The aclinic line is influenced by the Earth's geomagnetic field.
magnetic declination
Frequency:
45
%
The aclinic line helps in determining magnetic declination.
Idiomatic Expressions for aclinic line
Phrase: beyond the aclinic line
Meaning: to be in a region where magnetic compasses are unreliable
Usage: Navigating beyond the aclinic line requires special equipment to account for the magnetic anomalies.