TELEMAC MODELINGTELEMAC MODELINGin the IZMIR BAYin the IZMIR BAY

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DEU-SUMER DEU-SUMER Water Resources Management Research and Water Resources Management Research and

Application CenterApplication CenterIzmir, TurkeyIzmir, Turkey

TRANSFER OF GEOSPATIAL DATATRANSFER OF GEOSPATIAL DATA

Geospatial Base Data

- Water Depths

- Isolines

- Sea-Land Border

- Derived DEM Geospatial Data transferred into SX file format

GENERATION OF ELEVATION MODEL (MESH)GENERATION OF ELEVATION MODEL (MESH)

DEM

Mesh

Mesh with boundaries

REGENERATING THE MESH FOR EASY REGENERATING THE MESH FOR EASY COMPUTINGCOMPUTING

Number of Nodes

25,292 nodes 4701 nodes

Based on bathimetry Considering a derived criterion

BOUNDARIES OF THE CONTROL VOLUME/AREABOUNDARIES OF THE CONTROL VOLUME/AREA

Gediz River Outlet

Deep Sea (Aegean Sea)

Boundaries: Deep Sea (liquid boundary) River Outlet (liquid boundary) Coastline & islands (solid boundaries)

CALIBRATION DATA SET (EXAMPLES)CALIBRATION DATA SET (EXAMPLES)Control Point 1:

Long: 26.78 Lat: 38.57

X: 480835 Y: 4269080 (UTM-35)

For the period of 23-30.09.1994

At 10m. depth

Max. Velocity : 10.50 cm/sec

Avg. Velocity : 3.93 cm/sec (0.0393m/sec)

At 25m. Depth

Max. Velocity : 9.60 cm/sec

Avg. Velocity : 3.55 cm/sec (0.0355m/sec)

0

0,5

1

1,5

2

2,5

0 20000 40000 60000 80000 100000

Seri 1

Output to Excel in .num format

Average~0.2m/sec

CALIBRATION DATA SET (EXAMPLES)CALIBRATION DATA SET (EXAMPLES)

Control Point 2:

Long: 26.68 Lat: 38.52

X: 472104 Y: 4263560 (UTM-35)

For the period of 23-30.09.1994

At 10m. depth

Max. Velocity : 11.40 cm/sec

Avg. Velocity : 6.30 cm/sec (0.060m/sec)

At 25m. Depth

Max. Velocity : 12.20 cm/sec

Avg. Velocity : 4.86 cm/sec (0.0486m/sec)

0

0,2

0,4

0,6

0,8

1

1,2

1,4

1,6

1,8

2

0 20000 40000 60000 80000 100000

Seri 1

Output to Excel in .num format

Average~0.09m/sec

CALIBRATION DATA SETCALIBRATION DATA SET

Control Points (More):

Long: 26.8490 Lat: 38.3980 For the period of 12.08.1997-23.09.1997

Long: 26.9235 Lat: 38.3952 For the period of 12.08.1997-23.09.1997

Long: 26.8467 Lat: 38.3983 For the period of 06.11.1997-20.01.1998

…

Varying positions

Varying times

Calibration is still in progress due to:

Model simulation time step is 2 secs. BUT the calibration data is composed of averages from A NUMBER OF days.

In such a case, total simulation time for a single trial becomes more than 5 hours and makes the calibration process slower!!!

WHAT IS NEXT?WHAT IS NEXT?

Calibration of the TELEMAC model is going to be completed soon so that the model becomes representative for the water motion within the bay.

Following the completion of the TELEMAC modeling, Water Quality Modeling is going to be performed on SUBIEF.

In SUBIEF, there will be a number of scenario tests by changing the dominant wind direction and the average pollutant loads coming both from the Gediz and other point sources in the inner bay.

The results will be evaluated by using the computer program developed by Yvon in order to determine the critical areas in the bay considering the pollution transport.

As the time is limited for the rest of the work, all efforts will be in a continuous contact with SOGREAH

Report Writing…to be completed partly after Telemac2d modeling.