Meridional flow in the Sun’s convection zone is a single cell in each hemisphere

Gizon, Laurent; Cameron, Robert H.; Pourabdian, Majid; Liang, Zhi-Chao; Fournier, Damien; Birch, Aaron; Hanson, Chris S.

doi:10.1126/science.aaz7119

アイテム詳細

登録内容を編集ファイル形式で保存

一時保存へ追加

タグ情報を表示リリース履歴を表示詳細要約

公開

学術論文

Meridional flow in the Sun’s convection zone is a single cell in each hemisphere

MPS-Authors

/persons/resource/persons103925

Gizon, Laurent
Department Solar and Stellar Interiors, Max Planck Institute for Solar System Research, Max Planck Society;

/persons/resource/persons103859

Cameron, Robert H.
Department Solar and Stellar Interiors, Max Planck Institute for Solar System Research, Max Planck Society;

/persons/resource/persons231919

Pourabdian, Majid
Department Solar and Stellar Interiors, Max Planck Institute for Solar System Research, Max Planck Society;

/persons/resource/persons209270

Liang, Zhi-Chao
Department Solar and Stellar Interiors, Max Planck Institute for Solar System Research, Max Planck Society;

/persons/resource/persons214480

Fournier, Damien
Department Solar and Stellar Interiors, Max Planck Institute for Solar System Research, Max Planck Society;

/persons/resource/persons103834

Birch, Aaron
Department Solar and Stellar Interiors, Max Planck Institute for Solar System Research, Max Planck Society;

External Resource

There are no locators available

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

フルテキスト (公開)

公開されているフルテキストはありません

付随資料 (公開)

There is no public supplementary material available

引用

Gizon, L., Cameron, R. H., Pourabdian, M., Liang, Z.-C., Fournier, D., Birch, A., & Hanson, C. S. (2020). Meridional flow in the Sun’s convection zone is a single cell in each hemisphere. Science, 368(6498), 1469-1472. doi:10.1126/science.aaz7119.

引用: https://hdl.handle.net/21.11116/0000-0006-C85B-3

要旨

The Sun's magnetic field is generated by subsurface motions of the convecting plasma. The latitude at which the magnetic field emerges through the solar surface (as sunspots) drifts toward the equator over the course of the 11-year solar cycle. We use helioseismology to infer the meridional flow (in the latitudinal and radial directions) over two solar cycles covering 1996-2019. Two data sources are used, which agree during their overlap period of 2001-2011. The time-averaged meridional flow is shown to be a single cell in each hemisphere, carrying plasma toward the equator at the base of the convection zone with a speed of similar to 4 meters per second at 45 degrees latitude. Our results support the flux-transport dynamo model, which explains the drift of sunspot-emergence latitudes through the meridional flow.