Civil Engineering - Surveying - Discussion

Discussion Forum : Surveying - Section 3 (Q.No. 28)
28.
Diurnal variation of magnetic declination is
greater at equator than nearer the poles
less at equator than nearer the poles
less in summer than in winter
same at all latitudes and during different months.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
5 comments Page 1 of 1.

Ayush Verma said:   1 year ago
Thanks for explaining.

Virender said:   2 years ago
Why it is less at equator? Explain.

Aarti said:   4 years ago
Thanks for explaining it.

Bharat Chaudhary said:   4 years ago
Thanks @Rahil.

Rahil said:   5 years ago
The daily variation of magnetic declination is as much as 10^2. This variation is also known as Dirunal Variation. The following factors influence its magnitude:
(a) It is more in the day and less in the night.
(b) It is more in summer and less in winter.
(c) A number of variation changes from year to year.
(d) It is more near magnetic poles and less near the equator.
(1)

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