Byron Boville, 51, 6 June 2006; Atmospheric Sciences, 1991 David Cummings, 87, 5 September 2006; retired member, Tectonophysics, 1963 Andrew Godfrey, 66, 18 August 2006; Hydrology, 1995 Henry M. Morris, 87, 26 February 2006; Hydrology, 1948 Fred N. Spiess, 86, 8 September 2006; Life Fellow, Marine Geology and Geophysics, 1957 Recent Ph.D. Jeremy Shannon, Geology, Michigan Technological University, April 2006. "Development and application of new techniques for sulfur dioxide monitoring at active volcanoes." Advisorc Gregg Bluth. Honors Mark D. Zoback of Stanford University received the Emil Wiechert Medal in March 2006 from the German Geophysical Society. Zoback was honored for his original and essential scientific contributions to the investigation of the distribution of tectonic stresses on the globe and at depth, which are fundamental for the understanding of the tectonic processes in the lithosphere.