ovciconr) MM et? _ Project 6.3 ~ "ffects of Atomic Fxplosions on the Tonosphere - M,. Hawn OBITATIVE The objective of Project 6.3 is to obtain data on the effects of high yield nuclear explosions on the Ionosphere, Principally, to in- vestigate the area of absorption, probably due to the high altitude radioactive particles, ani to study the effect of orientation relative to the earth's magnetic field on F2 layer effects, INSTRUMENTATION The system comprises: Two Tonosphere recorders, type C-2, operating on pulse transmission, installed in 6 ton trailer vans, one located at Ronzerik MoE and one located at Kusaie in the Caroline Islands. Qne Ionosphere recorder, type C~3, operating on pulse transmission, installed in a C-97 plane based at Fniwetok Island. . RESULTS All stations operated successfully during this test. Ground re- cords were taken by the C-97 as it was grounded at Kwajalein while a new engine was being installed. There were no noticeable effects on the ionosphere from this test. coPiep/ GDOE LANL BY Lo \ -17- \

Select target paragraph3