1 1 R R A\W,” = A,W,” and wa = w,F where W js the radiochemical yield expressed in pounds of TNT. Data included are from Stations 650.01, 650.02, and 650.03 only and represent maximaofthe initial refracted signal. Data | roT FE cP hE] L | 10,000 k= Bo Q °o °o Gx tes AWy'/? = 2.65 x 105 r_73 aAwV3 22:12 x 108 4,75! $ = < 2 2000 -— aw,'/3 = 4.4 x10" AAS —_ ° - < ,4 000 -— a — oO oO — — a — — <z oO ” 400 —d 200 -— _ q fad ad 2 4 6 8 10 SCALED GROUND RANGE, A, =R/w¥3 = FT/LeYS Fig. 1.6-——Ground-transmitted acceleration as a function of ground range. O, Ivy Mike shot. +, Greenhouse Easy shot. . from Station 603 are omitted for irrelevancy because they represent motion of a massive structure on a semielastic earth rather than soil particle motion. Low signal-to-noise ratio and uncertainty of the magnitude of early refracted signals led to omission of Station 650.06 data also. Corresponding information from Easy __ ‘Operation Greenhouse’ is included in the graph of Fig. 1.6. All three sets of data fit approximately: straight lines with negative slopes, These lines are parallel and may be represented by the equation Aw’ = Kan? (4) where A is peak acceleration in g units, W is the radiochemical yield in pounds of TNT, and AR is the scaled ground range in ft/lb”. The units of K are approximately g-ft?/lb%. The coefficient K has the following values: Mike shot 2.65 x 10° tsasy shot 1-1 x 10° 22