|Delivery Type||Delivery length / details|
|Seminars / Tutorials||2 seminars/tutorials|
|Assessment Type||Assessment length / details||Proportion|
|Semester Exam||3 Hours end of semester examination for MPhys students||100%|
|Semester Exam||2 Hours end of semester examination for BSc students||100%|
After taking this module students should be able to:
- describe the general behaviour of the ionosphere and the magnetosphere
- understand the solar-terrestrial coupling processes and their effects on the ionosphere and magnetosphere
- outline the principles of propagation of radiowaves in an ionised medium
The morphology of the ionosphere is described, the production and loss processes of ionisation under normal conditions are explained, and the effects of neutral winds and electric fields are considered. An introduction is given to the influence of the ionosphere on radiowaves. The coupling of the solar wind to the Earth's magnetoshpere is discussed and the consequences on the ionosphere described.
Radiowave Propagation: Plasma frequency, gyrofrequency, phase velocity, group velocity, refractive index. Measurement techniques and an introduction to ionospheric radio physics.
The High-Latitude Ionosphere and the Magnetosphere: Magnetoscopic regions. Geomagnetic field; dipolar and distorted. Motion of charged particles; gyro, bounce and drift motion. Soalr wind-magnetosphere coupling; magnetic reconnection. Plasma convection. Electric currents; Pedersen, Hall, field-aligned. High-latitude ionosphere coupling to Magnetoshpere, auroral electrojets, geomagnetic substorms, aurora.
This module is at CQFW Level 6