PROJECT EARLY RISE - SHOT TIMES AND LOCATIONS

Shot locations for the Project Early Rise explosions fired in Lake Superior in July 1966 were calculated from the travel times of water waves recorded by six hydrophone stations in Michigan and Minnesota. As a check on the stability of the calculated locations, the locations and velocities were computed by successive elimination of each of the hydrophone stations. The result, together with the size of the standard deviations of the latitude and longitude, time residuals, and the consistency of velocity, suggests that the locations are sufficiently accurate for almost any conceivable seismic application. Copyright 1969 by the American Geophysical Union.