Dartmouth Events

Physics & Astronomy/Thayer Plasma Seminar - Lauren Blum, NASA/GSFC

Title: "Multi-Point Measurements to Characterize Particle and Wave Populations in the Inner Magnetosphere"

5/8/2018
4 pm – 5 pm
Wilder 202
Intended Audience(s): Public
Categories: Lectures & Seminars
Abstract: Multi-point measurements in the inner magnetosphere allow the spatial and temporal evolution of various particle populations and wave modes to be disentangled.  To better characterize and quantify radiation belt precipitation loss, we utilize multi-point measurements both to study precipitating electrons directly as well as the potential drivers of this loss process.  Using measurements from the dual Van Allen Probes, we estimate spatial and temporal scales of various wave modes in the inner magnetosphere and compare these to precipitation characteristics. In particular, we investigate the properties of electromagnetic ion cyclotron (EMIC) waves to better determine their effects on energetic electrons in the Earth’s radiation belts. Additionally, we examine the evolution of plasma structures and their gradients to better understand the drivers of EMIC wave characteristic scales, as this helps reveal the underlying physics behind the wave generation and enables better prediction of where and when EMIC waves will be present. These studies aid in the understanding of outer radiation belt dynamics and the relationship between precipitating energetic electrons, electromagnetic waves, and global magnetospheric conditions.
For more information, contact:
Tressena Manning
tressena.a.manning@dartmouth.edu
603-646-2854
Permanent URL to this event: https://physics.dartmouth.edu/events/event?event=51484

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