A relatively smooth excursion of the H (horizontal) component (see geomagnetic elements) of the geomagnetic field away from and returning to quiet levels. Bays are ”positive” if H increases and ”negat
ive” if H decreases.
In general, any identifiable parcel of solar wind. More specifically, a region of about 0.25 AU in radial dimension in which the magnetic field strength is high and the direction of one component of t
he magnetic field changes appreciably by means of a rotation nearly parallel to a plane. Magnetic clouds are one manifestation of coronal mass ejections in the interplanetary medium.
A transient event observed in the solar wind characterized as a region of enhanced magnetic field strength, smooth rotation of the magnetic field vector and low proton density and temperature. (spase)
A transient event observed in the solar wind characterized as a region of enhanced magnetic field strength, smooth rotation of the magnetic field vector and low proton density and temperature. (spase)
A transient event observed in the solar windcharacterized as a region of enhanced magnetic field strength, smoothrotation of the magnetic field vector and low proton density andtemperature.
A field of force generated by electrical currents, which guides the motion of anything electrically charged. Earth and the sun and several planets have giant magnetic fields surrounding them, which ro
ughly link north and south poles along lines of magnetic force known as magnetic field lines.
A magnetic field has both a strength and a direction at each point in space. For example, at each point on Earth, the magnetic field -- and thus a compass -- points in a particular direction, roughly
toward the north. Magnetic fields are therefore generally represented as lines: the direction of the line gives the direction of the field, and the closeness of the lines indicates the strength.