Abstract
The identification of distinct seismic regions and features’ extraction of theirs could provide valuable information towards the better understanding of the underlying physics, the generation mechanism and the behavior of the seismic phenomenon. This research paper works towards that direction and unveils the potential presence of a distinct seismic region located in between the Ionean sea and the Cretan see, extending south-east of Peloponnesus, Greece. This observation has emerged as a result of the development and application of a spatio temporal clustering algorithm based on expert knowledge upon seismic data provided by the Geodynamics Institute of Athens, and is further supported by geological observations, which have unveiled the presence of two parallel groups of underground faults beneath the newly discovered potential distinct seismic region. The overall spatio temporal clustering results throughout the Greek vicinity are also in accordance with empirical observations reported in the literature and coincide with cartographic groups of underground faults of Greece.
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References
Caputo R, Catalano S, Monaco C, Romagnoli G, Tortorici G, Tortorici L (2010) Active faulting on the island of Crete (Greece). Geophys J Int 183:111–126
Dobrovolsky IP, Gershenzon NI, Gokhberg MB (1989) Theory of electrokinetic effects occurring at the final stage in the preparation of a tectonic earthquake. Phys Earth Planet Inter 57:144–156
Drakatos G, Latoussakis J (2001) A catalog of aftershock sequences in Greece (1971–1997): their spatial and temporal characteristics. J Seismol 5:137–145
Georgoulas G, Konstantaras A, Katsifarakis E, Stylios C, Maravelakis E, Vachtsevanos G (2013) “Seismic-mass” density-based algorithm for spatio-temporal clustering. Expert Syst Appl 40:4183–4189
GI-NOA (2012) National observatory of athens institute of geodynamics seismicity catalogues. [Online] http://www.gein.noa.gr/services/cat.html
Kagan YY, Jackson D (1991) Long term earthquake clustering. Geophys Int 104:117–133
Katsifarakis E, Konstantaras A, Maravelakis E, Skounakis E and Varley MR (2011) Seismic clustering algorithms. Geophysical Research Abstracts, 13, EGU2011-4259, EGU General Assembly, Vienna
Kiratzi A, Papazachos CB (1995) Active crustal deformation from the Azores triple junction to the Middle East. Tectonophysics 243:1–24
Kokinou E, Vafidis A, Loucogiannakis M, Louis J (2003) Deep seismic imaging and velocity estimation in Ionian sea. J Balkan Geophys Soc 6(2):100–116
Kokinou E, Kamberis E, Vafidis A, Monopolis D, Ananiadis G, Zelelidis A (2005) Deep seismic reflection data from offshore Western Greece: a new crustal model for the Ionian sea. J Pet Geol 28(2):81–98
Konstantaras A (2013) Classification of distinct seismic regions and regional temporal modelling of seismicity in the vicinity of the Hellenic Seismic Arc. IEEE J Sel Top Appl Earth Obs Remote Sens 6(4):1857–1863
Konstantaras A, Katsifarakis E, Maravelakis E, Skounakis E, Kokkinos E, Karapidakis E (2012) Intelligent spatial-clustering of seismicity in the vicinity of the Hellenic Seismic Arc. Earth Sci Res 1(2):1–10
Moratto L, Orlecka B, Costa G, Suhaldoc P, Papaioannou C, Papazachos C (2007) A deterministic seismic hazard analysis for shallow earthquakes in Greece. Tectonophysics 442:66–82
Neri G (1990) Earthquake clustering on volcanic and tectonic structures. Tectonophysics 175(1–3):35–45
Papazachos BC, Papazachou CB (2003) The Earthquakes of Greece, Ziti Editions, Thessaloniki, pp 286
Papazachos BC, Makropoulos KC, Latoussakis J and Theodulidis NP (1989) Elaboration of a map of seismic hazard in Greece. 2nd report for the Program of Organization of Antiseismic Design and Protection, pp 24
Papazachos BC, Mountrakis DΜ, Papazachos CΒ, Tranos ΜD, Karakaisis GF, Savvaidis ΑS (2001) Faults that caused known severe earthquakes in Greece and surrounding area from the 5th century B.C. until today. 2nd Greek Conference of Earthquake Engineering and Technical Seismology, T.E.E., Thessaloniki, pp. 17–26
Seismotectonic map of Greece with seismo-geologic elements (1989) Institute of geological and mineral research, [Online] http://www.igme.gr
Skounakis E, Konstantaras A, Katsifarakis E, Maravelakis E, Banitsas K and Varley MR (2011) Seismic data clustering management system. Geophysical Research Abstracts, 13, EGU2011-12120, EGU General Assembly
RMS Special Report (2008) Earthquake clustering due to stress interactions. Risk Management Solutions, Inc
Wheatherill G, Burton P (2009) Delineation of shallow seismic source zones using K-means cluster analysis, with application to the Aegean region. Geophys J Int 176:565–588
Zubkov SI (1987) The appearance times of earthquake precursors. Izv Akad Nauk SSSR Fiz Zemli (Solid Earth) 5:87–91
Acknowledgments
The author would like to thank the State’s Scholarship Foundation of Greece for initiating funding for this research with the Post-Doctoral Research Programme (project 006.051) which paved the way towards this publication.
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Communicated by: H. A. Babaie
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Konstantaras, A.J. Expert knowledge-based algorithm for the dynamic discrimination of interactive natural clusters. Earth Sci Inform 9, 95–100 (2016). https://doi.org/10.1007/s12145-015-0236-0
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DOI: https://doi.org/10.1007/s12145-015-0236-0