Data · collection
Pumping of Magnetic Fields by PTCC
Listed in NASA Earthdata CMR
This research explores the transport of magnetic fields on the Solar surface by Penetrative Turbulent Compressible Convection (PTCC).This research attempts to better understand the process of solar magnetic field generation by investigating the origin of strong magnetic fields that emerge at the solar surface.
Description
This field is believed to be derived from a strong toroidal magnetic field generated in a layer just below the base of the solar convection zone, called the tachocline.
The tachocline is a thin region of stability located below the unstably stratified convection zone. A thin horizontal magnetic field is arbitrarily introduced into the upper layer of a simulated solar convection zone. To maintain constant pressure, the density of the fluid inside the magnetic field is reduced.
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Hence the magnetic field is buoyant relative to its surroundings. In the absence of convective motion the magnetic field would rise. However, the highly turbulent convection zone drags components of the magnetic field down into the stably stratified layer by the advection of downward flowing plumes.
As these plumes penetrate the stable layer in an area called the "overshoot" region, they decelerate rapidly. This rapid deceleration causes the plumes to "splash" and produce numerous small vortices. These highly turbulent vortices stretch the magnetic field and amplify its strength through local dynamo action.
The net effect is a redistribution of magnetic energy as the magnetic field is both pumped into the tachocline region and then amplified.
Links
Get the data
- GET DATA vets.ucar.edu/vg/Pumping/index.shtml ↗
download · from NASA CMR
Catalogue records · 2
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1214613930-SCIOPS.html ↗
catalogue entry · from NASA CMR
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1214613930-SCIOPS.umm_json ↗
metadata API · from NASA CMR
Topics
- Stated by source
- Not provided · Solar Active Regions · Sunspots
Provenance · 1 source records, 10 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1214613930-SCIOPS | 14 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/sun-earth-interactions/solar-activity/solar-active-regions | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/sun-earth-interactions/solar-activity/sunspots | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:not-provided | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| license_text | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| spatial | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/SpatialExtent |
| temporal | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/TemporalExtents |
| title | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/EntryTitle |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |