Tomographic imaging of the Andravida blind strike-slip fault (Western Greece)
Article Sidebar
Main Article Content
Abstract
On 8 June 2008 at 12:25 GMT, a large (Mw6.4) earthquake occurred NE of the town of Andravida in Western Peloponnese, Greece – an area characterized by high seismicity during the last decade. In this study, the local velocity structure of the Andravida Fault Zone (AFZ) is investigated primarily using data recorded during the period 2012-2017 by the Hellenic Unified Seismological Network (HUSN). We selected about 1,500 seismic events recorded by the local HUSN stations as well as the Hellenic Strong-Motion Network (HSMN). By applying tomographic inversion, we produced and interpreted 3D models of VP, VS, and VP/VS ratio in the study area. The spatial distribution of the aftershocks, as well as the 3D model derived by Local Earthquake Tomography (LET), provided evidence for the rupture plane. Surface breaks and minor faults are found to be oblique to the main direction of the AFZ, as a result of a restraining bend in Mtn. Movri and the formation of a positive flower-structure in the shallow layers of the upper crust.
ARK: https://n2t.net/ark:/88439/x014750
Permalink: https://geophysicsjournal.com/article/29
Article Details
Authors who publish with this journal as of Vol. 63 agree to the following terms:
a. Authors share the copyright with this journal in equal parts (50% to the journal, 50% to the lead author), and grant the journal right of first publication, with the work after publication simultaneously licensed under Creative Commons Attribution License CC BY-NC-ND 4.0 that allows others to share the work with an acknowledgment of the work's authorship and initial publication in this journal.
b. Authors may enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgment of its initial publication in this journal, and a reference to this copyright notice.
c. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) during the submission process, as this can lead to productive exchanges and earlier and greater citation of published work and better sales of the copyright.
Author Self-archiving
Authors retain copyright and grant the Journal of Geophysics right of first publication, with the work three years after publication simultaneously licensed under the Creative Commons BY-NC-ND 4.0 License that allows others to share the work (with an acknowledgment of the work's authorship and initial publication in this journal), except for commercial purposes and for creating derivatives.
Authors can enter into separate, additional, but non-commercial contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository, but not publish it in a book), with an acknowledgment of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) before and during the submission process, as that can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
Additional Notes
This journal is one of a handful of scholarly journals that publish original scientific works under CC BY-NC-ND 4.0 - the only Creative Commons license affording the authors' intellectual property absolute worldwide protection.
Journal of Geophysics is published under the scholar-publishers model, meaning authors do not surrender their copyright to us. Instead, and unlike corporate publishers like Elsevier or Springer Nature that resell copyright to third-parties for up to $80,000 (per paper, per transaction!), the Journal of Geophysics authors share copyright equally with this journal.
Therefore, all the proceeds from reselling copyright to third parties get shared to equal parts (50% to the journal, 50% to the lead author). Under the Berne Convention, this protection is an inheritable right that lasts for as long as the rightsholder lives + 50 years.
By submitting to this journal, the lead author, on behalf of all co-authors, grants permission to this journal to represent all co-authors in negotiating copyright sales and collecting proceeds. The lead author should negotiate with his/her co-authors the modalities of distributing the lead author's portion of the proceeds. Usually, this is per pre-agreed percentage of each co-author's contribution to creating the copyrighted work. (more...)
References
Armijo, R., Lyon-Caen, H., Papanastassiou, D. (1992) East-west extension and Holocene normal fault scarps in the Hellenic arc. Geology 20:491–494
Armijo, R., Meyer, B., King, G.C.P., Rigo, A., Papanastassiou, D. (1996) Quaternary evolution of the Corinth Rift and its implications for the late Cenozoic evolution of the Aegean. Geo Hys. J. Int. 126:11-53
Chamot-Rooke, N., Rabaute, A., Kreemer, C. (2005) Western Mediterranean Ridge mud belt correlates with active shear strain at the prism-backstop geological contact. Geology 33(11):861–864
Chousianitis, K., Agalos, A., Papadimitriou, P., Lagios E., Makropoulos, K. (2010) Source parameters of moderate and strong earthquakes in the broader area of Zakynthos Island (W. Greece) from regional and teleseismic digital recordings. Bull. Geol. Soc. Greece, Proc. 12th Intl. Cong. Patras, May 2010, XLIII(4):2005-2014
Drakatos, G., Melis, N., Papanastassiou, D., Karastathis, V., Papadopoulos, G., Stavrakakis, G. (2002) 3D Crustal Velocity Structure from Inversion of Local Earthquake Data in Attiki (Central Greece) Region. Natural Hazards 27(N1-2):1-14
Evans, J.P., Chester, F.M. (1995) Fluid–rock interaction in faults of the San-Andreas system — inferences from San-Gabriel fault rock geochemistry and microstructures. J. Geophys. Res. Solid Earth 100:13007-13020
Faulkner, D.R., Lewis, A.C., Rutter, E.H. (2003) On the internal structure and mechanics of large strike-slip fault zones: field observations of the Carboneras Fault in southeastern Spain. Tectonophysics 367(3–4):235-251
Feredinos, G., Brooks, M., Doutsos, T. (1985) Quaternary tectonics in the Gulf of Patras, western Greece. J. Struct. Geol. 7(6):713–717
Gallais, F., Gutscher, M. A., Graindorge, D., Chamot-Rooke, N., Klaeschen, A.D. (2011) Miocene tectonic inversion in the Ionian Sea (central Mediterranean): Evidence from multichannel seismic data. J. Geophys. Res. 116:B12108
Ganas, A., Serpelloni, E., Drakatos, G., Kolligri, M., Adamis, I., Tsimi, C., Batsi, E. (2009) The Mw6.4 SW-Achaia (Western Greece) Earthquake of 8 June 2008: Seismological, field, GPS observations, and stress modeling. J. Earthq. Eng. 13:1101–1124
Ganas, A., Oikonomou, A.I., Tsimi, Ch. (2013) NOAFAULTS: a digital database for active faults in Greece. Bull. Geol. Soc. Greece XLVI
Halpaap, F., Rondenay, S., Ottemöller, L. (2018) Seismicity, Deformation and Metamorphism in the Western Hellenic Subduction Zone – New Constraints from Tomography. J. Geophys. Res. 123:3000–3026
Hansen, S. E., Evangelidis, C. P., Papadopoulos, G. A. (2019) Imaging slab detachment within the Western Hellenic Subduction Zone. Geochemistry, Geophysics, Geosystems 20:895–912
Humphreys, E., Clayton, R.W. (1988) Adaptation of back projection tomography to seismic travel time problems. J. Geophys. Res. 93:1073-1085
Hollenstein, C., M. D. Müller, A. Geiger, Kahle, H.-G. (2008) Crustal motion and deformation in Greece from a decade of GPS measurements, 1993–2003. Tectonophysics 449:17–40
Jaxybulatov, K., Koulakov, I., Ibs-von Seht, M., Klinge, K., Reichert, C., Dahren, B., Troll, V.R. (2011) Evidence for high fluid/melt content beneath Krakatau volcano (Indonesia) from local earthquake tomography. J. Volc. Geoth. Res. 206(3-4):96-105
Kahle, H.-G., Muller, M.V., Geiger, A., Danuser, G., Mueller, St., Veis, G., Billiris, H., Paradissis, G. (1995) The strain field in NW Greece and the Ionian Islands; results inferred from GPS measurements. Tectonophysics 249:44–52
Kapetanidis, V., Papadimitriou, P., Makropoulos, K. (2010) A cross-correlation technique for relocation of seismicity in the western Corinth rift. Bull. Geol. Soc. Greece, Proc. 12th Intl. Cong. Patras, May 2010, XLIII(4):2015-2015
Kapetanidis, V., Kassaras, I. (2019) Contemporary crustal stress of the Greek region deduced from earthquake focal mechanisms. J. Geodyn. 123:55–82
Karakonstantis, A. (2017) 3D simulation of crust and upper mantle structure in the broader Hellenic area through Seismic Tomography. Dissertation, National and Kapodistrian University of Athens.
Kassaras, I., Kapetanidis, V., Karakonstantis, A., Kaviris, G., Papadimitriou, P., Voulgaris, N., Makropoulos, K., Popandopoulos, G., Moshou, A. (2014) The April–June 2007 Trichonis Lake earthquake swarm (W. Greece): New implications toward the causative fault zone. J. Geodyn. 73:60-80
Kassaras, I., Kapetanidis, V., Karakonstantis, A. (2016) On the spatial distribution of seismicity and the 3D tectonic stress field in western Greece. Phys. Chem. Earth, Parts A/B/C 95:50-72
Kiratzi, A., Sokos, E., Ganas, A., Tselentis, A., Benetatos, C., Roumelioti, Z., Serpetsidaki, A., Andriopoulos, G., Galanis, O., Petrou, P. (2008) The April 2007 earthquake swarm near Lake Trichonis and implications for active tectonics in western Greece. Tectonophysics 452:51–65
Koukouvelas, I., Mpresiakas, A., Sokos, E., Doutsos, T. (1996) The tectonic setting and earthquake hazards of the 1993 Pyrgos earthquake, Peloponnese, Greece. J. Geol. Soc. London 153:39–49
Koukouvelas, I., Kokkalas, S., Xypolias, P. (2009) Surface deformation during the Mw 6.4 (8 June 2008) Movri earthquake in the Peloponnese and its implications for the seismotectonics of Western Greece. Int. Geol. Rev. 52(2-3):249-268
Koulakov, I. (2009) LOTOS code for local earthquake tomographic inversion. Benchmarks for testing tomographic algorithms. Bull. Seism. Soc. Am. 99(1):194-214
Koulakov, I., Bindi, D., Parolai, S., Grosser, H., Milkereit, C. (2010) Distribution of Seismic Velocities and Attenuation in the Crust Beneath the North Anatolian Fault (Turkey) from Local Earthquake Tomography. Bull. Seism. Soc. Am. 100(1):207-224
Koulakov, I., Shapiro, N. (2015) Seismic Tomography of Volcanoes. In: Beer M., Kougioumtzoglou I., Patelli E., Au IK. (Eds.) Encyclopedia of Earthquake Engineering. Springer.
Lagios, E., Sakkas, V., Papadimitriou, P., Damiata, B.N., Parcharidis, I., Chousianitis, K., Vassilopoulou, S. (2007) Crustal deformation in the Central Ionian Islands (Greece): Results from DGPS and DInSAR analyses (1995-2006). Tectonophysics 444:119-145
Lees, J.M., Crosson, R.S. (1989) Tomographic inversion for three- dimensional velocity structure at Mount St. Helens using earthquake data, J. Geophys. Res. 94:148-227
Lekkas, E., Fountoulis, I., Papanikolaou, D. (2000) Intensity Distribution and Neotectonic Macrostructure Pyrgos earthquake data (26 March 1993, Greece). Natural Hazards 21:19–33
Mavroulis, S., Fountoulis, I., Lekkas, E. (2010) Environmental effects caused by the Andravida (08-06-2008, ML = 6.5, NW Peloponnese, Greece) earthquake. Geologically Active: 11th IAEG Congress, Taylor & Francis Group, Auckland, New Zealand, 451-459
Nakajima, J., Hasegawa, A., Horiuchi, S., Yoshimoto, K., Yoshida, T., Umino, N. (2006) Crustal heterogeneity around the Nagamachi-Rifu fault, northeastern Japan, as inferred from travel-time tomography. Earth Planets Space 58:843–853
Papadimitriou, P., Kaviris, G., Makropoulos, K. (2006) The Mw=6.3, 2003 Lefkada Earthquake (Greece) and induced transfer changes. Tectonophysics 423:73-82
Papadimitriou, P., Kaviris, G., Karakonstantis A., Makropoulos, K. (2010a) The Cornet seismological network: 10 years of operation, recorded seismicity and significant applications. Ann. Geol. Pays Hell 45:193-208
Papadimitriou, P., Agalos, A., Moshou, A., Kapetanidis, V., Karakonstantis, A., Kaviris, G., Kassaras, I., Voulgaris, N., Makropoulos, K. (2010b) An important number of recent significant earthquakes in Greece. Book of Abstracts, 32nd ESC General Assembly, Montpellier, France, 225
Papadopoulos, G.A., Karastathis, V., Kontoes, C., Charalampakis, M., Fokaefs, A., Papoutsis, I. (2010) Crustal deformation associated with east Mediterranean strike-slip earthquakes: The 8 June 2008 Movri (NW Peloponnese), Greece, earthquake (Mw6.4). Tectonophysics 492:201–212
Papazachos, B., Papazachou, C. (1997) The Earthquakes of Greece. P. Ziti & Co, Thessaloniki, Greece, 97-110
Pavlides, S., Caputo, R., Sboras, S., Chatzipetros, A., Papathanasiou, G., Valkaniotis, S. (2010) The Greek catalogue of active faults and database of seismogenic sources. Bull. Geol. Soc. Greece XLIII(1):486-494
Roumelioti, Z., Benetatos, C., Kiratzi, A., Stavrakakis, G., Melis, N. (2004) A study of the 2 December 2002 (M5.5) Vartholomio (western Peloponnese, Greece) earthquake and of its largest aftershocks. Tectonophysics 387(1-4):65–79
Sachpazi, M., Laigle, M., Charalampakis, M., Diaz, J., Kissling, E., Gesret, A., Becel, A., Flueh, E., Miles, P., Hirn, A., (2016) Segmented Hellenic slab rollback driving Aegean deformation and seismicity. Geophys. Res. Lett. 43:651–658
Sanders, C., Ponko, S., Nixon, L., Schwartz, E. (1995) Seismological evidence for magmatic and hydrothermal structure in Long Valley caldera from local earthquake attenuation and velocity tomography. J. Geophys. Res. 100:8311–8326
Selverstone, J., Morteani G., Staude, J.M. (1991) Fluid channeling during ductile shearing: transformation of granodiorite into aluminous schist in the Tauern Window, Eastern Alps. J. Metamorph. Geol. 9:419-431
Serpetsidaki, A., Elias, P., Ilieva, M., Bernard, P., Briole, P., Deschamps, A., Lambotte, S., Lyon-Caen, H., Sokos, E., Tselentis, G.A. (2014) New constraints from seismology and geodesy on the Mw = 6.4 2008 Movri (Greece) earthquake: evidence for a growing strike-slip fault system. Geophys. J. Int. 198 (3):1373–1386
Takei, Y. (2002) Effect of pore geometry on VP/VS: From equilibrium geometry to crack. J. Geophys. Res. 107(B2):2043
Toomey, D.R., Foulger, G.R. (1989) Tomographic inversion of local earthquake data from the Hengill-Grensdalur Central Volcano Complex, Iceland. J. Geophys. Res. 94(B12):17497–17510
Tselentis G.-A. (1998) Fault lengths during the Patras 1993 earthquake sequence as estimated from the pulse width of initial P wave. Pure Appl. Geophys. 152(1):75-89
Wessel, P., Smith, W.H.F. (1995) New version of the Generic Mapping Tools released. EOS Trans. AGU 76:329
Zygouri, V., Koukouvelas, I.K., Kokkalas, S., Xypolias, P., Papadopoulos, G.A. (2015) The Nisi Fault as a key structure for understanding the active deformation of the NW Peloponnese, Greece. Geomorph. 237:142–156