Seismic structure in the Eastern Alps from teleseismic receiver functions J. Kummerow, R. Kind (GFZ Potsdam) Email:joern@gfz-potsdam.de Between May 1998 and September 1999, 2 passive seismic experiments were carried out in the Eastern Alps. All in all 64 shortperiod and 3 broadband stations were deployed along a north-south striking line running parallel to the seismic reflection/refraction traverse (TRANSALP profile). The average station offset of 4-5 km permits high resolution teleseismic analysis. We investigate P to S converted waves from teleseismic events to determine the crustal and upper mantle seismic structure under the area of research. A stacked 2D section of deconvolved SV-components reveals energy converted from the southward dipping European Moho below the Molasse, the Northern Calcareous Alps and the Tauern Window. The European Moho can be traced to about 20 km south of the Pustertal Line. There, a first migration using a preliminary 1D velocity model suggests a maximum Moho depth of 55-60 km. Moho signals are less clear below the Dolomites. We identify a weak, but coherent signal in about 40 km depth as the Adriatic Moho. The receiver functions at time delays corresponding to subcrustal conversions also show converted energy. Interferences with crustal multiples, however, make the analysis of the uppermost mantle more difficult.