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Thermohaline Circulation and Dynamic Structure of the North Aegean Sea

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konane
21 diapositives · 365 Views · Sep 15, 2014

This study, presented by Dimitris Georgopoulos at the National Centre for Marine Research, examines the thermohaline circulation and dynamic features of the North Aegean Sea. Utilizing data from various meteorological conditions and water masses, including Black Sea Water (BSW) and Levantine Surface Water (LSW), the research highlights the seasonal variability and distribution of these water masses, along with current patterns and dynamic structures such as cyclones and anticyclones in the region. Key findings on water exchange rates and the evolving dynamics within the Aegean Sea are also discussed.

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  1. THERMOHALINE CIRCULATION AND DYNAMIC STRUCTURE OF THE NORTH AEGEAN Dimitris GEORGOPOULOS National Centre for Marine Research Rhodes - 8 to 11 October 2002

  2. EXISTING DATA GEOMORFOLOGY 1908-1984 1985-1999

  3. METEOROLOGICAL CONDITIONS • The prevailing winds are northerlies • The secondary peak in frequency are Southerlies

  4. ETESIAN WINDS NOAA-AVHRR 31-8-87 Visible

  5. UPEWLLINGS NOAA-AVHRR HRPT of 4-9-1987 Summer wind stress distribution in the Mediterrenean

  6. WATER MASSES • Black Sea Water (BSW) • Old BSW • Levantine Surface Water (LSW) • Levantine Intermediate Water (LIW) • Deep and Bottom Water (DW) * *

  7. The distribution of BSW and LSW • BSW occupies the northern and western parts of the N. Aegean • The LSW occupies the eastern part of the Aegean up to the Limnos Plateau BSW BSW LSW

  8. SEASONAL EVOLUTION OF BSW * *

  9. BSW Seasonal varibility of the BSW at station in the Limnos basin. The net exchange through Dardanelles fluctuates from 200km3/yr to 1000km3/yr. The mean inflow in the AEGEAN is 1257km3/yr and outflow from the AEGEAN is 957km3/yr *

  10. LIA-4 Nov.-86 LIA-5 Mar.-87 LSW LIA-6 Aug.-87 LIA-3 Sept.-86

  11. SEASONAL CHANGES OF THE WATER COLUMN *

  12. DISTRIBUTION OF LIW AUGUST-SEPTEMBER 1986

  13. DISTRIBUTION OF LIW AUGUST-SEPTEMBER 1987

  14. DEEP AND BOTTOM WATEROF THE N. AEGEAN * Mean minimum temperature during the last 48 years in Alexandroupolis meteo station -0.1 1987

  15. DEEP AND BOTTOM WATER IN DIFFERENT BASINS * *

  16. 10 year changes in the N. Aegean The recent history of the Limnos Basin 1986 1987 - 1988 1993 1997

  17. 10 year changes in the N. Aegean The recent history of the North Skyros Basin 1986 1987 1988 1997

  18. DEEP AND BOTTOM WATER IN DIFFERENT BASINS

  19. SOURCES OF DEEP WATER IN THE N. AEGEAN BSW ? NAeW ? ? ? NAeW ? LIW ? LSW NAeW

  20. CONVEYOR BELT CONNECTING THE NORTH AND SOUTH AEGEAN και plateau Θερμαϊκού

  21. LIA-5 March 87 THE DYNAMIC STRUCTURE LIA-3 August 86 • MAIN DYNAMIC FEATURES • Cyclone of Chios basin • Anticyclones along the periphery of the Chios Cyclone • North Sporades Cyclone • Samothraki Anticyclone • Athos anticyclone • Current of the Eastern Aegean • Thermohaline front of Limnos • Thermohaline fronts where BSW meetLSW/LIW • Upwellings LIA-4 November 86 LIA-6 August 87