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Aegean Circulation Based on the 2002 Pilot Drifter Array A collaboration between the University of Miami, the Greek National Center of Marine Research and the University of Athens.

Aegean Circulation Based on the 2002 Pilot Drifter Array A collaboration between the University of Miami, the Greek National Center of Marine Research

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Page 1: Aegean Circulation Based on the 2002 Pilot Drifter Array A collaboration between the University of Miami, the Greek National Center of Marine Research

Aegean Circulation Based on the 2002 Pilot Drifter Array

A collaboration between the University of Miami, the Greek National Center of Marine Research and the University of

Athens.

Page 2: Aegean Circulation Based on the 2002 Pilot Drifter Array A collaboration between the University of Miami, the Greek National Center of Marine Research

GPS Units

• Holey sock drogue at 10 m mid-depth.

• GPS navigation and one hour reporting.

• Uplink through ARGOS.

• Data on GTS and website link.

• Hull Sea Surface Temperature

• Stranding recovery by NCMR and U. Athens.

Page 3: Aegean Circulation Based on the 2002 Pilot Drifter Array A collaboration between the University of Miami, the Greek National Center of Marine Research

Program involved deployment of 30 Global Positioning System/ARGOS drifters.

Drogues are WOCE standard by at a 10m mid-depth rather than the 15 m. This is to allow shallow water capability.

Launches were done from IMS cruises.

Page 4: Aegean Circulation Based on the 2002 Pilot Drifter Array A collaboration between the University of Miami, the Greek National Center of Marine Research

Mean flows by 2X2 degree boxes.

Red > 10 units

Black < 10 units

Calculations by C. Veneziani

Page 5: Aegean Circulation Based on the 2002 Pilot Drifter Array A collaboration between the University of Miami, the Greek National Center of Marine Research

Mean velocities with variance ellipses

C. Veneziani

Page 6: Aegean Circulation Based on the 2002 Pilot Drifter Array A collaboration between the University of Miami, the Greek National Center of Marine Research

Eddy Kinetic Energy from Drifter Array as of 9/27/02

C. Veneziani

Page 7: Aegean Circulation Based on the 2002 Pilot Drifter Array A collaboration between the University of Miami, the Greek National Center of Marine Research

Northern Aegean

Black Sea outflow: Low S

Page 8: Aegean Circulation Based on the 2002 Pilot Drifter Array A collaboration between the University of Miami, the Greek National Center of Marine Research

Drifter trajectories over bottom topography

Page 9: Aegean Circulation Based on the 2002 Pilot Drifter Array A collaboration between the University of Miami, the Greek National Center of Marine Research

Flows in the general outfall plume into bays.

Strong control by the bay mouth mesoscale field.

Page 10: Aegean Circulation Based on the 2002 Pilot Drifter Array A collaboration between the University of Miami, the Greek National Center of Marine Research
Page 11: Aegean Circulation Based on the 2002 Pilot Drifter Array A collaboration between the University of Miami, the Greek National Center of Marine Research

Flow into the western side of the northern Aegean Sea

Bifurcation of flow and cross shelf exchange mediated by the mesoscale.

Flow to the south in a coherent coastal jet.

Page 12: Aegean Circulation Based on the 2002 Pilot Drifter Array A collaboration between the University of Miami, the Greek National Center of Marine Research
Page 13: Aegean Circulation Based on the 2002 Pilot Drifter Array A collaboration between the University of Miami, the Greek National Center of Marine Research

Flow through Sporades Straits

Modulation of flow with respect to capes and bays off Evvoia

Page 14: Aegean Circulation Based on the 2002 Pilot Drifter Array A collaboration between the University of Miami, the Greek National Center of Marine Research

Chios Basin Gyre

Page 15: Aegean Circulation Based on the 2002 Pilot Drifter Array A collaboration between the University of Miami, the Greek National Center of Marine Research
Page 16: Aegean Circulation Based on the 2002 Pilot Drifter Array A collaboration between the University of Miami, the Greek National Center of Marine Research
Page 17: Aegean Circulation Based on the 2002 Pilot Drifter Array A collaboration between the University of Miami, the Greek National Center of Marine Research
Page 18: Aegean Circulation Based on the 2002 Pilot Drifter Array A collaboration between the University of Miami, the Greek National Center of Marine Research
Page 19: Aegean Circulation Based on the 2002 Pilot Drifter Array A collaboration between the University of Miami, the Greek National Center of Marine Research

Analysis of the along shore currents. Coordinate system.

Page 20: Aegean Circulation Based on the 2002 Pilot Drifter Array A collaboration between the University of Miami, the Greek National Center of Marine Research

Drifter tracks relative to the line.

Page 21: Aegean Circulation Based on the 2002 Pilot Drifter Array A collaboration between the University of Miami, the Greek National Center of Marine Research

Coastal Jet

Sporades

Page 22: Aegean Circulation Based on the 2002 Pilot Drifter Array A collaboration between the University of Miami, the Greek National Center of Marine Research

The Chios Basin Gyre.

Lifting of jet off coast.

Gyre over intermediate topography

Page 23: Aegean Circulation Based on the 2002 Pilot Drifter Array A collaboration between the University of Miami, the Greek National Center of Marine Research

Outflow to the west.

Inflow in east

Page 24: Aegean Circulation Based on the 2002 Pilot Drifter Array A collaboration between the University of Miami, the Greek National Center of Marine Research

Some M2 tide

Tradition is that this component is weak: Island scattering on coast?

Page 25: Aegean Circulation Based on the 2002 Pilot Drifter Array A collaboration between the University of Miami, the Greek National Center of Marine Research

QUICKSAT: Scatterometer winds: Synoptic forcing?

Page 26: Aegean Circulation Based on the 2002 Pilot Drifter Array A collaboration between the University of Miami, the Greek National Center of Marine Research

Conclusions

• A thirty drifter array in 2002 provides a rich starting point to begin a new assessment of not only the Aegean, but marginal seas with complicated topographies in general.

• The data is still being collected; but the results to date suggest a very rich set of results.