Research Activities - Projects

Research

The research activities of the Geodynamics Institute cover a broad spectrum of Seismology, Physics of the Earth's Interior and Geophysics. In particular, we do research in the following fields:

Seismicity

• Preshock, mainshock, aftershock sequences
  
• Variations of seismic activity
• Seismotectonics of various regions
• Microseismic activities along selected seismic zones
• Seismic potential of active faults
• Seismic quiescence of regions of Greece and surrounding areas
• Spatial evolution of seismic activity
• Induced seismic activity
• Activation of seismic regions
• Interaction of active faults
• Recognition of characteristics of seismic activity

Focal mechanisms of earthquakes - Properties of the seismic source

• Focal mechanisms of earthquakes
• Spectral characteristics of preshocks, mainshocks and aftershocks
• Rupture mode of strong earthquakes
• Dynamic parameters of ruptures

Propagation of seismic waves - Strong Ground Motion

• Attenuation of strong ground motion
• Directivity of propagation of seismic energy
• Synthetic strong ground motions (stochastic procedures)
• Synthetic strong ground motions using Green functions

Seismic hazard - Microzonation studies

• Improvement of algorithms for calculation of expected seismic accelerations, velocities and displacements
• Correlation of different methodologies
• Improvement of algorithms for calculation of statistical parameters
• Improvement of microzonation methods

Structure

• Structure of Earth's crust and mantle
• Distribution of seismic velocities
• Seismic tomography and determination of seismic parameters

Earthquake prediction

• Multidisciplinary, parametric investigation of geophysical-seismological parameters
  Recognition of characteristic patterns of seismicity
• Geophysical methods (magnetotelluric)
• Statistical methods
• Spatio-temporal evolution of seismicity
• Algorithms of amalgamation of the different characteristics of seismic activity

Seismotectonics - Paleoseismology

• Active faults and tectonic stress levels
• Correlation of microseismic activity with active faults and discovery of new fracture zones
• Historical seismicity and association with known faults

Seismic Sea Waves (Tsunamis)

• Catalogue compilation
• Generation mechanisms and propagation
• Wave simulation
• Palaeotsunami investigation
• Hazard assessment

  and applications in the

• Development of protection measures
• Awareness and Education

Geological Remote Sensing

• Remote sensing of active faults
• Remote sensing of landslides
• Fault segmentation - neotectonics
• Thermal remote sensing of volcanic arcs and known faults
• Hyperspectral remote sensing of hydrothermal mineralisations
• Digital geomorphometry
• SAR Interferometry
• Archaeological applications of remote sensing

Applied Geophysics

• Reflection and Refraction Seismics
• Seismic tomography
• Geoelectrical imaging
• Ground Penetrating Radar
• Magnetic and Gravity methods
• Electromagnetic methods

The above methods are applied to:

• Construction works,
• Geological, mining, environmental projects
• Archaeological surveys