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(semtnozz)
DELETED.
Project 1.8 - Crater Measurements - F. FE. Deeds
OBJECTIVE
The objective of this project is to obtain measurements 0:
the physical characteristics (radius, depth and average profil
of the crater produced by the detonation of atomic weapons at
the surface of the ground.
INSTRUMENTATION OR TECHNIQUES
Preshot Survey:
Rays extending from ground zero and 60 4
apart were surveyed to a distance greater than any expected cer
radius,
The elevations ranged from 2 to 11 feet above the dat
plane (6 inches below mean low water springs) with the greater
of them being about 7 feet.
Uncontrollei stereoptic aerial pho
were taken of the shot area.
Postshot Survey:
Aerial photographs were taken in order -
the diameter of the crater could be measured by the use of ste
equipment,
At H #1 one pass was made at an altitude of 1350 feet.
of a malfunction of the camera no further runs were made that
D ¥ 1 three other passes were made at altitudes of 1495, 1475,
feet.
A requirement for making lead line soundings along thre
(with a minimum of ten soundings each) has been placed with Ho
Narver.
RESULTS
The postshot aerial photographs were studied and it was f
the crater was not symmetrical.
COPIED/DOE
LANL RC
It had vented in a Northern d