Şeniz UÇKAÇ

Sea surface variability in the Aegean Sea

Ege Denizi'nde fiziksel parametreler iklimsel değişimler, tatlısu girdileri ve su döngüsü gibi faktörlere bağlı olarak yer ve zamana göre değişim göstermektedir. Farklı su kütleleri, özellikle Çanakkale boğazından gelen soğuk Karadeniz suyu ve güney kısımdan girmekte olan Levanten suyu Ege Denizi su özelliklerinin karmaşık yapısına katkıda bulunmaktadır. B.u çalışmada Ege Denizi yüzey suyu sirkülasyonu ve fiziksel özelliklerinin değişimi yerinde ölçümler kullanılarak 1986-1994 periyodunda incelenmiştir. Yüzey verisi analizleri yüksek tuzluluk ve yoğunluk değerlerinin ilk olarak Kuzey Ege'de oluştuğunu göstermektedir.

Anahtar Kelimeler:

su akışları, Türkiye, hidrolojik faktörler, oşinografi, Ege Denizi, su sıcaklığı, tuzluluk, yüzey akışı

Ege Denizi'nde yüzey suyu değişimleri

The physical parameters show seasonal and spatial variability depending upon climatic changes, freshwater input and water exchange throughout the Aegean Sea. Different water masses, especially colder Black Sea Waters (BSW) advected from the Strait of Çanakkale, and warmer Levantine Waters (LW) entering from the southern region constitute the complex structure of the Aegean Sea waters. This work describes the sea surface circulation and distribution of physical parameters in the Aegean Sea for the period between 1986-1994 by using in-situ measurements including Conductivity, Temperature, Depth (CTD) data. Analysis of surface data showed that the high salinity and density values first occurred in the North Aegean Sea since the beginning of 1987.

Keywords:

water flow, Turkey, hydrological factors, oceanography, Aegean Sea, water temperature, salinity, runoff,

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Cordero, S. G. 1999. The use of thermal satellite data in dense water formation studies in the Mediterranean. Journal of Marine Systems, 20, 175-186.

Klein, B., W. Roether, B.B. Manca, D. Bregant, V. Beitzel, V. Kovacevic, A. Luchetta. 1999. The large deep water transient in the Eastern Mediterranean. Deep-Sea Research 46,371-414.

Lascaratos, A., W. Roether, K. Nittis, B. Klein. 1999. Recent changes in deep water formation and spreading in the eastern Mediterranean Sea: a review. Progress in Oceanography, 44,5-36.

Malanotte-Rizzoli P., B. B. Manca, M. R. d'Alcala, A. Theocharis, S. Brenner, G. Budillon, E. Özsoy. 1999. The Eastern Mediterranean in the 80s and in the 90s: the big transition in the intermediate and deep circulations. Dynamics of Atmospheres and Oceans, 29,365-395.

Marullo, S., R. Santoleri, P. Malonotte-Rizzoli, A. Bergamoasco. 1999. The sea surface temperature field in the Eastern Mediterranean from advanced very high resolution radiometer (AVHRR) DATA. Part I. Seasonal variability. Journal of Marine Systems, 20,63-81.

MEDATLAS group. 1997. Mediterranean Hydrological Atlas. IFREMER (Editor), 3 CDROM.

Özsoy, E., M. A. Latif. 1996. Climate variability in the Eastern Mediterranean and great Aegean outflow anomaly. Proceedings of International POEM- BC/MTP Symposium, 69-86.

Poulos, S. E, P. G. Drakopoulos, M. B. Collins. 1997. Seasonal variability in sea surface oceanographic conditions in the Aegean Sea (Eastern Mediterranean): an overview. Journal of Marine Systems, 13,225-244.

Roether, W., B. B. Manca, B. Klein, D. Bregant, D. Georgopoulos, V. Beitzel, V. Kovacevic, A. Luchetta. 1996. Recent changes in Eastern Mediterranean deep waters. Science, 271,333-335.

Sea-Bird Electronics Inc. 1994. CTD Data Acquisition Software, Seasoft. Washington, USA.

Theocharis, A., D. Georgopoulos, P. Karagevrekis, A. lona, L. Perivoliotis, N. Charalambidis. 1992. Aegean influence in the deep layers of the eastern Ionian Sea (October 1991). Rapp. Com. Int. Mer. Mediterr. 33,235.

Theocharis, A., K. Nittis, H. Kontayiannis, E. Papageorgiou, E. Balopoulos. 1999. Climatic changes in the Aegean Sea influence the Eastern Mediterranean thermohaline circulation (1986-1997). Geophysical Research Letters, 26,11,1617-1620.

Yüce, H. 1991. Seasonal Distributional Patterns of The Northern Aegean Surface Waters. Doğa-Tr. J. of Engineering and Environmental Sciences, 15,376-399.

Uckac, S. 2004. Determination of Physical Processes in the Aegean Sea. D.E.U, Institute of Marine Sciences and Technology, PhD Thesis.

Zervakis, V., D.Georgopoulos. 2000. The role of the North Aegean in triggering the recent Eastern Mediterranean climatic changes. Journal of Geophysical Research. 105. C11.26103-26116.

Zodiatis, G., E. Balopoulos. 1993. Structure and characteristics of fronts in the North Aegean Sea. Bulletin Di Oceanologia Teorica Ed Applicata, 11,2, 113-124.

Zodiatis, G. (1994). Advactionof the Black Sea water in the North Aegean Sea. The Global Atmosphere and Ocean System, 2,41-60.

Zodiatis, G., S. Alexandri, P. Pavlakis, L. Jonsson, G. Kallos, A. Demotropoulos, G. Georgiou, A. Theodorou, E. Balopoulos. 1996. Tentative study of flow patterns in the North Aegean Sea using NOAA- AVHRR images and 2D model simulation. Annales Geophysicae, 14, 1221-1231.