A5014866688- earthquake and tectonic studies
- Earthquake Detection and Analysis
- High-pressure geophysics and materials
- Geological and Geochemical Analysis
- Seismology and Earthquake Studies
- Geological and Geophysical Studies Worldwide
- Geochemistry and Geologic Mapping
- Karst Systems and Hydrogeology
- Geophysics and Gravity Measurements
- Geology and Paleoclimatology Research
- Marine and environmental studies
- Geological Formations and Processes Exploration
- Astronomical Observations and Instrumentation
- Complex Systems and Time Series Analysis
- GNSS positioning and interference
National Observatory of Athens
2021-2024
Aristotle University of Thessaloniki
2008-2019
Geoanalysis (Greece)
2017
Abstract A data set of earthquake hypocenters and associated traveltime residuals for seismic phases recorded by seismograph stations globally is an essential starting point most studies global seismicity Earth structure. Such sets have been produced in various forms national international agencies since the beginning instrumental seismology at turn twentieth century. We reprocessed comprehensive used to produce routinely distributed bulletins International Seismological Centre (ISC) 1964...
The 2014 Kefalonia earthquake sequence started on 26 January with the first main shock (MW6.1) and aftershock activity extending over 35 km, much longer than expected from causative fault segment. second (MW6.0) occurred 3 February an adjacent segment, where distribution was remarkably sparse, evidently encouraged by stress transfer of shock. aftershocks regional catalog were relocated using a 7-layer velocity model station residuals, their evidenced two segments striking almost N-S dipping...
Catalogue-based studies are of central importance in seismological research, to investigate the temporal, spatial and size distribution earthquakes specified study areas. Methods for estimating fundamental catalogue parameters like Gutenberg–Richter (G-R) b-value completeness magnitude (Mc) well established routinely applied. However, magnitudes reported seismicity catalogues contain measurement uncertainties which may significantly distort estimation derived parameters. In this study, we...
Abstract We study the strong 12 October 2021, $$M_W$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msub> <mml:mi>M</mml:mi> <mml:mi>W</mml:mi> </mml:msub> </mml:math> =6.4, offshore Zakros, Crete earthquake, and its seismotectonic implications. obtain a robust location (azimuthal gap equal to 17 $$^{\circ }$$ <mml:msup> <mml:mrow /> <mml:mo>∘</mml:mo> </mml:msup> ) for mainshock by combining all freely available local, regional teleseismic phase arrivals (direct depth...
Abstract We present an integrated study of subsurface and surficial karst landforms to unravel the uplift history landscape in a tectonically‐active area. To this end, we apply multidisciplinary approach by combining cave geomorphology Th/U dating speleothems with remote sensing plus geophysical imaging surface landforms. use as example Mt. Menikio northern Greece where four caves share well‐defined epiphreatic/shallow phreatic characteristics that are related distribution buried doline...
This paper introduces "MISTIC", a magnitude independent program for the analysis of spatio-temporal earthquake clustering, developed on basis simple clustering algorithm which is implemented in Matlab. The method conceptually based upon comparison inter-event time and epicentral/hypocentral distance between subsequent events, with pre-defined values, without any constraints. code identifies spatial concentrations seismic activity exhibit enhanced occurrence rates, significantly higher than...
Seismicity in the area of Mygdonia basin (northern Greece) is lately characterized by a lack strong events (M≥5.0) on seismogenic faults known to have been repeatedly activated past. Only small moderate magnitude earthquakes (M≤4.8) occurred since 2000 area. Therefore, microseismicity only available information be exploited for identification active and hazard assessment, it may occur everywhere, as well onto major hazardous faults. Earthquakes recorded between 2014 by Hellenic...
Abstract We study the major M w 7.0, 30 October 2020, Samos earthquake and its aftershocks, by calculating improved locations using differential travel times waveform cross-correlations.We image rupture of mainshock local strong motion data, we examine Coulomb stress evolution prior to mainshock, as well coseismic changes. Lastly, estimate produced shaking all available information from data testimonies. Earthquake relocations reveal activation E-W oriented, Kaystrios fault, in North basin...
Eastern Macedonia and Thrace are characterized by moderate seismicity compared to the adjacent North Aegean area, as it is derived from both historical information instrumental records. The known strong (M>6.5) earthquakes that occurred during past three centuries, however, have caused appreciable casualties for this reason seismic hazard assessment in study area of considerable social importance. These events (Didimoteiho earthquake (M=7.4) 1752, Komotini (M=6.7) 1784 Drama (M=7.3) 1829)...