[Back]

M. Behm:
"The CELEBRATION 2000 Experiment: Results from the Alpine Area";
Poster: AGU Fall Meeting San Francisco, San Francisco; 2002-12-01 - 2002-12-07; in: "AGU 2002", AGU, (2002).

The northeastern part of the Eastern Alps was covered by the third deployment of CELEBRATION 2000. Both inline and cross line shots from this experiment supplied essential travel time information for Pg, PmP and Pn arrivals. From this information, a preliminary 3D model has been derived. The parameters of this model are given at grid points with a regular spacing in X and Y of 20 km. The grid extends from the Alpine area to the Bohemian Massif, the Carpathians and the Pannonian basin. The thickness of sediments above the crystalline basement was calculated by a 3D delay time method. The P-wave velocity structure of the crust was obtained by automatic 1D tomographic inversions using CMP-sorted data within a predefined search radius around the grid points. The calculation of Moho-depths and Pn-velocities again was based on the delay time method. PmP arrivals supply additional constraints on the P-wave velocities of the lower crust and Moho-depths. The suitability of the starting model was checked by dynamic 3D ray tracing. Furthermore, 2D-sections following the lines CEL07 and CEL10 through the 3D model were compared with the results of 2D tomographic inversions and 2D modelling by ray tracing. These results were promising, and substantial extension of the model will be possible by the integration of the new data set which was acquired during the ALP 2002 experiment.

Project Head Ewald Brückl:
ALP 2002 - Ein seismisches 3D-Modell der Ostalpen