Strain rates in Greece using GPS measurements from 1994-2000

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Publiée : Jan 1, 2007
DOI : https://doi.org/10.12681/bgsg.17296
S. Rontogianni
University of Newcastle, School of Civil Engineering and Geosciences
P. Clarke
University of Newcastle, School of Civil Engineering and Geosciences
M. King
University of Newcastle, School of Civil Engineering and Geosciences
D. Lavallée
University of Newcastle, School of Civil Engineering and Geosciences
P. England
University of Oxford, Department of Earth Sciences
B. Parsons
University of Oxford, Department of Earth Sciences
M. Floyd
University of Oxford, Department of Earth Sciences
Résumé

Fifteen Greek GPS campaigns from 1994-2001 are reprocessed in ITRF2000 using Bernese v4.2 software. The reference frame is navigated by 43 global, long running IGS sites, which are included in the coordinate final solution together with ~280 local sites. A loosely constrained solution is derived. We combine the 221 daily SINEX files in a least squares approach with the TANYA software, producing the coordinate time series and the velocity field in a European Fixed reference frame. Sites around Chalkidiki and Grevena show a residual motion -10 mm/yr. Sites around Attica, Evvia, SE Peloponnisos, Aegean Islands have a SW residual motion reaching -40 mm/yr in South Peloponnisos. The Patras area shows a more southwesterly motion with respect to the rest of the sites, moving -30-35 mm/yr. Geodetic strain is derived by two methods: by discrete estimation within contiguous polygons, and by fitting a continuous minimum curvature surface to the velocity field.

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  • New Technologies in Geophysical and Geological Research
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Références
Altamimi, Z., Sillard, P., and Boucher, C, 2002. ITRF2000: A new release of the International Terrestrial Reference Frame for earth science applications, J.Geophys.Res, 107(B10), 2214. doi: 10.1029/2001JB000561
Ambraseys, N., 2001. Reassessment of earthquakes, 1900-1999, in the Eastern Mediterranean and the Middle East, Geophys.J.Int, 145,471-485.
Ambraseys, N., and Jackon, J., 1997. Seismicity and strain in the Gulf of Corinth (Greece) since 1694, J.Earthq. Eng, 1(3), 433-474.
Ambraseys, N., and Jackson, J., 1990. Seismicity and associated strain of central Greece between 1890 and 1988, Geophys.J.Int, 101, 663-708.
Armijo, R., Meyer, B., King, G.C.P., Rigo, Α., and Papanastasiou, D., 1996. Quaternary evolution of the Corinth Rift and its implications for the Late Cenozoic evolution of the Aegean, Geophys.J.Int, 126, 11-53.
Beutler, G., et al., 2001. Bernese GPS software Version 4.2, Astronomical Institute, University of Berne 2001.
Briole, P., et al., 2000. Active deformation of the Corinth rift, Greece: Results from repeated Global Positioning System surveys between 1990 and 1995, J.Geophys.Res, 105(B11), 25.605-25.625.
Clarke, P.J., 1996. Tectonic motion and tectonic deformation in Greece from GPS measurements, University of Oxford, Exeter College, Oxford.
Cocard, M, et al., 1999. New constraints on the rapid crustal motion of the Aegean region: recent results inferred from GPS measurements (1993-1998) across the West Hellenic Arc, Greece, Earth Planet.Sci.Lett, ill, 39-47.
Cruddace, P.R., et al., 1999. An interdisciplinary approach to studying seismic hazard throughout Greece. In Geodesy beyond 2000: the challenges of the first decate, International Association of Geodesy Symposia, 121, 279-284.
Davies, P., 1997. Assembling the IGS polyhedron, a densinfied weekly GPS terrestrial reference frame, University of newcastle Upon Tyne, Newcastle Upon Tyne.
Davies, R.R., and Blewitt, G., 2000. Methodology for global geodetic time series estimation: A new tool for geodynamics, J. Geophys.Res, 105(B5), 11.083-11.100.
Estay, L., and Meertens, C, 1999. TEQC: The Multi-Purpose Toolkit for GPS/GLONASS data, GPS solutions, 3(1): 42-42.
Frank, F.C., 1966. Deduction of earth strains from survey data, Bull.Seismol.Soc.Am, 56(1), 32-42.
Goldsworthy, M., Jackson, J., and Hains, A.J., 2002. The continuity of the active fault systems in Greece, Geophys.J.Int, 148, 596-618.
Gurtner, W., 1994. RINEX: The Receiver Independent Exchange Format, GPS WORLD, 5(7): 48-52.
Hatzfeld, D., Martinod, J., Bastet, G., and Gautier, P., 1997. An analogue experiment for the Aegean to describe the contribution of gravitational potential energy, J. Geophys.Res, 102, 649-659.
Hollenstein, C, Geiger, Α., Kahle, H.-G., and Veis, G., 2005. CGPS time-series and trajectories of crustal motion along the West Hellenic Arc, Geophys.J.Int, 164, 182-191. doi.T0.1111/j.l365-246X.2005.02804.x
Kahle, H.-G., et al., 2000. GPS-derived strain rate field within the boundary zones of the Eurasian, African, and Arabian Plates, J.Geophys.Res, 105(B10), 23.353-23.370.
Kahle, H.-G., et al., 1999. The GPS strain rate field in the Aegean Sea and western Anatolia, Geophys.Res.Lett, 26(16), 2513-2516.
Kahle, H.-G., et al., 1998. The strain rate field in the eastern Mediterranean region estimated by repeated GPS measurements, Tectonophysics, 294, 237-252.
Kreemer, C, Holt, W.E., and Hains, A.J., 2003. An integrated global model of present-day plate motions and plate boundary deformation, Geophys.J.Int, 154, 8-34.
Lavallée, DA., 2000. Tectonic plate motions from global GPS measurements, University of Newcastle Upon Tyne, Newcastle Upon Tyne.
Le Pichon, X., and Angelier, J., 1979. The Hellenic arc and trench system: a key to the evolution of eastren Medoterranean, Tectonophysics, 60, 1-42.
Le Pichon, X., Chamot-Rooke, N., and Lallemant, S., 1995. Geodetic determination of the kinematics of central Greece with respect to Europe: Implications for eastern Mediterranean tectonics, J.Geophys.Res, 100(B7), 12.675-12.690.
Mantovani, E., et al., 2000. Role of kinematically induced horizontal forces in Mediterranean tectonics: insight from numerical modelling, J.Geodyn, 30, 287-320.
McClusky, S., et al., 2000. Global Positioning System Constraints on plate kinematics and dynamics in the eastren Mediterranean and Caucasus, J.Geophys.Res, 105(B3), 5695-5719.
McKenzie, D.P., 1970. Plate Tectonics of the Mediterranean Region, Nature, 226, 239-243.
McKenzie, D.P., 1972. Active tectonics of the Mediterranean Region, Geophys.J.R.astr.Soc, 30, 109-185.
McKenzie, D.P., 1978. Active tectonics of the Alpine-Himalayan Belt: the Aegean Sea and surrounding regions, Geophys.J.R.astr.Soc, 55,: 217-254.
McKenzie, D.P., and Jackson, J., 1983. The relationship between strain rates, crustal thickening, paleomagnetism, finite strain and fault movements within a deforming zone, Earth Planet.Sci.Lett, 65, 182-202.
McKenzie, D.P., and Jackson, J., 1986. A block model of distributed deformation by faulting, J.Geol.Soc.London, 143, 349-353.
Meijer , P.T., and Wortel, M.J.R., 1997. Present-day dynamics of the Aegean region: a model analysis of the horizontal pattern of stress and deformation, Tectonics, 16, 879-895.
Niell, A.E., 1996. Global mapping functions or the atmosphere delay at radio wavelengths, J.Geophys.Res, 101(B2), 3227-3246.
Nyst, M.C.J., and Thatcher, W., 2004. New constraints on the active tectonic deformation of the Aegean, J.Geophys.Res, 109, Bl 1406. doi: 10.1029/2003JB002830
Papazachos, B.C., 1990. Seismicity of the Aegean and the surrounding area, Tectonophysics, 178, 287-308
Papazachos, B.C., Papaioannou, C, Papazachos, C.B., and A.S, S., 1999. Rupture zones in the Aegean region, Tectonophysics, 308,205-221.
Papazachos, C.B., and Kiratzi, Α., 1996. A detailed study of the active crustal deformation in the Aegean and surrounding area, Tectonophysics, 253, 129-153.
Peter, J.D., et al., 1998. Establishment of continuous GPS network across Kephalonia Fault Zone, Ionian islands, Greece, Tectonophysics, 294, 253-260.
Plag, H.-P., et al., 1998. Scientific objectives of current and future WEGENER activities, Tectonophysics, 294, 177-223.
Reilinger, R., et al., 1997. Global Positioning System measurements of present-day crustal mmovements in the Arabia-Africa-Eurasia plate collision zone, J.Geophys.Res, 102(B5), 9983-9999.
SOPAC, Scripps Orbit and Permanent Array Center http://sopac.ucsd.edu/dataArchive/: (downloaded, May 2006)
Taymaz, T., Jackson, J., and McKenzie, D.P., 1991. Active tctonics of the north and central Aegean Sea, Geophys.J.Int, 106,433-490.
Thatcher, W., 2003. GPS Constraints on the Kinematics of Continental Deformation, Internat. Geology Review, 45, 191-212.
UNAVCO, TEQC-tutorial, http://facility.unavco.org/software/teqc/teqc.html: (downloaded, May 2006)
Welsch, W.M., 1983. Finite element analysis of strain patterns from geodetic observations across a plate margin, Tectonophysics, 97, 57-71.