Identifying the factors responsible for formation of tides, discuss their geographical and economic significance.

Tides are type of natural coastal phenomena that cause a regular surge and dip in ocean water levels on coasts.

Types of tides:

• Based on diurnal frequency – Diurnal, semi diurnal and mixed.
• Based on time interval – spring tide and neap tide.

Factors responsible:

• Position and gravitation of moon.
• Position and gravitation of sun.
• Centrifugal force on earth.
• Inertial force of water mass.

Geographic significance:

• Indicate a storm surge.
• Aid in determining celestial body orientations.
• Renew coastal waters and nutrients.

Economic importance:

• Bring distant fish for fishermen.
• Helps in tapping tidal energy.
• Aid desalination plants and coastal tourism.

Thus, tides have a multifarious significance.

Topics: GS-I: Important Geophysical Phenomena