Počet záznamů: 1

Meridional Motion and Reynolds Stress from Debrecen Photoheliographic Data

SYSNO ASEP	0480935
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Meridional Motion and Reynolds Stress from Debrecen Photoheliographic Data
Tvůrce(i)	Sudar, D. (HR) Brajša, R. (HR) Skokić, Ivica (ASU-R) Beljan, I.P. (HR) Woehl, H. (DE)
Zdroj.dok.	Solar Physics. - : Springer - ISSN 0038-0938 Roč. 292, č. 7 (2017), 86/1-86/13
Poč.str.	13 s.
Forma vydání	Tištěná - P
Jazyk dok.	eng - angličtina
Země vyd.	NL - Nizozemsko
Klíč. slova	sunspots ; rotation ; velocity fields
Vědní obor RIV	BN - Astronomie a nebeská mechanika, astrofyzika
Obor OECD	Astronomy (including astrophysics,space science)
CEP	7E13003 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy
Institucionální podpora	ASU-R - RVO:67985815
UT WOS	000406304300004
EID SCOPUS	85021091545
DOI	10.1007/s11207-017-1105-4
Anotace	he Debrecen Photoheliographic Data catalogue is a continuation of the Greenwich Photoheliographic Results providing daily positions of sunspots and sunspot groups. We analyse the data for sunspot groups focussing on meridional motions and transfer of angular momentum towards the solar equator. Velocities are calculated with a daily shift method including an automatic iterative process of removing the outliers. Apart from the standard differential rotation profile, we find meridional motion directed towards the zone of solar activity. The difference in measured meridional flow in comparison to Doppler measurements and some other tracer measurements is interpreted as a consequence of different flow patterns inside and outside of active regions. We also find a statistically significant dependence of meridional motion on rotation velocity residuals confirming the transfer of angular momentum towards the equator. Analysis of horizontal Reynolds stress reveals that the transfer of angular momentum is stronger with increasing latitude up to about 40 degrees, where there is a possible maximum in absolute value.
Pracoviště	Astronomický ústav
Kontakt	Radka Svašková, bibl@asu.cas.cz, Tel.: 323 620 326
Rok sběru	2018

Počet záznamů: 1