Flows around the NOAA 11158 active region at various depths in the subphotospheric zone

Коновалихин Александр Максимович; Гетлинг Александр Владимирович

doi:10.12737/stp-123202601

УДК 523.927

FLOWS AROUND THE NOAA 11158 ACTIVE REGION AT VARIOUS DEPTHS IN THE SUBPHOTOSPHERIC ZONE Flows around the NOAA 11158 active region at various depths in the subphotospheric zone

АА Аа

Опубликовано в Solar-Terrestrial Physics · Том 12, Номер 3 · Страницы 3–15 · Рубрика: Results of current research

DOI: https://doi.org/10.12737/stp-123202601 · EDN: QMFGJI

Получено: 22.10.2025 Одобрено: 04.02.2026 Опубликовано: 19.09.2026 Язык публикаций: ENG

Авторы

КО

Коновалихин Александр Максимович

ГЕ

Гетлинг Александр Владимирович

ORCID

КО

Коновалихин Александр Максимович

Московский государственный университет имени М.В. Ломоносова Россия · Москва

Московский государственный университет имени М.В. Ломоносова, Научно-исследовательский институт ядерной физики имени Д.В. Скобельцына Россия · Москва

ГЕ

Гетлинг Александр Владимирович

Ученая степень: доктор физико-математических наук

ORCID

АННОТАЦИЯ

This study analyzes velocity fields in the Sun’s convection zone at depths from 0.5 to 19 Mm at different evolutionary stages of active region NOAA 11158 (from 09 to 18 February 2011), obtained using techniques of time-distance helioseismology, within the general problem of investigating flow structural organization and dynamics. The data are supplemented with the photospheric velocity fields derived by means of local correlation tracking (LCT) and Doppler measurements. Since the helioseismological determinations of vertical velocities, Vz, are subject to very large errors due to the cross-talk effect, these velocities were also calculated from the divergence of horizontal velocities, divVxy, via the continuity equation in anelastic approximation. Annular structures, likely of convective nature, were detected in the velocity field at depths down to 6 Mm. We present the results of analysis of the correlation between vertical velocities and the divergence of horizontal flows. The dynamics of the correlation coefficient reveals three distinct stages in the evolution of the flow structure: a quiet state, flow formation, and steady fast flows. The correlation coefficient behaves differently at various depths during the quiet and active phases of the evolution. Furthermore, we detected a minimum in the correlation depth profile at ∼8.5 Mm during the quiet period. We conjecture that this feature is related to the supergranulation layer lower boundary, which is presumably located at such depths and reflects a change in the flow orderliness scale from supergranular to giant.

КЛЮЧЕВЫЕ СЛОВА

solar convection zone, convection, helio-seismology

Финансирование

The study was carried out under the Government assignment from Lomonosov Moscow State University

Текст

Текст (EN) (PDF)

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Главный редактор

Жеребцов Гелий Александрович

solater@iszf.irk.ru

Заместитель главного редактора

Степанов Александр Владимирович

stepanov@gaoran.ru

Заместитель главного редактора

Потапов Александр Сергеевич

potapov@iszf.irk.ru

Ответственный секретарь редакции

Полюшкина Наталья Александровна

npol@iszf.irk.ru

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ГОСТ

Коновалихин А. М., Гетлинг А. В. Flows around the NOAA 11158 active region at various depths in the subphotospheric zone // Solar-Terrestrial Physics. 2026. №. 3. С. 3-15. DOI: https://doi.org/10.12737/stp-123202601. EDN: QMFGJI. (дата обращения: 28.09.2026).

MLA

Коновалихин Александр Максимович, Гетлинг А. В.. "Flows around the NOAA 11158 active region at various depths in the subphotospheric zone." Solar-Terrestrial Physics 12.3 (2026): 3-15. DOI: https://doi.org/10.12737/stp-123202601. EDN: QMFGJI.

APA

Коновалихин А. М., Гетлинг А. В. (2026). Flows around the NOAA 11158 active region at various depths in the subphotospheric zone. Solar-Terrestrial Physics, 12(3), 3-15. https://doi.org/10.12737/stp-123202601 EDN: QMFGJI.

Chicago

Коновалихин Александр Максимович, Гетлинг А. В.. "Flows around the NOAA 11158 active region at various depths in the subphotospheric zone." Solar-Terrestrial Physics 12, no. 3 (2026): 3-15. https://doi.org/10.12737/stp-123202601. EDN: QMFGJI.

WIKI

{{cite journal | author = Коновалихин А. М., Гетлинг А. В. | title = Flows around the NOAA 11158 active region at various depths in the subphotospheric zone | journal = Solar-Terrestrial Physics | year = 2026 | volume = 12 | issue = 3 | pages = 3-15 | doi = 10.12737/stp-123202601 }} EDN: QMFGJI

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FLOWS AROUND THE NOAA 11158 ACTIVE REGION AT VARIOUS DEPTHS IN THE SUBPHOTOSPHERIC ZONE Flows around the NOAA 11158 active region at various depths in the subphotospheric zone

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