Answer
328.2k+ views
Hint: In a rotating system, geostrophic motion is fluid movement in a direction parallel to lines of equal pressure (isobars).
Complete answer:
The balance of the horizontal pressure gradient pressure and the force due to the earth's rotation to the left in the northern hemisphere and to the right in the southern hemisphere determines the direction and speed of the wind. The horizontal wind velocity at which the Coriolis force balances the horizontal pressure gradient force perfectly. The geostrophic wind is therefore directed to the left in the northern hemisphere and to the right in the southern hemisphere along the contour lines on a constant-pressure surface (along the isobars on a geopotential surface) with low altitudes (low pressure).
Example-An artillery round launched from a vast distance is a frequent example. If the coriolis force is not taken into consideration, it will land to the right (in the northern hemisphere) of the predicted route. The shell seems to bend to the right to an observer on the earth's surface, despite being on a ballistic arc.
Cause-The Coriolis force deflects the air mass to the right as it begins to move. The deflection rises until the pressure gradient force equalises the Coriolis force. The wind will be blowing parallel to the isobars at this moment. The wind is referred to as "geostrophic wind" when this happens.
Note: Wind gets its initial speed and direction from pressure gradient force, which is caused by variations in air pressure over time (PGF). This is why wind speeds tend to rise when isobars are packed closer together (greater pressure gradient).
Complete answer:
The balance of the horizontal pressure gradient pressure and the force due to the earth's rotation to the left in the northern hemisphere and to the right in the southern hemisphere determines the direction and speed of the wind. The horizontal wind velocity at which the Coriolis force balances the horizontal pressure gradient force perfectly. The geostrophic wind is therefore directed to the left in the northern hemisphere and to the right in the southern hemisphere along the contour lines on a constant-pressure surface (along the isobars on a geopotential surface) with low altitudes (low pressure).
Example-An artillery round launched from a vast distance is a frequent example. If the coriolis force is not taken into consideration, it will land to the right (in the northern hemisphere) of the predicted route. The shell seems to bend to the right to an observer on the earth's surface, despite being on a ballistic arc.
Cause-The Coriolis force deflects the air mass to the right as it begins to move. The deflection rises until the pressure gradient force equalises the Coriolis force. The wind will be blowing parallel to the isobars at this moment. The wind is referred to as "geostrophic wind" when this happens.
Note: Wind gets its initial speed and direction from pressure gradient force, which is caused by variations in air pressure over time (PGF). This is why wind speeds tend to rise when isobars are packed closer together (greater pressure gradient).
Recently Updated Pages
Mark and label the given geoinformation on the outline class 11 social science CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
When people say No pun intended what does that mea class 8 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Name the states which share their boundary with Indias class 9 social science CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Give an account of the Northern Plains of India class 9 social science CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Change the following sentences into negative and interrogative class 10 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Advantages and disadvantages of science
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Trending doubts
Bimbisara was the founder of dynasty A Nanda B Haryanka class 6 social science CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Which are the Top 10 Largest Countries of the World?
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Differentiate between homogeneous and heterogeneous class 12 chemistry CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
10 examples of evaporation in daily life with explanations
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Give 10 examples for herbs , shrubs , climbers , creepers
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
How do you graph the function fx 4x class 9 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Difference Between Plant Cell and Animal Cell
![arrow-right](/cdn/images/seo-templates/arrow-right.png)