressure are extracted at the sea level oscillations The results show that fluctuations of sea level due toatmospheric low pressure in Qeshm Channel is about 70 to 100 percentage larger than fluctuations of sea level in other parts of the low pressure systems with similar surface pressure. The presence of atmospheric low pressure systems usually increases daily average of Qeshm Channel water level by about 20 to 40 cm.