.
232
Glossary
continental slope, This leads in turn to the more variable continental
rise and, beyond, the abyssal plains of the deep ocean oor—see page 14
%
CONTINENTAL SLOPE—see continental shelf
»
CORIOLIS FORCE: product of the Earth’s rotation. It deects moving
,.
particles to the right in the northern hemisphere and to the left in the
southern hemisphere. Together with the prevailing winds and the sun,
…
it is largely responsible for the pattern of oceanic circulation—see
"
page 148
DECCA: British navigational system which provides position by comparing
continuous synchronized signals from two xed transmitters
DECOMPRESSION : systematic reduction of pressure during a diver’s
ascent. It is generally carried out by making stops according to a
predetermined schedule. Decompressîon sickness or bends occurs
when the (liver ascends too quickly because the rapid release of the
pressure allows gases dissolved in the body uids and tissues to form
bubbles before teaching the lungs. The only Satisfactory remedy for
deCompression sickness is to recotnpress the diver, otherwise bubbles
formed in vital tissues will prove fatal—see page 160
"
'
DECOMPRESSION SICKNESS—see decompression
DEEP SCATTERING LAYER—see phantom bottom
_
DELŒRSAL FISH: bottom—living sh
opposed ”to surface+‘living or
33
Â.
DI'À'ÉOM: microscopic algàe
ashell (frustulè) composed of
‘
Apart from being important members of the plnnktozt, _depœits
their
shells form vast quantiües of ooze On
oor—see pages
_
28andrr4
_
_
..
,;
DIVINGMIXTUIŒ—See $atnmtion dining
_
ELECTRODIALYSlS:, uses
membranes
salt
from sea water. The driving force is electricitÿï—s'ee page 81 …
_
FATHÇ3M:
depth {equivalent to sixg,feet or: 1383 metres): “
FETCH: cdntiñüôus area of
over which the, wind blows
rupted in the same direction. It is an important factor in the :generatiOn
of the ocean swell
'
‘
Fon…mmmh:
animal with a chalk« shell
the
may-accurulate in
on the
sea:oor—seepage 114;
:;
«1—3
:
.
Fmzxno
(DesmNron); take advantagepr the-faÇt-that
…
watë‘r iCe forms leaving thersaltainsolution.
«
…
;;water is
secondary refrigetant