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DEVELOPING SEISMIC INTENSITY MAPS FROM TWITTER DATA; THE CASE STUDY OF LESVOS, GREECE 2017 EARTHQUAKE: ASSESSMENTS, IMPROVEMENTS AND ENRICHMENTS ON THE METHODOLOGY
seismic intensity twitter volunteered geographic information VGI
2018/4/18
This article presents an effort to validate and further improve a previously published innovative approach for drawing macroseismic intensity maps from data extracted from sources of volunteered geogr...
DEVELOPING SEISMIC INTENSITY MAPS FROM TWITTER DATA; THE CASE STUDY OF LESVOS, GREECE 2017 EARTHQUAKE: ASSESSMENTS, IMPROVEMENTS AND ENRICHMENTS ON THE METHODOLOGY
seismic intensity twitter volunteered geographic information VGI
2018/5/8
This article presents an effort to validate and further improve a previously published innovative approach for drawing macroseismic intensity maps from data extracted from sources of volunteered geogr...
SPATIAL INEQUALITY IN THE ACCESSIBILITY TO HOSPITALS IN GREECE
Spatial Analysis Spatial Accessibility Public Hospitals Inequalities
2017/8/10
The aim of this paper is to measure the spatial accessibility to public health care facilities in Greece. We look at population groups disaggregated by age and socioeconomic characteristics. The purpo...
Stress tensor inversion in Western Greece using earthquake focal mechanisms from the Kozani-Grevena 1995 seismic sequence
stress distributions inversion fault plane solutions Greece
2015/10/8
Stress tensor inversion has been applied to estimate principal stress axes orientations in Western Greece, from 178 earthquake fault plane solutions from the Kozani-Grevena May 13, 1995 sequence. All ...
A comparative study of a stochastic and deterministic simulation of strong ground motion applied to the Kozani-Grevena (NW Greece) 1995 sequence
simulation ground motion earthquake EGF-Kozani
2015/9/30
We present the results of a comparative study of two intrinsically different methodologies, a stochastic one and a deterministic one, performed to simulate strong ground motion in the Kozani area (NW ...
The precursory earthquake swarm in Greece
precursors swarm seismogenesis earthquake prediction Hellenic arc
2015/9/29
The Hellenic subduction region displays the same precursory swarm phenomenon as has been found in comparable regions of New Zealand and Japan. In the earthquake catalogue of the Aristotle University o...
Late Cenozoic deformation of the Gavrovo and Ionian zones in NW Peloponnesos (Western Greece)
external hellenides gavrovo thrust NW Peloponnesos seismic modeling
2015/9/29
The structural deformation of Mesozoic-Tertiary sediments of the Ionian and Gavrovo zones in NW Peloponnesos is related to the propagation of a fold-thrust system during the Cenozoic. The sediments of...
Energy and polarization of the telluric field in correlation with seismic activity in Greece
earthquake precursor telluric field electric field polarization
2015/9/28
Many attempts have been made to disclose anomalous changes of the electromagnetic field in relation with tectonic earthquakes. We tentatively develop a new approach based on the energy and polarity of...
Properties of the geoelectric structure that promote the detectionof electrotelluric anomalies:the case of Ioannina,Greece
Electrotelluric Greece magnetotelluric Mohr circle noise reduction seismic precursor tensor decomposition
2015/9/28
The reliable detection and identification of electrotelluric anomalies that could be considered as precursory phenomena of earthquakes become fundamental aspects of earthquake prediction research. Spe...
Investigating the time dynamics of geoelectrical signals measured in two seismotectonic environments in the Mediterranean region: the Southern Apennine chain (Southern Italy) and the Hellenic arc (Crete Island, Greece)
Geoelectrical signal time dynamics extreme events earthquake prediction
2015/9/28
In this paper we explore the time dynamics of geoelectrical signals measured in two seismic active areas in the Mediterranean region: the Southern Apennine chain (Italy) and the Hellenic arc (Crete Is...
Discussion on telluric field and seismic activity in Central Greece
telluric earthquake precursors prediction
2015/9/28
Two stations were installed in the Southeastern Thessaly basin (Central Greece), recording the geomagnetic and telluric fields from 1993 to 1996. The aim was to detect long-term abnormal changes of th...
Historical earthquake investigations in Greece
historical earthquakes earthquake catalogues
2015/9/14
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...
A probabilistic seismic hazard assessment for Greece and the surrounding region including site-specific considerations
seismicity of Greece probabilistic seismic hazard peak ground acceleration design earthquake procedure
2015/9/11
A probabilistic approach was applied to map the seismic hazard in Greece and the surrounding region. The procedure does not require any specification of seismic sources or/and seismic zones and allows...
Microearthquake study of the broader Thessaloniki area (Northern Greece)
microseismicity fault plane solutions active tectonics Northern Greece
2015/9/8
A temporary network of twelve portable digital seismological stations was operated around the city of Thessaloniki (Northern Greece) for a period of 19 months (from July 2001 to April 2002 and from Oc...
Deep water prestack multiple suppression on reflection data from ionian sea (offshore western greece)
Deep reflection profiling prestack multiple suppression Ionian sea Hellenic arc
2015/9/2
Multiple attenuation comprises a very important phase of the seismic reflection processing because it removes undesirable effects occurred during the propagation of the seismic signal in the earth. Th...