'J ,-> .. OCEANOGRAPHY DECEMBERdpo.cusat.ac.in/download_center/Previous_Question... · OCEANOGRAPHY...

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f,-> ~ 'J OG.03 03.4 ,-> .. M. Sc. DEGREE ill SEMESTER EXAMINATION IN OCEANOGRAPHY DECEMBER 2003 Time: 3 Hours OCE 2303 COASTAL AND ESTUARINEOCEANOGRAPHY Maximum Marks: 50 SECTION-A. (Answer ALL questions) (All questions carry EQUAL marks) L Choose the most appropriate answer:- 1. (5 x 1= 5) An estuary is said to be cubeline, when the salt content is - 2. (a) (b) (c) (d) 0.5% 30010 5 -18% 18-30% The important parameters determining the velocity oflongshore current are beach slope, breaker height and - . (a) (b) (c) (d) Coriolis force. angle between the breakers and the shoreline. mean grain size of the beach sediments. wave length. 3. Huge quantities of beach material are transported away from the coast by - (a) (b) (c) (d) rip current. back wash. beach drift. swash. (Tur.. (}uor}

Transcript of 'J ,-> .. OCEANOGRAPHY DECEMBERdpo.cusat.ac.in/download_center/Previous_Question... · OCEANOGRAPHY...

Page 1: 'J ,-> .. OCEANOGRAPHY DECEMBERdpo.cusat.ac.in/download_center/Previous_Question... · OCEANOGRAPHY DECEMBER 2003 Time: 3 Hours OCE 2303 COASTAL AND ESTUARINE OCEANOGRAPHY Maximum

f,-> ~'J

OG.0303.4

,-> .. M. Sc. DEGREE ill SEMESTER EXAMINATION INOCEANOGRAPHYDECEMBER 2003

Time: 3 Hours

OCE 2303 COASTAL ANDESTUARINEOCEANOGRAPHY

Maximum Marks: 50

SECTION-A.(Answer ALL questions)

(All questions carry EQUAL marks)

L Choose the most appropriate answer:-

1.

(5 x 1= 5)

An estuary is said to be cubeline, when the salt content is -

2.

(a)(b)(c)(d)

0.5%300105 -18%18-30%

The important parameters determining the velocity oflongshorecurrent are beach slope, breaker height and -

. (a)(b)(c)(d)

Coriolis force.angle between the breakers and the shoreline.mean grain size of the beach sediments.wave length.

3. Huge quantities of beach material are transported away fromthe coast by -

(a)(b)(c)(d)

rip current.back wash.beach drift.swash.

(Tur.. (}uor}

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4.

2\...

The number that compares the relative importance of inertial andviscous force determining the resistance of the flow-

(a)(b)(c)(d)

5.

Froude number.Reynold's number.Richardson number.Avagadro's number.

The mixing between the top layer and bottom layer in a stratifiedestuary is due to -

Fill in the blanks

(a)(b)(c)(d)

entrianment.

simple mixing.fiiction.molecular diffusion.

(5xl =5)

6. The wave induced current which flows seaward perpendicular to thecoast is called "........

7. IndianEEZ limit is nautical miles.

8. Swell waves generally cause ofthe beach.

9. Tides and river flow are two forces in an estuary.

10. The geologic pcriod characterised by widespread glacial activity andintervening warm episodes "

Contd 3

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'-./

II.

ill.

]V

v

VI.

VIi

VIIl

IX.

x. A.

3

SECTION - B

(Answer ANY SIX questions in about 300 WORDS each)(All questions carry EQUAL marks)

(6x4 = 24)

Write a note on stratification in estuaries.

What are rip currents? How they are formed?

What do you understand by EEZ? How is it important to a country likeIndia?

Write a short note on the concept of Coastal Zone Management inrelation to industrialization.

What are the different types of breakers? What happens to the energyof a wave after breaking?

What is the significance of salt balance in the study of estuaries?

Write a note on sea level changes.

Write a note on mud banks of Kerala coast.

SECTION-C

(Answer ALL questions in about 1200 WORDS each)(All questions carry EQUAL marks)

(2x8= 16)

Discuss the various physical and chemical processes influencingthe dispersal of pollutant in estuaries and coastal waters.

OR

Contd 4

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X. B.

XI. A.

XI. B.

4'-./.

Write an essay on estuarine zones and their environmental significances.

Discuss the different wave transformation processes. Explain withappropriate diagrams.

ORWhat are the factors influencing sediment movement in the Gulf zone?Describe the different methods of computation of long shore transportrate.

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