aE ME 20:1) Project 1.9 = Water Wave Stuiles - Ly W. Kidd OBJECTIVE tudies of water wave action fpenerated by the detonation of large yield (greater than1MT) nuclear deviccs are made at relatively close ranges and at several distant islanis by Project 1.9, © oy on . INSTDUMENT ATION TAN D LA TP A oe ~ The instrumentation or wee essentially the (CHPROKET), with the exceptien that higher iseal wave antiok in the Pikini arca was expectcd, and a more oxtensive instrumentation effort was made in this areca. Of the local instrumentation, five shere recording Mark VITT wave units (sone at Pniwetok) and ene skiff station in Pikini Legoon gave usefl fate. PST Prefect 1.1 mete a number of inunjaticn measurements, tet the re- Station Ailinginee Eniwetok wake Johnston Approximate Range (mi) 4o 209 509 largest Wave Yetsrt (em) Pericd (sec) Recora not yet available b.2 359 5 350 1500 No, of Vaves 5 5-7 Undetectable atove high backercound ~~ The very long rerioi TSrggrlituie waves were again observed on the Eniwetck record, ee Microbarorraphice records were obtained on wWeke, _— ,

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