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Makropoulos, K. C.
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Makropoulos, K. C.
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- PublicationOpen AccessThe SHARE European Earthquake Catalogue (SHEEC) 1000-1899(2013)
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;Stucchi, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia ;Rovida, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia ;Gomez Capera, A. A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia ;Alexandre, P.; Observatoire Royal de Belgique ;Camelbeeck, T.; Observatoire Royal de Belgique ;Demircioglu, M. B.; Bogazici University, Kandilli Observatory and Earthquake Research Institute ;Gasperini, P.; Università di Bologna, Dipartimento di Fisica ;Kouskouna, V.; University of Athens, Department of Geophysics and Geothermics ;Musson, R. M.W.; British Geological Survey ;Radulian, M.; National Institute for Earth Physics ;Sesetyan, K.; Bogazici University, Kandilli Observatory and Earthquake Research Institute ;Vilanova, S.; Institute for Structural Engineering, Territory and Construction ;Baumont, D.; Institut de Radioprotection et de Sûréte Nucléaire ;Bungum, H.; NORSAR ;Faeh, D.; Swiss Seismological Service ;Lenhardt, W.; Zentralanstalt für Meteorologie und Geodynamik ;Makropoulos, K.; University of Athens, Department of Geophysics and Geothermics ;Martinez Solares, J. M.; Instituto Geografico Nacional ;Scotti, O.; Institut de Radioprotection et de Sûréte Nucléaire ;Živčić, M.; Agencija Republike Slovenije za okolje ;Albini, P.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia ;Batllo, J.; Universidade de Lisboa, Faculdade de Ciências ;Papaioannou, C.; Institute for Engineering Seismology and Earthquake Engineering ;Tatevossian, R.; Russian Academy of Sciences, Institute of Physics of the Earth ;Locati, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia ;Meletti, C.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia ;Viganò, D.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia ;Giardini, D.; Swiss Seismological Service; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; In the frame of the European Commission project “Seismic Hazard Harmonization in Europe” (SHARE), aiming at harmonizing seismic hazard at a European scale, the compilation of a homogeneous, European parametric earthquake catalogue was planned. The goal was to be achieved by considering the most updated historical dataset and assessing homogenous magnitudes, with support from several institutions. This paper describes the SHARE European Earthquake Catalogue (SHEEC), which covers the time-window 1000-1899. It strongly relies on the experience of the European Commission project “Network of Research Infrastructures for European Seismology” (NERIES), a module of which was dedicated to create the European “Archive of Historical Earthquake Data” (AHEAD) and to establish methodologies to homogenously derive earthquake parameters from macroseismic data. AHEAD has supplied the final earthquake list, obtained after sorting duplications out and eliminating many fake events, and the most updated historical dataset. Macroseismic data points (MDPs) provided by AHEAD have been processed with updated, repeatable procedures, regionally calibrated against a set of recent, instrumental earthquakes, to obtain earthquake parameters. From the same data, a set of epicentral intensity-to-magnitude relations has been derived, with the aim of providing another set of homogeneous Mw estimates. Then, a strategy focussed on maximizing the homogeneity of the final epicentral location and Mw, has been adopted. Special care has been devoted also to supply location and Mw uncertainty. The paper focuses on the procedure adopted for the compilation of SHEEC and briefly comments on the achieved results.1316 252 - PublicationRestrictedSeismicity, deformation and seismic hazard in the western rift of Corinth: New insights from the Corinth Rift Laboratory (CRL)(2006)
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;This paper presents the main recent results obtained by the seismological and geophysical monitoring arrays in operation in the rift of Corinth, Greece. The Corinth Rift Laboratory (CRL) is set up near the western end of the rift, where instrumental seismicity and strain rate is highest. The seismicity is clustered between 5 and 10 km, defining an active layer, gently dipping north, on which the main normal faults, mostly dipping north, are rooting. It may be interpreted as a detachment zone, possibly related to the Phyllade thrust nappe. Young, active normal faults connecting the Aigion to the Psathopyrgos faults seem to control the spatial distribution of the microseismicity. This seismic activity is interpreted as a seismic creep from GPS measurements, which shows evidence for fast continuous slip on the deepest part on the detachment zone. Offshore, either the shallowest part of the faults is creeping, or the strain is relaxed in the shallow sediments, as inferred from the large NS strain gradient reported by GPS. The predicted subsidence of the central part of the rift is well fitted by the new continuous GPS measurements. The location of shallow earthquakes (between 5 and 3.5 km in depth) recorded on the on-shore Helike and Aigion faults are compatible with 50° and 60° mean dip angles, respectively. The offshore faults also show indirect evidence for high dip angles. This strongly differs from the low dip values reported for active faults more to the east of the rift, suggesting a significant structural or rheological change, possibly related to the hypothetical presence of the Phyllade nappe. Large seismic swarms, lasting weeks to months, seem to activate recent synrift as well as pre-rift faults. Most of the faults of the investigated area are in their latest part of cycle, so that the probability of at least one moderate to large earthquake (M = 6 to 6.7) is very high within a few decades. Furthermore, the region west to Aigion is likely to be in an accelerated state of extension, possibly 2 to 3 times its mean interseismic value. High resolution strain measurement, with a borehole dilatometer and long base hydrostatic tiltmeters, started end of 2002. A transient strain has been recorded by the dilatometer, lasting one hour, coincident with a local magnitude 3.7 earthquake. It is most probably associated with a slow slip event of magnitude around 5 ± 0.5. The pore pressure data from the 1 km deep AIG10 borehole, crossing the Aigion fault at depth, shows a 1 MPa overpressure and a large sensitivity to crustal strain changes.77 1 - PublicationOpen AccessHistorical earthquake investigations in Greece(2004)
; ; ;Kouskouna, V.; Department of Geophysics and Geothermics, National and Kapodistrian University of Athens, Greece ;Makropoulos, K.; Department of Geophysics and Geothermics, National and Kapodistrian University of Athens, Greece; The active tectonics of the area of Greece and its seismic activity have always been present in the country’s history. Many researchers, tempted to work on Greek historical earthquakes, have realized that this is a task not easily fulfilled. The existing catalogues of strong historical earthquakes are useful tools to perform general SHA studies. However, a variety of supporting datasets, non-uniformly distributed in space and time, need to be further investigated. In the present paper, a review of historical earthquake studies in Greece is attempted. The seismic history of the country is divided into four main periods. In each one of them, characteristic examples, studies and approaches are presented.397 348 - PublicationOpen AccessSeismic hazard assessment for Adria(1999-12)
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;Slejko, D.; Osservatorio Geofisico Sperimentale, Trieste, Italy ;Camassi, R.; Gruppo Nazionale Difesa Terremoti c/o Università di Bologna, Italy ;Cecic, I.; Geophysical Survey of Slovenia, Ljubljana, Slovenia ;Herak, D.; Geophysical Institute, University, Zagreb, Croatia ;Herak, M.; Geophysical Institute, University, Zagreb, Croatia ;Kociu, S.; Seismological Institute, Tirana, Albania ;Kouskouna, V.; Department of Geophysics, University, Athens, Greece ;Lapajne, J.; Geophysical Survey of Slovenia, Ljubljana, Slovenia ;Makropoulos, K.; Department of Geophysics, University, Athens, Greece ;Meletti, C.; Gruppo Nazionale Difesa Terremoti c/o Università di Pisa, Italy ;Muco, B.; Seismological Institute, Tirana, Albania ;Papaioannou, C.; Institute of Engineering Seismology and Earthquake Engineering, Thessaloniki, Greece ;Peruzza, L.; Gruppo Nazionale Difesa Terremoti c/o Osservatorio Geofisico Sperimentale, Trieste, Italy ;Rebez, R.; Osservatorio Geofisico Sperimentale, Trieste, Italy ;Scandone, P.; Dipartimento di Scienze della Terra, Università di Pisa, Italy ;Sulstarova, E.; Seismological Institute, Tirana, Albania ;Voulgaris, N.; Department of Geophysics, University, Athens, Greece ;Zivcic, M.; Geophysical Survey of Slovenia, Ljubljana, Slovenia ;Zupancic, P.; Geophysical Survey of Slovenia, Ljubljana, Slovenia; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; The Adriatic region was chosen as one of the test areas in the GSHAP program and, consequently, its seismic hazard was computed. The standard hazard map chosen by GSHAP represents PGA with a 475-year return period. Some other parameters, as the spectral acceleration and the uniform hazard response spectra for the main Adriatic towns, have been computed for a better representation of the regional hazard. The most hazardous area remains identified in the Cephalonia zone, where strong earthquakes frequently occur. The Southern Apennines are characterised by a slightly lower hazard, while the Adriatic Sea itself, the Poplain and the Apulian peninsula are almost aseismic.344 717 - PublicationOpen AccessSimulation of macroseismic field in Central Greece(1996-10)
; ; ; ; ; ;Kouskouna, V.; Department of Geophysic and Geothermy, University of Athens, Panepistimiopolis, Athen,Greece ;Chailas, S.; Department of Geophysic and Geothermy, University of Athens, Panepistimiopolis, Athen,Greece ;Makropoulos, K. C.; Department of Geophysic and Geothermy, University of Athens, Panepistimiopolis, Athen,Greece ;Michalopoulou, D.; Department of Geophysic and Geothermy, University of Athens, Panepistimiopolis, Athen,Greece ;Drakopoulos, J.; Department of Geophysic and Geothermy, University of Athens, Panepistimiopolis, Athen,Greece; ; ; ; The distribution of seismic intensity is generally influenced by major geological and tectonic features and, on a smaller scale, by local geological conditions, such as the type of surface soil, the surface-to-bedrock soil structure in sedimentary basins and the depth of the saturated zone, The present paper attempted to determine the distribution of macroseismic intensities based on published attenuation laws in the area of Central Greece, using the epicentral intensity, magnitude, length and direction of fault and a considerable number of observation sites, for which the above mentioned information is available, The expected intensity values were then compared to those observed in the same sites, from four earthquakes in Volos, Central Greece, for which the fault plane solutions are also known. The deviations of the observed values from the theoretical model were then related to the local geological conditions and the corresponding correction factor determined for each site.122 156