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Spherical Elementary Currents Systems (SECS) technique Spherical Elementary Current (SEC) Amplitudes derived at 10 sec Resolution in Geographic Coordinates

(2009). Spherical Elementary Currents Systems (SECS) technique Spherical Elementary Current (SEC) Amplitudes derived at 10 sec Resolution in Geographic Coordinates [Data set]. University of California, Los Angeles. https://doi.org/10.21978/p8pp8x (CiteAs link). Accessed on .

ResourceID
spase://GBO/NumericalData/SECS/Magnetometer/SECS/PT10S

Description

The Spherical Elementary Current (SEC) Amplitudes data set contains spherical elementary current amplitude data (J) derived using the SECS technique [Amm and Viljanen, Earth Planets Space, v. 51 pp. 431-440, 1999]. The location of these currents is in geographic coordinates at 10s resolution. The distribution of these currents is not the same as the equivalent ionospheric currents. The UT and date are obtained from the file name. For more information see Weygand et al. J. Geophys. Res. 116, A03305, doi:10.1029/2010JA016177, 2011.

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Details

Version:2.4.1

NumericalData

ResourceID
spase://GBO/NumericalData/SECS/Magnetometer/SECS/PT10S
ResourceHeader
ResourceName
Spherical Elementary Currents Systems (SECS) technique Spherical Elementary Current (SEC) Amplitudes derived at 10 sec Resolution in Geographic Coordinates
AlternateName
SEC Amplitude data
DOI
https://doi.org/10.21978/p8pp8x
ReleaseDate
2022-07-25 12:34:56.789
RevisionHistory
RevisionEvent
ReleaseDate
2021-05-31 12:34:56.789
Note
Only known prior ReleaseDate of the metadata
RevisionEvent
ReleaseDate
2022-07-25 12:34:56.789
Note
Deleted one InformationURL, updated two InformationURL URLs by JMW 2022-06-02, metadata updated to SPASE 2.4.1, reviewed by LFB 20220724
Description

The Spherical Elementary Current (SEC) Amplitudes data set contains spherical elementary current amplitude data (J) derived using the SECS technique [Amm and Viljanen, Earth Planets Space, v. 51 pp. 431-440, 1999]. The location of these currents is in geographic coordinates at 10s resolution. The distribution of these currents is not the same as the equivalent ionospheric currents. The UT and date are obtained from the file name. For more information see Weygand et al. J. Geophys. Res. 116, A03305, doi:10.1029/2010JA016177, 2011.

Acknowledgement
Dr. O. Amm; Dr. J.M. Weygand; Prof. V. Angelopoulos, CANMOS, CARISMA, DMI, GIMA, MACCS, STEP, THEMIS
PublicationInfo
Authors
Weygand, James M.
PublicationDate
2009-01-01 00:00:00
PublishedBy
University of California, Los Angeles
Contacts
RolePersonStartDateStopDateNote
1.ProjectScientistspase://SMWG/Person/James.M.Weygand
2.Scientistspase://SMWG/Person/Olaf.Amm
3.ProjectScientistspase://SMWG/Person/Vassilis.Angelopoulos
4.MetadataContactspase://SMWG/Person/James.M.Weygand
InformationURL
Name
Journal of Geophysical Research article on the SECS technique as Applied to North America
URL
https://doi.org/10.1029/2010JA016177
Description

Research Article on the SECS technique applied to North America and Greenland.

InformationURL
Name
SECS technique as Applied to North America
URL
https://sites.epss.ucla.edu/jweygand/eics_na_greenland-html-preview-equivalent-ionospheric-currents-over-north-america-and-greenland/
Description

Homepage with contact, "Rules of the Road," and acknowledgement information on the SECS technique applied to North America and Greenland.

PriorIDs
spase://VMO/NumericalData/SECS/Magnetometer/SECS/PT10S
AccessInformation
RepositoryID
spase://SMWG/Repository/SECS
Availability
Online
AccessRights
Open
AccessURL
Name
Virtual Magnetospheric Observatory
URL
http://vmo.igpp.ucla.edu/data1/SECS/
Description

Equivalent ionsheric current data produced over North America and Greenland

Format
Text
Acknowledgement
Dr. O. Amm; Dr. J.M. Weygand; Prof. V. Angelopoulos, CANMOS, CARISMA, DTU, GIMA, MACCS, STEP, THEMIS
ProcessingLevel
Calibrated
ProviderResourceName
THEMIS
ProviderProcessingLevel
Numerical Data
InstrumentIDs
spase://SMWG/Instrument/SECS/Magnetometer
MeasurementType
MagneticField
TemporalDescription
TimeSpan
StartDate
2007-01-01 00:00:00
StopDate
2011-01-31 23:59:59
Note
Time format in data files is: day, month, year hour, min, seconds. Ex: '01-Jan-1981 00:00:00.000.' Data are not complete from 2007 to 2011. Availables months include: 2007/06, 2007/11-2008/03, 2008/10-2009/03, 2009/10-2010/01, and 2011/01
Cadence
PT10S
Keywords
10 sec
ground magnetometer data
spherical elementary current amplitudes
spherical elementary current systms
Parameter #1
Name
Geographic Location of Spherical Elementary Current Amplitude
ParameterKey
geo_loc
Description

These data are the geographic location in units of degrees of the derived spherical elementary current amplitude at 10 s resolution. The Altitude of the current vector is 100 km above the surface of the Earth.

Caveats
The date and time are obtained from the file name.
Units
degrees
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
GEO
Structure
Size
2
Description

Geographic Laitutde and Longitude of the derived spherical elementary current amplitude value.

Element
Name
Geographic Latitude
Qualifier
DirectionAngle.ElevationAngle
Index
1
Units
degrees
ValidMin
0
ValidMax
90
Element
Name
Geographic Longitude
Qualifier
DirectionAngle.AzimuthAngle
Index
2
Units
degrees
ValidMin
0
ValidMax
360
Support
Qualifier
Vector
SupportQuantity
Positional
Parameter #2
Name
Spherical Elementary Current Amplitude(J)
ParameterKey
J
Description

These data are the spherical elementary current amplitude (only the amplitude of J) in units of A at 10 s resolution. The Altitude of the current vector is 100 km above the surface of the Earth.

Caveats
The date and time are obtained from the file name. These are not the FAC currents.
Units
A
ValidMin
-1e8
ValidMax
1e8
Support
Qualifier
Scalar
SupportQuantity
Other