HR: 09:00h
AN: S21C-05    [PDF]
TI: Central European Lithospheric Experiment - CELEBRATION 2000: Summary of the Results
AU: * Grad, M
EM: mgrad@mimuw.edu.pl
AF: University of Warsaw, Institute of Geophysics Pasteura 7, Warsaw, PL-02-093 Poland
AU: Guterch, A
EM: adgip@igf.edu.pl
AF: Polish Academy of Sciences, Institute of Geophysics Janusza 64, Warsaw, PL-01-452 Poland
AU: Keller, G R
EM: keller@utep.edu
AF: University of Texas at El Paso, Department of Geological Sciences, El Paso, TX 79968 United States
AB: A large consortium of European and North American institutions - 28 in all - recently completed a huge active source seismic experiment focused on Central Europe. This experiment is called the Central European Lithospheric Experiment Based on Refraction or CELEBRATION 2000. It targeted the structure and evolution of the complex collage of major tectonic features in the Trans-European suture zone (TESZ) region, as well as the southwestern portion of the East European craton, the Carpathian Mountains, the Pannonian basin, and the Bohemian massif. The layout of the CELEBRATION 2000 experiment was a network of interlocking recording profiles whose total length was about 9000 km an for which the station spacing along the profiles was 2.8 or 5.6 km. Shots (147) were fired along most of the recording profiles, so that in addition to forming an array, about 5400 km of traditional profile data were obtained. The sources ranged in size from 15 metric tons to 90 kg, with the average being ~ 500 kg. Thanks to Canadian, European, and IRIS/PASSCAL resources, the total number of instruments deployed was 1230. CELEBRATION 2000 also targeted the lithospheric mantle, and our goal is to provide new information about structure below the Moho discontinuity. One particularly long profile extends from Russia across Belarus, Poland, Slovakia to Hungary (1430 km). The massive data set produced by this experiment is providing a 3-D picture of the crust and upper mantle that will help answer many of the key questions that remain about the structure and tectonic evolution of this very interesting region of the European continent. For example, the depth of the consolidated basement with velocity Vp$>6.0$ km/s changes from 1-3 km on the East European Craton to about 5-8 km beneath Pannonian basin, reaching up to 10-18 km in TESZ and Carpathians. The East European Craton has a typical thick, three-layer structure for the crystalline crust (with velocities of 6.1, 6.4, 6.5-6.6 and 6.8-6.9 km/s, respectively), while in the Carpathian-Pannonian area, thin crust is characterized by relatively low Vp velocities (6.1-6.4 km/s in the upper crust and 6.4-6.6 km/s in the lower crust). The velocity in the uppermost mantle is 8.1-8.25 km/s beneath East European Craton and 7.8-8.0 km/s beneath Carpathian-Pannonian area. CELEBRATION Working Group: K. Aric, S. Azevedo, I. Asudeh, A.A. Belinsky, T. Bodoky, E. Brueckl, W. Chwatal, R. Clowes, W. Czuba, T. Fancsik, E. Gaczynski, M. Grad, A. Guterch, Z. Hajnal, S. Harder, E. Hegedus, P. Hrubcova, T. Janik, G. Jentzsch, P. Joergensen, G. Kaip, G.R. Keller, F. Kohlbeck, K. Komminaho, S.L. Kostiuchenko, D. Kracke, K.C. Miller, A.F. Morozov, K. Posgay, O. Selvi, C. Snelson, A. Spicak, P. Sroda, E. Tacasc, H. Thybo, T. Tiira, J. Vozar, M. Wilde-Pi¢rko, J. Yliniemi
UR: http://paces.geo.utep.edu/research/celebration.shtml
DE: 7205 Continental crust (1242)
DE: 7218 Lithosphere and upper mantle
DE: 8110 Continental tectonics--general (0905)
SC: Seismology [S]
MN: 2003 Fall Meeting