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Exploring geodynamics at different depths with shear wave splitting

Grund, Michael

Abstract:
Dynamic processes in the Earth's interior are the dominant driving forces behind the continuous deformation-related reworking of its surface. The characterization of deformation caused by past tectonic events near the Earth's surface as well as mapping of ongoing dynamic-driven processes deep inside the Earth are therefore major objectives to understand the dynamics of our planet. Seismic anisotropy, the direction-dependence of seismic wave speed, is directly related to deformation processes and can be "felt" by passing seismic waves. Although seismic anisotropy is a well-known phenomenon, the individual contributions from different depth ranges are still debated. However, recordings available from
dense and large-aperture seismic station networks, provide the opportunity for resolving both, small-scale variations relatively close to the surface as well as so far unknown structures at greater depth.
In 2012, an international seismological field experiment, called ScanArray, was initiated. The combination of 72 temporary broadband stations with long-running national permanent stations and arrays resulted in a recording network consisting of 266 seismic stations in total that were distributed across the Fennoscandian peninsula in northern Europe. ... mehr

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Volltext §
DOI: 10.5445/IR/1000091425
Veröffentlicht am 04.03.2019
Coverbild
Zugehörige Institution(en) am KIT Geophysikalisches Institut (GPI)
Publikationstyp Hochschulschrift
Jahr 2019
Sprache Englisch
Identifikator urn:nbn:de:swb:90-914257
KITopen-ID: 1000091425
Verlag KIT, Karlsruhe
Umfang XV, 211 S.
Abschlussart Dissertation
Fakultät Fakultät für Physik (PHYSIK)
Institut Geophysikalisches Institut (GPI)
Prüfungsdatum 08.02.2019
Referent/Betreuer apl. Prof. J. Ritter
Projektinformation Lithos-Capp-2 (DFG, DFG EIN, RI 1133/11-2)
LITHOS-CAPP (DFG, DFG EIN, RI 1133/11-1)
Schlagworte shear wave splitting, seismic anisotropy, Fennoscandia, LLSVP, ScanArray, lowermost mantle, deformation, geodynamics, D", Baltic Shield
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