PA

Poorva AgrawalAIR 65· 2024

Question Q.16Describe the various factors and discuss their multi-dimensional impactGS1GS1

Describe the various factors that influence ocean currents and discuss their multi-dimensional impact.

Open scan (p.37)

Introduction

Ocean currents are moving water bodies that flow for a definite direction in enclosed oceans.

15 words

Main Body

(A) major factors:

1Coriolis force - affects direction
2Coriolis effect - direct [illegible]
3Wind provides energy & cost current

Multi-dimensional impact of ocean currents:

(A) Climate impact:

1.i) Warm current on east tropical continents margin causes [illegible] - Hurricanes in East Mexico.

1.ii) [Cold current] in east temperate continents margin causes severe monsoon conditions.

1.iii) [Warm current] in west temperate area resists maritime climate - Britain, Germany.

(B) Fishing industry - supported in areas of mixing of warm & cold currents.

(C) Navigation - ships save fuel by traveling in direction of currents.

These ocean currents are major geographical features that effect all dimension of human life.

Factors that influence ocean currents:

Primary factors:

1Insolation - causes heating of expansion of spherical water

Secondary factors:

1Salinity - affects density & equally or dampening
2Topography - creates current bands north due to south American [illegible]
3Peruvian current bands north due to cold current

Multi-dimensional impact of ocean currents:

(A) Climate impact

1.i) Warm current on east tropical continents margin causes [illegible] - Hurricanes in East Mexico.

1.ii) [Recces] formed on west margin due to cold currents.

1.iii) Malama due to Peruvian current

(B) Fishing industry - supported in areas of mixing of warm & cold currents.

(C) Navigation - ships save fuel by traveling in direction of currents.

Difference between tides and waves:

BASIS | TIDE | WAVE

1Definition | Periodic rise & fall in ocean water | Movement of water in circular form in no ocean
2Direction | Water moves in vertical plane | Water names in horizontal plane
3Forces | 1. Gravity of dew 2. Gravity of moon 3. Centrifugal force of earth | 1. Wind pushes water forward. 2. Gravity pulls in down
4Period/ity | Fixed time of rise & by of stole - by formation may not be fixed | More predictable due to sincerely. Less predictable due to sincerely
5Ages alone | (H-S) - upsand & downward movement | (NO) - waves just circulate - actually energy-only
4Impact | Tidal floods - tidal bore, tidal bore | Enable ships in navigation - use asarge can cause floods on coast

Thus, tides for tides - different purpose & differing impacts.

376 words21 paragraphs

Diagram

Multi-dimensional impact of ocean currents - labeled diagram showing climate impact, fishing industry, and navigation factors

  • Clear categorization of factors affecting ocean currents
  • Multi-dimensional approach covering climate, fishing, and navigation
  • Specific geographic examples provided (East Mexico, Britain, Germany)

Topper

Poorva Agrawal

AIR 652024

Subject & Paper

GS1GS1

Topic

Salient features of World's Physical Geography

Ocean Currents and their Impact

Writing Stats

391

Total words

21

Paragraphs

Analytical and structured

Tone