ELF/VLF wave propagation at subauroral latitudes: Conjugate observation between the ground and Van Allen Probes A

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F16%3A10334289" target="_blank" >RIV/00216208:11320/16:10334289 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1002/2015JA022264" target="_blank" >http://dx.doi.org/10.1002/2015JA022264</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/2015JA022264" target="_blank" >10.1002/2015JA022264</a>

Result language

angličtina

Original language name

ELF/VLF wave propagation at subauroral latitudes: Conjugate observation between the ground and Van Allen Probes A

Original language description

We report simultaneous observation of ELF/VLF emissions, showing similar spectral and frequency features, between a VLF receiver at Athabasca (ATH), Canada, (L = 4.3) and Van Allen Probes A (Radiation Belt Storm Probes (RBSP) A). Using a statistical database from 1 November 2012 to 31 October 2013, we compared a total of 347 emissions observed on the ground with observations made by RBSP in the magnetosphere. On 25 February 2013, from 12:46 to 13:39 UT in the dawn sector (04-06 magnetic local time (MLT)), we observed a quasiperiodic (QP) emission centered at 4 kHz, and an accompanying short pulse lasting less than a second at 4.8 kHz in the dawn sector (04-06 MLT). RBSP A wave data showed both emissions as right-hand polarized with their Poynting vector earthward to the Northern Hemisphere. Using cross-correlation analysis, we did, for the first time, time delay analysis of a conjugate ELF/VLF event between ground and space, finding + 2 to + 4 s (ATH first) for the QP and -3 s (RBSP A first) for the pulse. Using backward tracing from ATH to the geomagnetic equator and forward tracing from the equator to RBSP A, based on plasmaspheric density observed by the spacecraft, we validate a possible propagation path for the QP emission which is consistent with the observed time delay.

Czech name

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Czech description

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Type

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

CEP classification

BL - Plasma physics and discharge through gases

OECD FORD branch

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Project

<a href="/en/project/LH14010" target="_blank" >LH14010: Propagation of waves in the radiation belt region: analysis of measurements of the NASA Van Allen Probes mission</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>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

Journal of Geophysical Research - Space Physics

ISSN

2169-9380

e-ISSN

—

Volume of the periodical

121

Issue of the periodical within the volume

6

Country of publishing house

US - UNITED STATES

Number of pages

10

Pages from-to

5384-5393

UT code for WoS article

000383421100030

EID of the result in the Scopus database

2-s2.0-84978474590