On April 15 2020 Shotaro Nakayama defended his PhD thesis entitled ‘Optimization of Blending and Spatial Sampling in Seismic Acquisition Design’ in front of the doctoral committee. His promotors were Dr. Gerrit Blacquière and prof. Kees Wapenaar. In this special time of the Covid-19 pandemic, the meeting was held via Skype. Shotaro did very well and received the honorable ‘cum laude’ designation.  This is a high distinction, which is only awarded to the top 5% of the graduates. We congratulate Shotaro with his achievement. We are proud to add his name to the list of Delphi alumni that also received ‘cum laude’:

•Kees Wapenaar, 1986, Pre-stack migration in two and three dimensions
•Adri Duijndam, 1987, Detailed Baysian inversion of seismic data
•Gert-Jan Lörtzer, 1990, An integrated approach to lithological inversion
•Eric Verschuur, 1991, Surface-related multiple elimination, an inversion approach
•Frederic Verhelst, 2000, Integration of seismic data with well-log data
•Arno Volker, 2002, Assessment of 3-D seismic acquisition geometries by focal beam analysis
•Barbara Cox, 2004, Tomographic inversion of focusing operators
•Edith Miller - van Veldhuizen, 2006, Integrated approach to 3-D seismic acquisition geometry analysis
•Mustafa Al-Ali, 2007, Land seismic data acquisition and preprocessing - an operator solution to the near-surface problem
•Shotaro Nakayama, 2020, Optimization of Blending and Spatial Sampling in Seismic Acquisition Design