oO OS oO b o @ o @ oO DEPTH OF CRATER SITE, FT 100 120 le 140 160 = 180 0 Fig. 3.4 300 600 900 1200 1500 1gu0 DISTANCE FR2'% GROUND ZERO, FT 2100 2400 2700 3000 Profiles of Ivy Mike Crater. The profiles are measured from Ground Zero. A hole 170 ft deep occurred about 350 ft from Ground Zero. One ray is plotted through the center of this hole; the three other rays at 90° spacing from this ray, ==:=, measured along rays 90° apart. , theoretical. 17