~2
4.
Salinity of seawater is found based on
(a)
(b)
(c)
(d)
5.
-
chloride in seawater.
.
total hydrogen content in seawater.
total salt content m,seawater.
None oft4e above.
Sea Surface Temperature is measured using spacebome sensors on
the principle of
-
(a)
(b)
(c)
(d)
6.
Approximate height ora goo stationery satellite is
(a)
(b)
(c)
(d)
7.
lOOKm.
iOOOKm.
12000Km.
36000Km.
-
surface currents.
interm~diatedepth currents.
'
currents at any depth.
bottom currents.
Water currents in Cochin Backwaters is"caused by
(a)
(b)
(c)
(d)
to SST.
-
Acoustic ])oppler Current Meter is used for measuring
(a)
(b)
(c)
(d)
8.
scattering of e!ectromag)1etic ragiation.
reflectivity ofsolarradiatioItproportional
e!llissivity of as a factor ofSST.
None of tqe above.
-
tidal variations.
fresh water from"rivers.
both.
NOI!:eof the above.
Contd
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=
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r:"
,"
'2
4.
Saliqit'Y of seawater is found based on,III
(a)
(b)
(c)
(d)
5.
chloride in seawater.
total hydrogen conteqtjn seawater.
total salt contentj1} seawater.
None of the above.
~ea Surface Temperafure is we,gsured ~ipg spacebome sensors on
thepriqcwko~
."
(a)
(b)
(c)
(d)
.
§cattering of elecq:oplagpetic tadiatio,p;
reflectivity of solar radiation proportional, to S81'.
emissiyity ofias a\fagtot o~SS;F..
Ngne ofthe above.
~
I'
6.
ApproJQmate heig\li'of a geo stationery satellite is
(a)
(b)
(c)
(d)
7.
l00~
.lOOO;Kln.
J.2000~
36000.Km.
Acoustic pOPRler Currellt Me.ter is used formeasm;ip.g -
(fl)
(b)
(c)
(d)
8.
-
surfa.ce. currents.
intelIDediatedepth currents.
'
currep~atlan.y d1llth.
bottom currents.
Water currents in Cochip Backwaters is caused by
(a)
(b)
(c)
(d)
-
tidal variatiolls.
"fresh wat~r from rivers.
both.
'None of the above.
COIltd
3
..
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I
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ill
'I
3
9.
Salinity measured directly from sea depths is based on
(a)
(b)
(c)
(d)
10.
refractive index of sea water.
titrationwe!f1od.
light transparel1cy of sea water.
cond!lct/yity of seawater.
Doppler effect is sued for meliSm;ement of
(a)
(b)
(c)
(d)
-
-
water salinity.
ocean wave§.
watertemperafure.
water current.
SECfION -.B
(Answer anv six questions in.about 300 words each)
(All questions carry eq.uaLmarks)
(6x4=24)
Il
Compm;e the Eulerian and Lagrangian methods of water cprrent
measurements.
"
ill.
Give an account of the facilities 4I modem research vessels.
Iv.
Ex,:pl!J.inthemethods us~d for SSf mapping. Bpetly mention its l.imitations for resoUrce forecasting.
v.
Give an account of the principle!; and techniques used for waye
measurements in open sea.
VI.
Compare the benefits of indicating the recording type instruments in
for underw!!,termeasurements in oceanography.
VII.
Explain the uses of vertical and horiz;ontal vanes of currentmete!;s.'
Contd
4
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-.
=
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4
VIII. Describe how"the depth of operation of
instruments/water samplers,
engaged in data collection un.der water, are obtained during oceano
graphicinvestigations.
IX.
~
~ompare the classical and modern methods of navigational instfuments.
SECfION-C
(Answer all questions in about 1200 words each)
(All questions carry equal marks)
(2x 8=16)
X. A.
Explain the principles and working featur~ of tide gauges and explain
.
how tides are predicted.
x.B.
OR
Describe the principles and use~ of modern electronic navigation
systems.
XI. A. . Give an account of different water samplers and the oceanographic
data acquired using !:bern.
OR
XI. B. Give an account of the scope of air crafts and satellites for data
collection and their operational limitations.
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