The ELF will monitor the resonant frequency of the earth's atmospheric cavity using ground-based receiving coils. The resulting data may provide information about global warming and the nature of earth's atmospheric mantles. Students will be able to excite these waves using the high power tyransmitter at HIPAS and watch their decay in the earth's resonant cavity. students will learn that a natural system will respond with a larger amplitude when excited at its resonance.

ELF waves are of great interest because they resonate with ion cyclotron motion in the Artic atmosphere. CO2- and Cl -. (Ion Dynamics and Ozon, A.Y. Wong 1991. Negative CO2 and Cl ions.