264 Health Physics 78.0°E qa7 5 q “““CskBgm™~ 51.4°N--| Mf >260 HB HB BB i 19.8 to 26.0 13.5 to 19.8 7.3t0 13.5 1.0to7.3 August 2010, Volume 99, Number 2 79.5° E zy 81.0° E Site A ....._.... _lAAR é Yamamoto HYSPLIT 12.2to15.5 io 43to 11.3 : 1.0 = | 51.4°N <1.0 51.0°N 50.6° N 51.0°N ------------ gl 22ers cageenentcsccececeeceeecesecesesciseesee Site on one 137C5 kBq m= A LJ) 3280. 1... ele B = 21.3 to 28.0 c BB 14.510 21.3 HB 7.8to 14.5 Ml 1.0to7.8 <1.0 Yamamoto HYSPLIT ~47 oS 4.3 to 11.3 12.2 to 15.5 2.5 16 || ° nen 51.0°N Peeve eeeee rere! 51.0°N 50.6°N Fe 50.6° N ia7 T 7 : Cs kBg m | |MP>230 51.4°N 7 ae T Site A |... B G Yamamoto 4.3 to 11.3 12.2 to 15.5 AL? q HYSPLIT 1.0 os 03 |_ 51.4°N HB 12.0to 17.5 HB 6.5to 12.0 HB 1.0t065 <1.0 51.0°N 51.0°N 50.6° N 50.6° N i 78.0°E 79.5°E 81.0°E Fig. 4. HYSPLIT predictions of '°’Cs deposition pattern near the Semipalatinsk Test Site in Kazakhstan following event 1 (29 August 1949) using: MIparticle-size distribution (Top Panel), alternate particle-size distribution #1 (Center Panel), and alternate particle-size distribution #2 (Bottom Panel), all described in Table 1. The key in each panel compares simulation results and measurements reported by Yamamotoet al. (2008). Yamamotoet al. (2008) sampling locations. Location D is the grid cell with the highest HYSPLIT-predicted deposition density at ~118 km downwind.Sites A and C are the respective northern and southern-mostsites listed in the Yamamoto et al. (2008) study. The predicted fallout arrival time at Dolon is reasonably consistent with that reported by Gordeevet al. (2002) and Yamamoto et al. (2008) at approximately 2 to 3 h, but the spatial distribution of '°’Cs is much wider thanthat inferred by the measurements of Yamamoto et al. (2008), and the