NQ - \ an we i: BLACKFOOT ) “~Y Project 1.9 - Water Wave Stuiies - L, W, Kida OBJECTIURS AND INSTCM"NTAT ION Studieca of water wave action cenerate? by the detonation of large rist3 ruinlearAevi-esaremaia at relatively close _ ranges and at sewerel distant jeland stations by Project 1.9. Four shore recording wave measuring stations (of the Mark VIII type) were active in Bikini Lagoon teMBM cet). In adiition, Project 1.9 constructed and installed four new type long period wave recoriers on Eniwetok, Ailinginae, Wake, and Jolmston Islanda, These recoriers are designe? to document long period, low amplitude deep ocean waves of the tsunami type. The recoriers operate continuously but only receive significant signals from the large shots at Bikini. In ade dition to the above instrumentation, a tide gage was active at Aflinglnoae Atoll, and Santia Corporation eicrotmrographic stations were operate’ by Project 1.9 at Wake and Johnston, RESULZS The water wave stations were operating for this shot, but signifieant wave action vas not obeervel, BEST AVAILABLE COPY 3B