Hostname: page-component-586b7cd67f-gb8f7 Total loading time: 0 Render date: 2024-11-22T21:08:28.048Z Has data issue: false hasContentIssue false
  • English
  • Français

The Aurora1

Published online by Cambridge University Press:  27 October 2009

Hugh Carmichael
Get access Rights & Permissions [Opens in a new window]

Extract

The aurora is a peculiar glow visible in cloud-free night sky. It is most frequently seen in high latitudes, but during very intense displays it may occur even in the tropics. The aurora in the northern hemisphere is called aurora borealis; in the southern aurora australis.

Type
Articles
Information
Polar Record , Volume 4 , Issue 25 , January 1943 , pp. 12 - 16
Copyright
Copyright © Cambridge University Press 1943

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

page 13 note 1 The North Magnetic Pole (c. lat. 70° 30′ N., long. 96° W.) is the place at which the dip needle sets vertically. The North Magnetic Axis Pole (c. lat. 78° 30′ N., long. 69° W.) is a point which has been determined by calculation from observations of the magnetic field over the whole surface of the earth, and it is the north end of the axis of the average magnetic field of the earth. It differs from the North Magnetic Pole because of field distortions produced by variations in the magnetic properties of the earth's crust.