Network of magnetic observations Flashcards
1
Q
Where are magnetic field stations?
A
A lot on land in Europe
2
Q
Where are magnetic field measurements difficult?
A
In the ocean
3
Q
What are challenges in measuring magnetic field? (4)
A
Logistical and financial challenges in establishing permanent observations in the ocean
Similar challenges in making mobile measurements in remote continental regions
Temporal variations to westward magnetic drift of magnetic field over time, which would require all measurements to be repeated on a regular basis
Spatial variations due to changes in crustal rock type and land vs ocean measurements
4
Q
What do scientists use?
A
International Geomagnetic Reference Field (IGRF)
