I
PHYSICAL
DESCRIPTION
OF
EN EWETAK
ATOLL
GEOGRAPHY
The
atall
consists
of 40 islandson
nautical
miles,
with
is 2.75
square
miles,
sea
the
long
with
an elliptically
axis
the
running
northwest
height
generally
land
The vicinity
Map shows
level.
shaped
the
atoll
reef
approximately
23 by17
The
land area
to southeast.
averaging
total
6 to 8 feet
above
mean
configuration.
CLIMATOLOGY
Enewetak’s
94°
climate
is the
F and humidity
moderate
variable
tradewinds
tropical
marine
tYPe,
in the 73 to 80 percent
rainfall
(57
inches
mean
with
temperatures
range.
There
annual
rainfall)
ranging
is much cumulus
and
from 710
cloud
frequent
to
cover,
northeasterly
of 10 to 30 knots.
GEOLOGY
Enewetak
volcano
Atoll
which
forms
Steep coralline
islands,
born
which
subside
slowly
when
shallow,
below
clear,
with
side.
the volcano
and
then
the
feet
island
is a shal
example
the ocean
warm,
above
base
the
is
ocean
ow lagoon
continues
with
As
marine
the fringe
oval
a maximum
concept
the
feet
ring
depth
of atoll
by a fringing
the coral
waters)
of reef
to subside,
while
4,200
a flat
surrounded
surface.
oxygenated
the subsidence,
form
of the Darwinian
volcano,
floor,
approximately
to the surfoce
an oceanic
mensurate
As
15,000
reaching
is a classic
atol I is
quire
reefs
within
Enewetak
rises
below
the
surface.
of reef and low-lying
of about
formation
coral
200
feet.
in which
reef,
begins
an
to
and
coralline
algae (which re..
maintain
an upward growth com-
flourishes,
the fringe
top of the eroded
reef
particularly
gives
way
on the ocean
to a barrier
ree4,
. . . .... . . .. . “
e.
to an atol
-2-
-, . . .. . . .... . . .. ._—... .... .. .. . . ... ,, .”- -.. _..r- --——- . - —----.-,---.--, - --%-. . .. —----------------. ...---r—.
—-,-7-.