ABSTRACT

Sea water temperature and current velocities observed at the offshore areas of Akburun region in the Çeşme strait, which separates the Çeşme peninsula and Samos island. For these measurements, two ENDECO 174 type current meters were used. Measured velocity and temperature jumps were observed and discussed.

INTRODUCTION

The Aegean sea is a semi -closed basin in the eastern Mediterranean sea, having many islands with rugged topography. It is remarkable for its beauty and historical and economic importance. However, not many new information have been published recently in oceanographic Journals about this sea. In this investigation salinity, temperature and current velocities were measured around the offshore areas of Akburun region in the Çeşme strait (which is narrow 6.5 km. and shallow 42 m., a strait separating the Çeşme peninsula, Turkey, in the east and Samos island, Greece, in the west) will be discussed. It is important to note that the main part of the Çeşme strait can trap long waves generated by northerly winds. As it is well known, the tides of Mediterranean are rather weak (Pond, Piccard,1983). Also the tides have some importance in this region, generally the tides of Akburun and Tatlicak areas can reach 20–25 cm. The corresponding currents resulted to be essentially barotropic. They have a semidiurnal periodicity and can reach 35 cm/sec. These values are rather intense for the Mediterranean sea. Moreover the comparison of velocities inside sill (Akburun station, n.6) and a more distant station (Tatlicak station, n.7) could be interest to underline the effect of the strait on the marine current. As it is well known, the tides of Mediterranean are rather weak (Pond, Piccard,1983). Also the tides have some importance in this region, generally the tides of Akburun and Tatlicak areas can reach 20–25 cm. Corresponding currents resulted to be essentially barotropic. These values are rather intense for the Mediterranean sea.

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