No abstract

No abstract

No abstract

Landmark values of the equatorial electrojet: the minimum intensity Jm A.km-1, its distance xm km and ratio to maximum intensity Jm/Jo; the magnetic field constant K nT; the maximum northward magnetic field Xo nT, and the distance of zero northward magnetic field wx km; the minimum northward magnetic field Xm nT, its distance um km and ratio to maximum northward field Xm/Xo; the vertical magnetic field Zo nT at the dip equator and the distance of zero vertical field wz km; the maximum vertical magnetic field ZM nT, its distance uM km and ratio to maximum northward field Zm/Xo; have all been derived from September equinox satellite data and they compare favourably with their values from ground-based data. Our Jm/Jo agrees excellently with MUSMANN and SEILER (1978) and ANANDARAO and RAGHAVARAO (1979); while our xm agrees excellently with the location of CAHILL's (1959) westward current, and the findings of MUSMANN and SEILER (1978). The landmark distances xm, wx, um, uM, wz and the ratios Jm/Jo, Xm/Xo and ZM/ Xo do not vary with longitude but the intensity Jm and magnetic fields, K, Xo, Xm, Zo and

No abstract