Bay of Bengal Currents: Seasonal Dynamics

Coastal currents in the Bay of Bengal are characterized by significant seasonal variations, primarily influenced by the monsoon wind systems.

Monsoon Wind Influence

• Southwest Monsoon (Summer): During this period, winds predominantly blow from the southwest towards the northeast. This drives coastal currents generally in a similar direction, flowing northeastward along the coast.
• Northeast Monsoon (Winter): As the monsoon shifts, winds blow from the northeast towards the southwest. This change causes a reversal in the primary direction of the coastal currents, which then tend to flow southwestward.

Current Intensity and Eddies

• The statement notes that currents are intense during non-monsoon seasons. This likely refers to periods of transition or specific established flows outside the peak monsoon phase, where complex dynamics can lead to higher energy levels in the currents.
• These seasonally reversing and dynamic currents are often accompanied by eddies, which are localized, circular currents or swirls within the larger flow. The presence of eddies indicates the complex nature of water movement in the region.

Evaluation of Options

• Option 1 is incorrect because these currents can be strong, not consistently weak.
• Option 2 is incorrect; currents are certainly generated and are a significant feature.
• Option 3 accurately describes the key features: seasonal flow reversal linked to monsoons, intensity during specific periods (non-monsoon seasons), and the presence of embedded eddies.
• Option 4 is incorrect as the most prominent feature is their significant seasonal variability.