-5PM ~ Nelson and Ash took surface soil samples, coconut fronds and y readings
along coconut rows 24 and 34 from the center base line to the 2nd base line south.
. Samples were taken at every 15th coconut tree, starting with the tree south of the
center base line or lst BLS.
follows:
#1.
#2.
#3.
#4.
These samples were composited for four areas as
Center base line to lst BLS - Row 24.
1st BLS to 2nd BLS - Row 24
Center BL to lst BLS - Row 34
1st BLS to 2nd BLS ~ Row 34
©
°
The row numbers are the numbers given to the original rows of coconut trees
and are those used in reports of the 1969-70 and 1972 surveys. A row of coconut
trees has since been planted between the original rows of trees.
Nelson and Ash began a gamma survey of the houses.
12 April (Friday) - Bikini Island
AM ~ Ash continued gamma survey of houses.
Nelson had a backhoe operator dig three soil pits in the following areas:
#1.
Ten yards south of the center base line and 30 yards inland from the
first house south of the center base line.
This pit is about 8 feet
from a Pandanus tree from which fruit and leaves were collected.
This
pit had a mixture of dark organic soil and coral gravel to a depth of
about 100 cm, and coral sand below 100 cm.
#2.
Ten yards south of the center base line on Row 24.
This pit had a
#3.
Five yards north of Ist Base line south on Row 24.
This pit had fine
mixture of black organic soil and coral gravel from 0-30 cm, black
organic soil and coral sand from 30-75 cm, and coral sand below 75 cm.
dark organic soil from 0-35 cm, light gray coral sand from 35-50 cm,
lighter shade of coral sand from 50-75 em and whife coral sand below
about 75 cm.
Soil samples were taken by side wall sampling from these three soil pits
at the folloving intervals, in cm, 0-2.5, 2.5-5, 5-19, 10-15, 15-25, 25~35, 35-59,
50-75, 75-100, 100+. These intervals varied in some cases, cue to differences
in soil horizons between the pits.
L.] Bumker
Redwing TB sort Ait #2
Fad
Row 3Y
XXX XK KM KK RK KK KK 5
Pandan us
Slesoe/ Pit 7
Chhrouse
ajeonRoad
1>* Base Line South
% XX KK XIXK KXKK KKM
-—— Soil
on oN xx BT
~_—~
pt
’
3