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Characteristics of Reconnection Sites and Fast Flow Channels in an MHD Simulation. Supplementary MHD simulation movie mS2-Bz.mp4 for 14 March 2008.

(2020). Characteristics of Reconnection Sites and Fast Flow Channels in an MHD Simulation. Supplementary MHD simulation movie mS2-Bz.mp4 for 14 March 2008. [Data set]. UCLA. https://doi.org/10.21978/p8rw5g. Accessed on .

Note: Proper references, including those in BibTex or other formats, should include the "Accessed on date" as shown above to identify the version of the resource being cited in a given publication.

ResourceID
spase://NASA/DisplayData/UCLA/Global-MHD-code/mS2-Bz/PT10S

Description

This movie illustrates the development of the vertical component of magnetic field in the neutral surface. At the
start of the movie, the field is everywhere quite weak, even in the flow channels. By 04:11 UT, the fast flow compresses the
magnetic field ahead of it turning a narrow region to reddish brown. Similar compression appears at 04:32 UT as the extended
narrow flow channel begins to form. Shortly later, the region encompassing the THEMIS orbits begins to turn continuously red
indicating the accumulation of magnetic flux in the region. By 04:44 UT, the single flow channel continues to deliver magnetic
flux to this region. As shown in the text, this is the time identified as expansion onset when tail field rotates to a more
dipolar configuration. Contours of Vx = 250 km/s are denoted by heavy black lines. Heavy black and white lines at >10 Re
pre-midnight depict the location of THEMIS spacecraft. A dashed black semi-circle defines synchronous orbit. White lines are
contours of plasma pressure. The Earth is a green half-circular patch.

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Details

Version:2.3.1

DisplayData

ResourceID
spase://NASA/DisplayData/UCLA/Global-MHD-code/mS2-Bz/PT10S
ResourceHeader
ResourceName
Characteristics of Reconnection Sites and Fast Flow Channels in an MHD Simulation. Supplementary MHD simulation movie mS2-Bz.mp4 for 14 March 2008.
DOI
https://doi.org/10.21978/p8rw5g
ReleaseDate
2022-03-16 00:00:00Z
Description

This movie illustrates the development of the vertical component of magnetic field in the neutral surface. At the
start of the movie, the field is everywhere quite weak, even in the flow channels. By 04:11 UT, the fast flow compresses the
magnetic field ahead of it turning a narrow region to reddish brown. Similar compression appears at 04:32 UT as the extended
narrow flow channel begins to form. Shortly later, the region encompassing the THEMIS orbits begins to turn continuously red
indicating the accumulation of magnetic flux in the region. By 04:44 UT, the single flow channel continues to deliver magnetic
flux to this region. As shown in the text, this is the time identified as expansion onset when tail field rotates to a more
dipolar configuration. Contours of Vx = 250 km/s are denoted by heavy black lines. Heavy black and white lines at >10 Re
pre-midnight depict the location of THEMIS spacecraft. A dashed black semi-circle defines synchronous orbit. White lines are
contours of plasma pressure. The Earth is a green half-circular patch.

Acknowledgement
Mostafa El-Alaoui, Raymond J. Walker; Robert L. McPherron
PublicationInfo
Authors
R.L. McPherron; M. El-Alaoui; R.J. Walker; and R.L. Richard
PublicationDate
2020-08-31 00:00:00Z
PublishedBy
UCLA
Funding
Agency
NASA
Project
Substorm current wedge development and evolution using THEMIS observation and simulations
AwardNumber
NNX17AB83G
Funding
Agency
NASA
Project
Structure and evolution of plasma sheet fast flows using THEMIS observation and global MHD simulations
AwardNumber
NNX15AI63G
Funding
Agency
NSF
Project
GEM: A Statistical Study of the Substorm Sequence and Phenomena Associated with Expansion Onset
AwardNumber
1602588
Contacts
RolePersonStartDateStopDateNote
1.GeneralContactspase://SMWG/Person/Robert.L.McPherron
2.MetadataContactspase://SMWG/Person/James.M.Weygand
InformationURL
Name
Virtual Magnetospheric Observatory directory containing movies for Journal of Gephysical Research publication.
URL
http://vmo.igpp.ucla.edu/data1/McPherron/Simulation_Movies_and_Data/Simulation_Movies/mS2-Bz.avi
Description

Supplimentary movies for JGR publication

AccessInformation
RepositoryID
spase://SMWG/Repository/UCLA/VMO
Availability
Online
AccessRights
Open
AccessURL
Name
Virtual Magnetospheric Observatory
URL
http://vmo.igpp.ucla.edu/data1/
Description

Virtual Magnetospheric Observatory

Language
EN
Format
AVI
Acknowledgement
If data downloaded from the VMO Data Repository are used in publication kindly acknowledge the Virtual Magnetospheric Observatory, Earth, Planetary and Space Science Department, University of California, Los Angeles for providing access to the data.
ProcessingLevel
Raw
ProviderName
UCLA M. El-Alaoui MHD Simulation
ProviderResourceName
MHD Simulation Movies
ProviderProcessingLevel
Raw
InstrumentIDs
spase://SMWG/Instrument/UCLA/Global-MHD-code
MeasurementType
MagneticField
TemporalDescription
TimeSpan
StartDate
2008-03-14 04:00:00
StopDate
2008-03-14 05:00:00
DisplayCadence
PT10S
ObservedRegion
Earth.Magnetosphere
Keywords
MHD Simulation
Substorm
High Speed Earthward Flows
Parameter #1
Name
MHD simulation movie of GSM X component of position for 14 March 2008
ParameterKey
X component of position
Description

Two dimensional display of this movie of the GSM X component of position is on the original.

Cadence
PT10S
Units
Re
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSM
Structure
Size
3840 1890
Description

Each image is 3840 pixels by 1890 pixels and there are 360 frames in the movie.

ValidMin
-70
ValidMax
0
Support
Qualifier
Direction
SupportQuantity
Positional
Parameter #2
Name
MHD simulation movie of GSM Y component of position for 14 March 2008
ParameterKey
Y component of position
Description

Two dimensional display of this movie of the GSM Y component of position is on the original.

Cadence
PT10S
Units
Re
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSM
Structure
Size
3840 1890
Description

Each image is 3840 pixels by 1890 pixels and there are 360 frames in the movie.

ValidMin
-20
ValidMax
20
Support
Qualifier
Direction
SupportQuantity
Positional
Parameter #3
Name
MHD simulation movie of GSM Z component of magnetic field for 14 March 2008
ParameterKey
Bz component of magnetic field
Description

Two dimensional display of this movie of the GSM Z component of magnetic field is on the original, not interpolated grid.

Cadence
PT10S
Units
nT
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSM
Structure
Size
3840 1890
Description

Each image is 3840 pixels by 1890 pixels and there are 360 frames in the movie.

ValidMin
-20
ValidMax
20
Field
Qualifier
Vector
FieldQuantity
Magnetic
Parameter #4
Name
MHD simulation movie of GSM plasma flow velocity for 14 March 2008
ParameterKey
Vx and Vy components of plasma flow
Description

Two dimensional display of this movie of the GSM plasma flow velocity interpolated grid.

Cadence
PT10S
Units
km/s
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSM
Structure
Size
3840 1890
Description

Each image is 3840 pixels by 1890 pixels and there are 360 frames in the movie.

ValidMin
-300
ValidMax
300
Support
Qualifier
Vector
SupportQuantity
Velocity