Related Experiment Video
Updated: Dec 13, 2025
09:55
Surface Renewal: An Advanced Micrometeorological Method for Measuring and Processing Field-Scale Energy Flux Density Data
Published on: December 12, 2013
9.0K
Electron Microburst Size Distribution Derived With AeroCube-6.
M Shumko1, A T Johnson1, J G Sample1
1Department of Physics Montana State University Bozeman MT USA.
Journal of Geophysical Research. Space Physics
|July 28, 2020
Summary
Microbursts, sudden electron bursts from radiation belts, are studied for their role in electron loss. This research quantifies microburst sizes, finding most are under 200 km at the magnetic equator.
Area of Science:
- Space Physics
- Plasma Physics
- Atmospheric Science
Background:
- Microbursts are impulsive electron increases from Earth's radiation belts into the atmosphere.
- They are suspected of rapidly depleting radiation belt electrons, but their exact contribution to electron loss is not well understood.
Purpose of the Study:
- To statistically study the size distribution of microbursts.
- To better quantify the role of microbursts in radiation belt electron losses.
Main Methods:
- Utilized data from the AeroCube-6 CubeSat pair for statistical analysis.
- Developed Monte Carlo and analytic models to test microburst size distributions.
- Employed a Markov chain Monte Carlo sampler to estimate optimal model parameters.
Main Results:
- Derived the microburst size distribution in low Earth orbit and at the magnetic equator.
- Observed the majority of microbursts when CubeSat separation was minimal (tens of kilometers).
- Determined that most observed microbursts are less than 200 km in size at the magnetic equator.
Conclusions:
- The study provides a quantified size distribution for microbursts.
- Findings suggest microbursts may play a significant role in radiation belt dynamics.
- Comparison with whistler mode chorus wave distributions offers insights into microburst generation mechanisms.
More Related Videos
Related Concept Videos
01:18Boundary Layer Characteristics
404
When a fluid encounters a solid surface, a boundary layer forms due to the interaction between the fluid's motion and the stationary surface. This phenomenon is characterized by a thin region adjacent to the surface where viscous forces dominate, influencing the fluid's velocity profile. The development of the boundary layer begins at the leading edge of the surface and evolves as the fluid moves downstream.As the fluid flows over the surface, friction between the fluid and the wall slows down...
404
01:16Precipitate Formation and Particle Size Control
4.3K
In precipitation gravimetry, the precipitating agent should react specifically or selectively with the analyte. While a specific reagent reacts with the analyte alone, a selective reagent can react with a limited number of chemical species.
The obtained precipitate should be either a pure substance of known composition or easily converted to one by a simple process, such as ignition or drying. In addition, the precipitate should be insoluble and easily filterable. In general, filterability...
The obtained precipitate should be either a pure substance of known composition or easily converted to one by a simple process, such as ignition or drying. In addition, the precipitate should be insoluble and easily filterable. In general, filterability...
4.3K
01:25Atomic Absorption Spectroscopy: Atomization Methods
1.2K
Atomic Absorption Spectroscopy (AAS) atomizes samples through flame atomization or electrothermal atomization. Flame atomization typically involves a nebulizer and spray chamber assembly to combine the sample with a fuel–oxidant mixture, creating a fine aerosol mist that enters a burner. Typically, the fuel and oxidant are combined in an approximately stoichiometric ratio. However, for atoms that are easily oxidized, a fuel-rich mixture may be more advantageous. Only about 5% of the...
1.2K
01:12Precipitation Processes
3.8K
The experimental conditions in a gravimetric analysis should be optimized to maximize the particle size and purity of the obtained precipitate. Ideally, the concentration of the precipitating reagent should be low with effective stirring to maintain low relative supersaturation for the growth of large crystals. In homogeneous precipitation, the precipitant is slowly generated by a chemical reaction in the solution to avoid local reagent excesses. For example, urea decomposes gradually to...
3.8K
01:16Electrostatic Boundary Conditions
831
Consider an external electric field propagating through a homogeneous medium. When the electric field crosses the surface boundary of the medium, it undergoes a discontinuity. The electric field can be resolved into normal and tangential components. The amount by which the field changes at any boundary is given by the difference between the field components above and below the surface boundary.
The surface integral of an electric field is given by Gauss's law in integral form and is related to...
The surface integral of an electric field is given by Gauss's law in integral form and is related to...
831
01:26General External Flow Characteristics
446
The study of external flow is essential for creating structures and objects that interact efficiently and safely with moving fluids, such as air or water. When a body is immersed in a flowing fluid, it experiences two primary forces: drag, which opposes motion along the flow direction, and lift, which acts perpendicular to the flow. The shape, size, and orientation of the object influence these forces.Streamlined and Blunt Bodies in External FlowObjects in fluid flow are classified as...
446