2.8 ProjectMumber: Sponsor: 1.4 AFSWP Project Cfficer: Title: Underwater Fressure vs Time Performing Agency: Dr. William Thaler OUP, NOL, NRL, DTMB _To.d termine for a surface burst the amount of blast energy Instrument stations will be anchored in the lagoon at various distances from ground zero, Wine close~in stations will each heve 68 ball crusher gages in groups of four spaced vertically from the water surface to the bottom of the lagoon. The stations located beyond approximately 10,000 ft from ground zero will contain from two to eight pressure~time gagesisuspended at different depths in the water, Twelve stations of pressure-timegages are planned. 2.8.3 Remarks The actial spatial ‘distribution of stations will be determined at a later date from the résults of high explosive experiments. Project 1.4 will participate in‘Shots Union, Echo and Nectar. In addition, a few stations may \beActivated for Shots Bravo and Yankee. 2.9 ProjectMmber: Sponsor 1.5 USN (Q4 ooae: we Acoustic Pressure Signals in Water (SOFAR) ~‘esfprning Agency: Office of Naval Research Officer: Project Me. J. W. Smithy 2.9.1 Ohjective To determine the relative intensity af the long range acoustic signals produced by surface bursts. An effort wit} be mede to determine device yields relative to the GREENHOUSE and IVY shots, acoustic veloc- ity, shot location and/or time. 2.9.2 Procedure The USN Electronics Laboratory will be requested:to continue observation and analysis of data at Pacific SOFAR stations.Similarly, groups from Columbia University will undertake observations! SOFAR Research Station. 2.9.3 Remarks This project will be conducted off site and will participate in all shots. 23