Version:2.7.0
DisplayData
ResourceID
spase://GBO/DisplayData/SECS/Magnetometer/Quicklook/PT60S
ResourceHeader
ResourceName
Spherical Elementary Currents (SECs)Display Data derived using the Spherical Elementary Currents Systems (SECS) technique at 60 sec Resolution in Geographic Coordinates
AlternateName
SECS display data
ReleaseDate
2025-08-05 13:13:01Z
RevisionHistory
RevisionEvent
ReleaseDate
2021-07-19 14:39:57
Note
Deleted one empty Keyword
RevisionEvent
ReleaseDate
2022-07-25 12:34:56.789
Note
Deleted two informationURLs with obsolete URLs, updated two other informationURL URLs, deleted Olaf Amm Contact by JMW 2022-06-02, metadata updated to SPASE 2.4.1, reviewed by LFB 20220724
RevisionEvent
ReleaseDate
2025-08-05 13:13:01Z
Note
Added ObservedRegion(s). Changed http to https in top-level schemaLocation attribute. Fixed version number separator in top-level schemaLocation attribute. Matched version number in schemaLocation attribute to value in Version tag. ZCB
Description
The Spherical Elementary Current (SEC) display data set shows the spherical elementary current equivalent ionospheric currents (mA/m) and 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 the current amplitudes 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. J.M. Weygand; Prof. V. Angelopoulos, AUTUMN, CANMOS, CARISMA, DTU, GIMA, MACCS, McMACC, STEP, THEMIS, USGS
Contacts
InformationURL
Name
Journal of Geophysical Research article on the SECS technique as Applied to North America
URL
Description
Research Article on the SECS technique applied to North America and Greenland.
InformationURL
Name
SECS technique as Applied to North America
URL
Description
Homepage with contact, "Rules of the Road," and acknowledgement information on the SECS technique applied to North America and Greenland.
PriorIDs
spase://VMO/DisplayData/SECS/Magnetometer/Quicklook/PT60S
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
Virtual Magnetospheric Observatory
URL
Description
Equivalent ionsheric current data produced over North America and Greenland
Language
en
Format
Text
Acknowledgement
Dr. O. Amm; Dr. J.M. Weygand; Prof. V. Angelopoulos, AUTUMN, CANMOS, CARISMA, DTU, GIMA, MACCS, MACCS, STEP, THEMIS
ProcessingLevel
Calibrated
ProviderResourceName
THEMIS
ProviderProcessingLevel
Display Data
InstrumentIDs
MeasurementType
MagneticField
TemporalDescription
TimeSpan
StartDate
2007-01-01 00:00:00
StopDate
2015-03-18 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
PT60S
ObservedRegion
Earth.Surface
ObservedRegion
Earth.NearSurface.Ionosphere
Keywords
60 sec
ground magnetometer data
spherical elementary current amplitudes
equivalent ionospheric currents
spherical elementary current systms
Parameter #1
Name
Geographic Location of Equivalent Ionospheric Current
ParameterKey
geo_loc
Description
These data are the geographic location in units of degrees of the derived equivalent ionospheric current at 60 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 Latitude and Longitude of the derived equivalent ionospheric current 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
Equivalent Ionospheric Currents (Jx and Jy)
ParameterKey
Jx_Jy
Description
These data are the Equivalent Ionospheric Currents (only the currents horizontal to the surface of the Earth: Jx and Jy) in units of mA/m at 60 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 Hall currents, but a combination of the Hall and Pederson currents.
Units
mA/m
Structure
Size
2
Description
Jx of the derived equivalent ionospheric current value. Positive Jx points to the geographic north pole. Positive Jy points to geographic east.
Element
Name
Jx
Qualifier
Component.I
Index
1
Units
mA/m
ValidMin
-1e8
ValidMax
1e8
Element
Name
Jy
Qualifier
Component.J
Index
2
Units
mA/m
ValidMin
-1e8
ValidMax
1e8
Support
Qualifier
Vector
SupportQuantity
Other
Parameter #3
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 60 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 Latitude 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 #4
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 60 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. These currents are perpendicular to the ionosphere.
Units
A
ValidMin
-1e8
ValidMax
1e8
Support
Qualifier
Scalar
SupportQuantity
Other
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