Observations are presented from the Indian magnetometer network (dipole latitude range 1.2°S to 13.5°N) of short-lived (<1 hr) disturbances in the daytime equatorial geomagnetic H field associated with specific phases of ...

The enhanced radiation of the X-rays and the ultra-violets during a chromospheric flare can induce a qualitative change in the ionospheric current system. The observational results of this effect, popularly known as ...

Experimental data on daily variations in the geomagnetic field are analyzed for evidence of counterflowing electrojets. In particular, the disappearance of the q type of Es layer (Es-q) and the appearance of blanketing-type ...