ABSTRACT
a ‘Photographic observation and fathometer measurements of CASTLE
Shots 1, 3, and 4 were made to assist in the prediction of craters
produced by megaton weapons.
The.more important numerical data are as follows:
Yield
Location
Crater
Radius
Estimated
Max.Depth
(ft)
(ft)
1 (fabs ME
no x
Surface-reef
Surface-island
3000
400
2ho
15
4
Surface-water
(160 ft water
depth)
1500
250
6.5 MI _ |
1
Be
RG
The Shot 1 crater could‘have been predicted satisfactorily from
the IVY Mike Shot. Shot 3 grater was smaller than predicted on that
pasis. Both craters were largerChan predictions based on simple scaling of the JANGLE surface shot,’(even if some allowance is made for the
difference in soils.
fhe Shot 4 crater, producedbye shot on the surface of water having
a scaled depth 4, = 0.05, was detectable but relatively small. A tunm breached but no hazard to
nel underneath it would probably have |
navigation was produced.
An extrapolation procedure based ba smaller TNT explosions permits
the prediction of the radius of the crater produced by a nuclear explosion under a wide range of circumstances. mer range of uncertainty is
believed to be larger than a factor of two. |