Frequency Analysis of Geomagnetic Micropulsations pi 2

Mid-latitude Vertical Transmission of Geomagnetic Micropulsations through the Ionosphere

A simple oblique dip model for geomagnetic micropulsations

It is pointed out that simple models adopted so far have tended to neglect the obliquity of the magnetic ®eld lines entering the Earth's surface. A simple alternative model is presented, in which the ambient ®eld lines are straight, but enter wedge shaped boundaries at half a right-angle. The model is illustrated by assuming an axially symmetric, compressional, impulse type disturbance at the o...

First Investigation of Geomagnetic Micropulsation, Pi 2, in Egypt

We present first investigation of Pi 2 pulsations observed from MAGnetic Data Acquisition System (MAGDAS) at Fayum and Aswan stations (FYM and ASW) in Egypt. MAGDAS is an important component of the International Space Weather Initiative (ISWI). We carried out our analysis through a visual inspection comparing our events with burst in AE index during the period from November 2008 to October 2009...

Frequency of Proterozoic geomagnetic superchrons

Observations of Pc 3-4 and Pi 2 geomagnetic pulsations in the low-latitude ionosphere

Day-time Pc 3-4 ( 5±60 mHz) and nighttime Pi 2 ( 5±20 mHz) ULF waves propagating down through the ionosphere can cause oscillations in the Doppler shift of HF radio transmissions that are correlated with the magnetic pulsations recorded on the ground. In order to examine properties of these correlated signals, we conducted a joint HF Doppler/ magnetometer experiment for two six-month intervals ...