Institution: | U.S. Geological Survey, MS 967, Box 25046, Denver Federal Center, Denver, Colorado 80225, USA;CIRES, University of Colorado/NOAA, Boulder, Colorado 80309, USA;Seismological Central Observatory, 8520 Erlangen, F. R. Germany;Geophysical Institute, University of Karlsruhe, 7500 Karlsruhe, F. R. Germany (Contribution No. 161);Lamont-Doherty Geological Observatory of Columbia University, Palisades, New York, USA |