Assertion: magnetic field | /r/CapableOf | vary in time
Facets:
value: as the deep flows change
type: TEMPORAL
value: sinusoidally
type: MANNER
Source sentences:
text: Another alternative is that the circuit may change in size in a fixed external magnetic field or, as in the case of alternating-current (AC) generation, that the circuit may be a coil of conducting wire rotating in a magnetic field so that the flux Φ varies sinusoidally in time.
text: Liquid churning in Earth’s core generates most of the magnetic field, which varies over time as the deep flows change.
text: In the geomagnetic model, the information about the magnetic fields (varying with time and location) is stored as a set of "spherical harmonic coefficients".