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Slide1: 

Yalkin CAGLAR yalkin.caglar@hgk.mil.tr Geodesy Department General Command of Mapping www.hgk.mil.tr NATIONAL REPORT TURKEY 2005

Slide2: 

Turkish National Fundamental GPS Network Turkish Permanent GPS Network Episodic GPS Observations for Geodynamics Studies Turkish Geoid – 2003 Turkish Sea Level Monitoring System Geodetic Database OUTLINE

Slide3: 

Resurveyed due to earthquakes Turkish National Fundamental GPS Network Established in 2001 Total 600 Stations Coordinates/velocities in ITRF2000 Connected to control Networks ED-50  WGS84 transformation Analysis for ITRF2000 with new data

Slide4: 

Time series analyzed on monthly basis Turkish Permanent GPS Network 19 station as of May 2005 Initiated in 1999

Slide5: 

Turkish Permanent GPS Network 16 stations planned at the beginning Increase number of sites up to 80 stations

Slide6: 

Horizontal velocity field of Turkey and surrounding regions in a Eurasia – fixed frame Tectonically active area Bounded by Africa and Arab plates (south) Eurasia global plate (north) Anatolia moving ccw ~2.5 cm/yr (horizontal) Qualified by GPS observations since 2002

Slide7: 

Episodic GPS Observations for Geodynamics Studies Shear strain rates across Turkey calculated (in rad/yr) Earthquake prone areas are quite evident

Slide8: 

Turkish Geoid 2003

Slide9: 

Turkish Geoid 2003 The gravity data used in TG03 geoid determination

Slide10: 

Turkish Geoid 2003 The topography used in TG03 geoid determination

Slide11: 

Turkish Geoid 2003 197 GPS / leveling stations

Slide12: 

Turkish Sea Level Monitoring System Existing 10 stations Sea level variations and meteorological parameters Planned 3 stations

Slide13: 

Turkish Sea Level Monitoring System Trabzon-II digital and automatic tide gauge

Slide14: 

Turkish Sea Level Monitoring System CGPS CGPS CGPS CGPS CGPS Geodetic measurements (EGPS, CGPS, leveling) are made peroidically

Slide15: 

Turkish Sea Level Monitoring System GCM participated in ESEAS with Antalya tide gauge established a CGPS site at this TG acts as one of the analysis centers processes ESEAS CGPS data with GAMIT/GLOBK also acts as sea level analysis center responsibile for determination of interannual to interdecadal and long term sea level variations in Eastern Mediterranean Sea and Black Sea

Slide16: 

Geodetic Database (GDB) Typical screenshots

Slide17: 

Yalkin CAGLAR yalkin.caglar@hgk.mil.tr Geodesy Department General Command of Mapping www.hgk.mil.tr NATIONAL REPORT TURKEY 2005