CHAPTER II, SECTION 1
including Stations Chuck and Gobels. A side
equation adjustment was applied to the survey,
and the relationship was obtained between these
values of the stations and the values determined
by the method of least squares. The discrepancy
in coordinate values at Station Chuck was 0.56
locai control networks were installed, and elevations were determined for each control point.
A closed level circuit was completed from How
to Nan at Bikini Atoll. The difference in datum
planes as indicated by the circuit was 0.07 feet.
foot in northings and 0.72 in eastings and at
Scientific Station Location
between Stations Gobels and N. How was determined as onepart in 40,000.
The majority of the Scientific Stations
were located from the local control lines. Two of
the four Ground Zero points were tied directly
Station Gobels 0.10 foot in northings and 1.12
feet in eastings. The discrepancy in distances
Vertical Control
Prior to the next Operation, it will be neces-
sary to obtain sufficient tide gauge recordings
at each potential site over a period of time to
establish time and height factors. A request for
comparison of actual with predicted tides at
to triangulation monuments, and the third
Ground Zero point on Sugar, later changed to
Yvonne, was located by use of the local control
system.
The Scientific Stations related to the missile
tests were located from a control system similar
to those used for ground tests. Computations
Janet and Yvonne was received, after the two
of horizontal and vertical angles to the burst
provided with a float, was installed on the
personnel pier at each site. The tide level was
recorded at intervals, and graphs were prepared
showing the actual and predicted curves. Level
circuits were run on each of the islands on which
Topographic Mapping
tide gauges at Jobsite were in use at Bikini; a
4-inch pipe, perforated on the lower portion and
points were made by Home Office Engineering.
Topographic mapping surveys were completed and drawings prepared on the following
sites: Gene and Ursula Complexes, Glenn, Henry,
ag Set:
*=
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oa
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,
NSS 2 fia
(Neg. No. W-V-236-1)
Figure No. 2-18.
Page 60
Survey Station Point “A” — Tare.