Abstract: Analysis has been made of seven spring and summer convective showers collected at State College, Pa. The data indicate that the ground-level Sr90 concentration in the precipitation is dependent upon the extent of the ...

Abstract: Collections of nuclear debris in dry and precipitation fallout samples were made during the winter 1961?2 at Palo Alto and Santa Barbara, Calif., following resumption of nuclear testing by the USSR. The samples were ...

Abstract: Analysis has been made of three winter rainstorms, resulting from large-scale uplift, in which the generating level and the precipitation mechanism were essentially constant. The data show that the ground-level Sr90 ...