Extremely Distant Magnetopause Locations Caused by Magnetosheath Jets

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F23%3A00580522" target="_blank" >RIV/68378289:_____/23:00580522 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/23:10476014

Výsledek na webu

<a href="https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2023GL106131" target="_blank" >https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2023GL106131</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1029/2023GL106131" target="_blank" >10.1029/2023GL106131</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Extremely Distant Magnetopause Locations Caused by Magnetosheath Jets

Popis výsledku v původním jazyce

Magnetopause position is controlled mainly by the solar wind dynamic pressure and north-south interplanetary magnetic field component and these quantities are included in different empirical magnetopause models. We have collected about 50,000 of dayside magnetopause crossings observed by THEMIS in course of 2007–2019 and compared the observed magnetopause position with model prediction. The difference between observed and predicted magnetopause radial distance, Robs − Rmod is used for quantifying the model-observation agreement. Its median values are well predicted for cases up to Robs ≈ 12 RE for all models but higher positive deviations are found for larger magnetopause distances, mainly under a nearly radial field and low dynamic pressure. The analysis reveals their connection with transient magnetopause displacements caused by strong sunward flows in the magnetosheath. We discuss the possible origin of the observed magnetosheath flow switching in terms of the interaction of magnetosheath jets with the magnetopause.

Název v anglickém jazyce

Extremely Distant Magnetopause Locations Caused by Magnetosheath Jets

Popis výsledku anglicky

Magnetopause position is controlled mainly by the solar wind dynamic pressure and north-south interplanetary magnetic field component and these quantities are included in different empirical magnetopause models. We have collected about 50,000 of dayside magnetopause crossings observed by THEMIS in course of 2007–2019 and compared the observed magnetopause position with model prediction. The difference between observed and predicted magnetopause radial distance, Robs − Rmod is used for quantifying the model-observation agreement. Its median values are well predicted for cases up to Robs ≈ 12 RE for all models but higher positive deviations are found for larger magnetopause distances, mainly under a nearly radial field and low dynamic pressure. The analysis reveals their connection with transient magnetopause displacements caused by strong sunward flows in the magnetosheath. We discuss the possible origin of the observed magnetosheath flow switching in terms of the interaction of magnetosheath jets with the magnetopause.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

<a href="/cs/project/GA21-26463S" target="_blank" >GA21-26463S: Procesy na magnetopauze, jejich příčiny a následky</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Geophysical Research Letters

ISSN

0094-8276

e-ISSN

1944-8007

Svazek periodika

50

Číslo periodika v rámci svazku

24

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

e2023GL106131

Kód UT WoS článku

001127489700001

EID výsledku v databázi Scopus

2-s2.0-85180371776