Memorial

It is with great sadness that I report the passing of Clyde A. Ringstad in December 2016. Clyde was a member of SEG and AEG. He graduated from the University of Washington and did postgraduate studies at Portland State University. Clyde started his career as a geologist with the Washington State Highway Department. He began working in engineering geophysics in Shannon and Wilson Inc.'s Seattle office. He left Shannon and Wilson with other members of the geophysics group to form Geo-Recon International in 1979. In 1996, Clyde left Geo-Recon and formed Apollo Geophysics with his son, Matthew. He worked with Apollo until retiring in 1998, continuing consulting with Apollo until 2010. Clyde taught several geophysics classes at Colorado School of Mines in the 1970s, and following his retirement, he worked with Tulane University teaching online classes in electrical resistivity.