IGNOU MED 1 2026 - Distinguish between positive and negative estuary.

Question

Distinguish between positive and negative estuary.

12 Feb 2026

Answer :

Word Count : 263

An estuary is a semi-enclosed coastal water body where freshwater from rivers mixes with saline seawater, creating a gradient of salinity and unique ecological conditions. On the basis of salinity distribution and freshwater inflow, estuaries are commonly classified as positive and negative estuaries. A positive estuary, also known as a normal estuary, occurs where the input of freshwater from rivers and rainfall exceeds the loss of water through evaporation. As a result, salinity is lower near the river mouth

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