SCIENCE|natural and applied sciences|earth sciences · SCIENCE|natural and applied sciences|life sciences
- comhathrú maighnéadach laethúil Reference Faomhadh an téarma seo mar chuid de Thionscadal Lex
- ga
- magnetic diurnal variation
- en
- Definition oscillations of the Earth's magnetic field which have a periodicity of about a day and which depend to a close approximation only on local time and geographic latitude Reference Multilingual Aeronautical Dictionary(AGARD,1980)