Skip to main content

Different Types of Tide

Tides are periodic, short-term changes in the height of the ocean surface at a particular place caused by a combination of the gravitation force of the moon & sun & the motion of the Earth.

  1. Sparing Tides:When the moon, sun & earth are located along the same line, then the attraction power of the moon & sun is intense. For this high tide is created, this types tide is called sparing tides.
Fig: Sparing Tide

  1. Neap Tides:When the sun & moon are at a 90° angle to the earth, then their rotation is reduced to earth. Because the moon & the sun do not draw the opposite direction, so the tidal velocity decreases. And its height is lower than the normal tide. That types tide known as neap tides.
    Fig: Neap Tide
  2. Tropical & Equatorial Tides:When the moon is perpendicular to the tropic of cancer, then the force of attraction is relatively high & created high tide. This tide occurs twice in a year. This types tide is known as tropical tides. Again, when the moon is perpendicular to the equator, then high tide occurs. In the equatorial region, two high & two low tides is occurs in a month. This type tide is known as equatorial tides.
  3. Apogee & Perigee Tides:When distance between the earth & the moon decreases, the attraction of the moon naturally increases. At this time the tidal height is 15-20% higher than the normal tidal height. This types tide is known as perigee tides. Again, when the distance between the earth & the moon increases, the attraction of the moon naturally decreases. At this time the tidal height is 15-20% lower than the normal tidal height. This types tide is known as apogee tides.
  4. Daily Tides:Daily tides is occurs 24 hours 52 minutes interval.
  5. Semidiurnal Tides:Semidiurnal tide occurs twice in a day. That’s means it occurs 12 hour interval in a day. 
  6. Equinoctial Spring Tides:Equinoctial spring Tides is occurs every six months interval due to the earth rotates the sun
  7. Monthly Tides:Monthly Tides is occurs due to rotation of earth & location of its Perihelion & Aphelion.
  8. Yearly Tides:Yearly Tides is occurs due to rotation of earth & location of its Perihelion & Aphelion.
  9. Mined Tides:Mined Tides is occurs due to combination of daily & semi-daily tides.
  10. Mixed Tides:Mixed Tides is located at the Indian ocean & some parts of the Atlantic ocean.
Fig: Tide‹


Conclusion: Tides are always dynamic. Tides mainly occurs attraction force among the Moon, the Earth & the Sun. Tides mainly depends on the time & situation.

Labels

Labels:

Comments

Post a Comment

Popular posts from this blog

Behaviouralism in geography

Behaviouralism Behaviouralism is an approach in human geography that came to prominence in the human geography of the 1960s and 1970s. It goes out of the idea that people are the determining factor in the explanation of space. Behaviouralism tries to give an explanation of the spatiallity of human activities. And thereby they use a complex universally applicable model.  Definition of Behaviouralism: The particular aspect with which geographical content is analyzed using mathematical statistics & human sensitivity, is called behavioralism. Concept of Behaviouralism: The Behaviouralism revolution is a theoretical concept. Its theories are not based on assumptions, but are actually explored through ascending methods based on the experience of human behavior. An analysis of the significance of geographical issues in behavioral perspectives within a system, so therefore is no definite boundary to behavioral geography. The main purpose of behaviouralism geography is to in...
Post a Comment
Read more

Deep-Ocean Basin

Abyssal Plain:  Abyssal plains is an underwater plain on the deep ocean floor, usually found at depths between 3000 metres & 6000 metres. Characteristics: a)       Abyssal plain is the most extensive relief zone of the ocean floor. b)      The average slope gradient is almost 0.5ᵒ. c)       It covers nearly 40% of the ocean floor. d)      It is flat & rolling submarine plain. Abyssal Hill:  Abyssal hills a small hill that rises from the floor of an abyssal plain. Characteristics: a)       Covering more than 30% of the ocean floor. b)      Height of this hill is less than 100m. Seamounts: Seamounts is an volcanic projections that developed above the abyssal plains that do not rise above the surface of the sea. Characteristics: a)       Seamounts are circular or elliptical. b) ...
Post a Comment
Read more

Concentric zone theory

Theories of City Structure-Concentric Zone Theory Introduction: The Concentric or Zonal Theory of urban landuse was first proposed in 1923 by E.W. Burgess. He was a sociologist. The idea behind the concentric model is that the development of a city takes place outwards from its central area in a series of concentric circles to form zones.  Assumption:        i.           Cultural & social heterogeneity of the population.       ii.           Commercial-industrial base to the economy of the city.     iii.           Private ownership of property & economic competition for space.     iv.           Expanding area & population of the city.       v.    ...
Post a Comment
Read more