Shear wave splitting in the Eastern Alps observed at the TRANSALP network

Kummerow, Jörn; Kind, Rainer; Transalp Working Group,

doi:10.1016/j.tecto.2005.10.023

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

Shear wave splitting in the Eastern Alps observed at the TRANSALP network

Authors

/persons/resource/jule

Kummerow, Jörn
Deutsches GeoForschungsZentrum;
Publikationen aller GIPP-unterstützten Projekte, Deutsches GeoForschungsZentrum;

/persons/resource/kind

Kind, Rainer
2.4 Seismology, 2.0 Physics of the Earth, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;
Publikationen aller GIPP-unterstützten Projekte, Deutsches GeoForschungsZentrum;

Transalp Working Group,
Deutsches GeoForschungsZentrum;
Publikationen aller GIPP-unterstützten Projekte, Deutsches GeoForschungsZentrum;

External Ressource

No external resources are shared

Fulltext (public)

There are no public fulltexts stored in GFZpublic

Supplementary Material (public)

There is no public supplementary material available

Citation

Kummerow, J., Kind, R., Transalp Working Group (2006): Shear wave splitting in the Eastern Alps observed at the TRANSALP network. - Tectonophysics, 414, 1-4, 117-125.
https://doi.org/10.1016/j.tecto.2005.10.023

Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_235140

Abstract

Data from the temporary TRANSALP seismic network were analysed to investigate the seismic anisotropy in the upper mantle beneath the Eastern Alps. We operated mostly short period and some broadband stations in a dense linear array, which transects the Eastern Alps at ~128 E longitude. Recorded SKS and SKKS phases with different backazimuths were used simultaneously to calculate the splitting parameters of delay time and fast axis direction for each seismic station. While we found variations in the delay times between ~0.8 and 2.0 s, the determined fast axis directions prove to be rather consistent along the profile (608–708 N). They coincide well with the trend of the Eastern Alps, thus suggesting orogen-parallel flow in the upper mantle. Our findings support the earlier proposed idea that the Adriatic indenter which was forced northwards into the European plate during the late stage of the Alpine orogeny, triggered an escape movement to the less constrained Pannonian basin to the east.