Global Positioning System Constraints on the Plate Kinematics and Dynamics in Turkish RegionEntry ID: GEO_CORNELL_GPS
Abstract: We present and interpret Global Positioning System (GPS) measurements of
crustal motions for the period 1988-1997 at 189 sites extending east-west from
the Caucasus mountains to the Adriatic Sea and north-south from the southern
edge of the Eurasian plate to the northern edge of the African plate. Sites on
the northern Arabian platform move 18+- 2 mm/yr at N25 +- 5 W ... relative to
Eurasia, less than the NUVEL -1A circut closure rate ( 25+- 1 mm/yr at N21 +-
7W). Preliminary motion estimates (1994 -1997) for stations located in Egypt on
the northeastern part of Africa show northward motion at 5 -6 +- 2 mm/yr, also
slower than NUVEL-1A estimates ( 10 +- mm/yr at N2 +- 4E). Eastern Turkey is
characterized by distributed deformation, while central Turkey is characterized
by coherent plate motion (internal deformation of < 2 mm/yr) involving westward
displacement and counterclockwise rotation of the Anatolian plate. The
Anatolian plate is de-coupled from Eurasia along the right-lateral,
strike-slip North Anatolia fault (NAF). We derive a best fitting Euler vector
for Anatolia-Eurasia motion of 30.7 +- .8N, 32.6 +- 1.2E, 1.2+- .1/Myr. The
Euler vector gives an upper bound for NAF slip rate of 24 +- 1 mm/yr. We
determine a preliminary GPS Arabia-Anatolia Euler vector of 32.9 +- 1.2N, 40.3
+- 1.1E, .8 +- .2 /Myr and an upper bound on left-lateral slip on the East
Anatolian fault (EAF) of 9 +- 1 mm/yr. The central and southern Aegean is
characterized by coherent motion (internal deformation of <2 mm/yr) toward the
SW at 30 +- 1 mm/yr relative to Eurasia. Stations in the SE Aegean deviate
significantly from the overall motion of the southern Aegean, showing
increasing velocities toward the trench and reaching 10 +- 1 mm/yr relative to
the southern Aegean as a whole.
Data Set Citation
Dataset Originator/Creator: S.C. McClusky, S. Balassanian, A. Barka, C. Demir, S. Ergintav, et al.
Dataset Title: Global Positioning System Constraints on the Plate Kinematics and Dynamics in Turkish Region
Dataset Series Name: J. of Geophys. Rsch
Dataset Release Date: 2000
Dataset Publisher: American Geophysical Union
Issue Identification: v.105
Other Citation Details: pp. 5695 - 5791Online Resource: http://atlas.geo.cornell.edu
Start Date: 1988-01-01Stop Date: 1997-12-31
ISO Topic Category
Data Set Progress
Distribution Media: Online
Distribution Format: Arc/Info
Role: TECHNICAL CONTACT
Email: barazangi at geology.cornell.edu
Cornell University Snee Hall Department of Geological Sciences
Province or State: NY
Postal Code: 14853
Cornell University GIS group, 2000, Turkish GPS vectors (= this ArcInfo
coverage), Ithaca, New York: Cornell University GIS group.
McClusky, S., S. Balassaanian, A. Barka, C. Demir, S. Ergintav, I. Georgiev, O.
Gurkan, M. Hamburger, K. Hurst, H. Kahale, K. kastens, G. Kekelidze, R. King,
V. Kotzev, O. Lenk, S. Mahmoud, A. mishin, M. Nadariya, A. Ouzounis, D.
Paradissis, Y. Peter, M. Prilepin, R. Reilinger, I. Sanli, H. Seeger, A.
Tealeb, M.N. Toksoz, and G. Veis, 2000, " Global Positioning System constraints
on plate kinematics and dynamics in the eastern Mediterranean and Caucusus",
Journal of Geophysical Research 105: 5695-5719.
Creation and Review Dates
DIF Creation Date: 2006-08-28
Last DIF Revision Date: 2009-03-26