This data set was acquired with the LDEO Multi-Channel Seismic system during R/V Marcus G. Langseth expedition MGL1112 conducted in 2011 (Chief Scientist: Dr. Bernard Coakley). These data files are of U.K.O.O.A. P1/90 format and include Seismic Navigation data and were processed after data collection. Data were acquired as part of the project(s): Plate Boundaries around the Chukchi Borderland, and funding was provided by NSF grant(s): ARC09-09568.