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SUMMARY:Investigating seismic anisotropy in the Central Mediterranean - Fo
 ivos Karakostas\, UCL
DTSTART:20241016T130000Z
DTEND:20241016T140000Z
UID:TALK220798@talks.cam.ac.uk
CONTACT:Tom Merry
DESCRIPTION:Seismic anisotropy exists in various depths on Earth. However\
 , computational complexities and limited data coverage often lead many sei
 smic tomographic efforts to neglect it. This isotropic assumption can lead
  to various misinterpretations\, which become more important when the spat
 ial resolution is increased. For this reason\, we developped a computation
 al framework for the full-waveform inversion of the 3D anisotropic structu
 re of the subduction zone of the Ionian slab at the Tyrrhenian Sea (Italy)
 \, to a depth of approximately 500 km below the Tyrrhenian Sea -- a region
  of great geodynamic interest mainly because of the Calabro-Ionian subduct
 ion zone. In order to overcome the lack of regional seismic data that offe
 r a good coverage of the studied region\, we developed a hybrid computatio
 nal framework for using teleseismic sources. This was achieved through the
  use of two different softwares\, AxiSEM for the computation of the global
  field in a low definition 1D model and SPECFEM3D Cartesian for the invest
 igation of the anisotropy in the region of interest. In this talk it is pr
 esented the methodology\, from the construction of the computational frame
 work to the final data processing\, and the interpretation of these result
 s as the anisotropic signature in the region. In addition\, it is presente
 d the implementation of the same framework for the needs of SKS splitting 
 measurements.
LOCATION:Wolfson Lecture Theatre
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