Reproducing the observed energy-dependent structure of Earth's electron radiation belts during storm recovery with an event-specific diffusion model

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F16%3A00462937" target="_blank" >RIV/68378289:_____/16:00462937 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11320/16:10334255

Result on the web

<a href="http://dx.doi.org/10.1002/2016GL068869" target="_blank" >http://dx.doi.org/10.1002/2016GL068869</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/2016GL068869" target="_blank" >10.1002/2016GL068869</a>

Result language

angličtina

Original language name

Reproducing the observed energy-dependent structure of Earth's electron radiation belts during storm recovery with an event-specific diffusion model

Original language description

We present dynamic simulations of energy-dependent losses in the radiation belt slot region and the formation of the two-belt structure for the quiet days after the 1 March storm. The simulations combine radial diffusion with a realistic scattering model, based data-driven spatially and temporally resolved whistler-mode hiss wave observations from the Van Allen Probes satellites. The simulations reproduce Van Allen Probes observations for all energies and L shells (2-6) including (a) the strong energy dependence to the radiation belt dynamics (b) an energy-dependent outer boundary to the inner zone that extends to higher L shells at lower energies and (c) an S-shaped energy-dependent inner boundary to the outer zone that results from the competition between diffusive radial transport and losses. We find that the characteristic energy-dependent structure of the radiation belts and slot region is dynamic and can be formed gradually in similar to 15days, although the S shape can also be reproduced by assuming equilibrium conditions. The highest-energy electrons (E>300keV) of the inner region of the outer belt (L similar to 4-5) also constantly decay, demonstrating that hiss wave scattering affects the outer belt during times of extended plasmasphere. Through these simulations, we explain the full structure in energy and L shell of the belts and the slot formation by hiss scattering during storm recovery. We show the power and complexity of looking dynamically at the effects over all energies and L shells and the need for using data-driven and event-specific conditions.

Czech name

—

Czech description

—

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BL - Plasma physics and discharge through gases

OECD FORD branch

—

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Geophysical Research Letters

ISSN

0094-8276

e-ISSN

—

Volume of the periodical

43

Issue of the periodical within the volume

11

Country of publishing house

US - UNITED STATES

Number of pages

10

Pages from-to

5616-5625

UT code for WoS article

000379851800010

EID of the result in the Scopus database

2-s2.0-84977177416