STUDY OF PHYSICAL PROPERTIES AND SURFACE CIRCULATION OF THE CASPIAN SEA USING HYCOM MODEL

سال انتشار: 1397
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 330

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شناسه ملی سند علمی:

ICOPMAS13_080

تاریخ نمایه سازی: 6 بهمن 1397

چکیده مقاله:

The Caspian Sea, the world’s largest inland enclosed water body, consists of three basins namely northern, middle and southern (Aubrey et al., 1994). The enclosure and thegrowth of oil extraction from this lake in recent years have been an important issue in terms of biological contamination. The study of the Caspian Sea is significant for various aspects of research because of its oceanography specific characteristics. Due to the limitation of observation data in this area, numerical modelling is the best method to develop our physical insight into the principles of the phenomena which occur in the Caspian Sea. There are a number of numerical models that are used by researchers in the last 10 years to investigate physical oceanography properties in this basin. The seasonal circulation based on a coupled sea hydrodynamics, air-sea interaction and sea ice thermodynamics model of theCaspian Sea were investigated by Ibrayev et al (2010) and Gunduz and Özsoy, (2014). The effect of fresh water inflow to the Caspian Sea on seasonal variations of salinityand circulation and pattern of the Caspian Sea surface current has also been studied using HYCOM model (Kara et al, 2010). Shieh et al., (2016) used the COHERENS(Coupled Hydrodynamical Ecological model for Regional Shelf seas) to study the impact of wind and thermal forcing on the seasonal variation in this basin.In this paper, we investigate the physical parameters of the water (temperature, salinity, and density) and circulation pattern in the Caspian Sea using the HYCOM ocean model.One the important feature of the model compared to other works (e.g. Shieh et al., 2016) is the inclusion of ice. The effects of ice on the distribution of temperature and salinityin the northern Caspian is very important due to its thermodynamic effects.

نویسندگان

Abdossamad Abdossamad

Faculty of Marine Science and Technology, Science and Research Branch, Islamic Azad University, Iran

Abbas Aliakbari Bidokhti

Faculty of Marine Science and Technology, Science and Research Branch, Islamic Azad University, Iran

Javad Babagolimatikolaei

Institute of Geophysics, University of Tehran, Iran