Affiliation: | (1) Institute of Geophysics, Polish Academy of Sciences, Warsaw, Poland;(2) Institute of Geophysics, University of Warsaw, Poland;(3) Geophysical Institute, Acad. Sci. Czech Rep., Boní II/1401, 141 31 Prague 4, Czech Republic;(4) Technical University, Vienna, Austria;(5) Eötvös Loránd Geophysical Institute, Budapest, Hungary;(6) University of Texas at El Paso, USA;(7) University of Copenhagen, Denmark |