MHD analysis of propagation of an interplanetary shock across magnetospheric boundaries

Kód výsledku v IS VaVaI

RIV/00216208:11320/11:10108248 - isvavai.cz

Výsledek na webu

http://dx.doi.org/10.1016/j.jastp.2010.05.017

DOI - Digital Object Identifier

10.1016/j.jastp.2010.05.017

Jazyk výsledku

angličtina

Název v původním jazyce

MHD analysis of propagation of an interplanetary shock across magnetospheric boundaries

Popis výsledku v původním jazyce

An important problem of the Space Weather Program is the interaction of interplanetary (IP) shocks with Earth's magnetosphere because their interaction often (but not always) leads to major geomagnetic storms. Since the huge interaction region can be covered by simultaneous spacecraft observations only sporadically, global MHD modeling can help in our understanding of the interaction process. We have developed a procedure that clearly distinguished magnetospheric boundaries in an output of the global MHD model and compare its results to spacecraft observations. Using one IP shock observed by Geotail, we compare its passage through the magnetosphere with predictions of two modifications of the global BATS-R-US MHD code. We demonstrate the complexity ofthe shock interaction with the bow shock, magnetopause, and oscillations of the whole system toward a new equilibrium state with a duration of 10-12 min. Moreover, based on the changes of the magnetopause and bow shock locations in the ni

Název v anglickém jazyce

MHD analysis of propagation of an interplanetary shock across magnetospheric boundaries

Popis výsledku anglicky

An important problem of the Space Weather Program is the interaction of interplanetary (IP) shocks with Earth's magnetosphere because their interaction often (but not always) leads to major geomagnetic storms. Since the huge interaction region can be covered by simultaneous spacecraft observations only sporadically, global MHD modeling can help in our understanding of the interaction process. We have developed a procedure that clearly distinguished magnetospheric boundaries in an output of the global MHD model and compare its results to spacecraft observations. Using one IP shock observed by Geotail, we compare its passage through the magnetosphere with predictions of two modifications of the global BATS-R-US MHD code. We demonstrate the complexity ofthe shock interaction with the bow shock, magnetopause, and oscillations of the whole system toward a new equilibrium state with a duration of 10-12 min. Moreover, based on the changes of the magnetopause and bow shock locations in the ni

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BL - Fyzika plasmatu a výboje v plynech

OECD FORD obor

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Projekt

GA205/09/0112: Studium oblastí vytvářených přepojováním magnetických siločar

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

Journal of Atmospheric and Solar-Terrestrial Physics

ISSN

1364-6826

e-ISSN

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Svazek periodika

73

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

20-29

Kód UT WoS článku

000287073100003

EID výsledku v databázi Scopus

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