Understanding the Role of EMIC Waves in Radiation Belt and Ring Current Dynamics: Recent Advances (Invited)

Abstract:

Electromagnetic ion cyclotron (EMIC) waves are believed to be important for influencing the dynamics of energetic particles in the inner magnetosphere, especially in relation to ring current dynamics (cf. ring current models, such as Khazanov et al. [2007], Jordanova et al. [2012], and other models). EMIC waves also postulated to influence the higher energy electrons in the Van Allen belts, through a Doppler shifted cyclotron resonance. We will present latest results on EMIC wave characterizations and studies of their impact on energetic particles in the inner magnetosphere. We will draw on results from recent satellite missions including THEMIS and Cluster, as well as the very latest results from the Van Allen Probes launched on 31st August 2012. We will also highlight the value of data from networks of modern ground-based magnetometers in providing continuous monitoring over local, continental, and even global scales, especially in conjunction with in-situ measurements from satellites.