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THEMIS-E: Search Coil Magnetometer 1/8s, 1/128s and 1/8192s Data

ResourceID
spase://NASA/NumericalData/THEMIS/E/SCM/PT0.125S

Description

THEMIS-E: Search Coil Magnetometer (SCM) magnetic field measurements. Includes FAST SURVEY, PARTICLE BURST and WAVE BURST data. FAST SURVEY (SCF): 1/8 second time resolution. PARTICLE BURST (SCP): 1/128 second time resolution; only short bursts of data. WAVE BURST (SCW): 1/8192 second time resolution; only short bursts of data. Sensor and electronics design provided by LPP, Roux and Le Contel.

SCM Telemetry Modes (Only first 3 apply to level 2 SCM products):

+-------------------------------------------------------------------------------------------------------------------------+
| Fast Survey (scf) | Waveform data for the 3 SCM components; sampling rate between 2 and 256 S/s, nominal value is 8. |
| Particle Burst (scp) | Waveform data nominally at 128 S/s. |
| Wave Burst (scw) | Waveform data nominally at 8192 S/s. |
| Filter Bank (fbk)^ | Mean signal value over 6 frequency bands (4-2 kHz, 1-0.5 kHz, 256-128 Hz, 64-32 Hz, 16-8 Hz. |
| Particle Burst Spectra (ffp)^^ | Compressed FFT spectra in 16, 32, or 64 frequency bins; sampling between 1/4 to 8 S/s. |
| Wave Burst Spectra (ffw)^^ | Compressed FFT spectra in 16, 32, or 64 frequency bins; sampling between 1/4 to 8 S/s. |
+-------------------------------------------------------------------------------------------------------------------------+

  • ^Only two available inputs between all 3 SCM and 12 EFI data signals.
  • ^^Only four available inputs between 3 SCM and 16 other data signals.

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Details

Version:2.2.9

NumericalData

ResourceID
spase://NASA/NumericalData/THEMIS/E/SCM/PT0.125S
ResourceHeader
ResourceName
THEMIS-E: Search Coil Magnetometer 1/8s, 1/128s and 1/8192s Data
ReleaseDate
2020-07-07 21:15:28Z
Description

THEMIS-E: Search Coil Magnetometer (SCM) magnetic field measurements. Includes FAST SURVEY, PARTICLE BURST and WAVE BURST data. FAST SURVEY (SCF): 1/8 second time resolution. PARTICLE BURST (SCP): 1/128 second time resolution; only short bursts of data. WAVE BURST (SCW): 1/8192 second time resolution; only short bursts of data. Sensor and electronics design provided by LPP, Roux and Le Contel.

SCM Telemetry Modes (Only first 3 apply to level 2 SCM products):

+-------------------------------------------------------------------------------------------------------------------------+
| Fast Survey (scf) | Waveform data for the 3 SCM components; sampling rate between 2 and 256 S/s, nominal value is 8. |
| Particle Burst (scp) | Waveform data nominally at 128 S/s. |
| Wave Burst (scw) | Waveform data nominally at 8192 S/s. |
| Filter Bank (fbk)^ | Mean signal value over 6 frequency bands (4-2 kHz, 1-0.5 kHz, 256-128 Hz, 64-32 Hz, 16-8 Hz. |
| Particle Burst Spectra (ffp)^^ | Compressed FFT spectra in 16, 32, or 64 frequency bins; sampling between 1/4 to 8 S/s. |
| Wave Burst Spectra (ffw)^^ | Compressed FFT spectra in 16, 32, or 64 frequency bins; sampling between 1/4 to 8 S/s. |
+-------------------------------------------------------------------------------------------------------------------------+

  • ^Only two available inputs between all 3 SCM and 12 EFI data signals.
  • ^^Only four available inputs between 3 SCM and 16 other data signals.
Acknowledgement
NASA Contract NAS5-02099, V. Angelopoulos for use of data from the THEMIS Mission; also A. Roux and CETP for their work on the SCM.
Contacts
RolePerson
1.PrincipalInvestigatorspase://SMWG/Person/Vassilis.Angelopoulos
2.PrincipalInvestigatorspase://SMWG/Person/Alain.Roux
InformationURL
Name
THEMIS Home Page
URL
Description

The THEMIS project home page.

InformationURL
Name
THEMIS Data Policy and Credits
URL
Description

Details on THEMIS data policy and giving proper credits in publications.

PriorIDs
spase://VMO/NumericalData/THEMIS/E/SCM/PT0.125S
spase://VSPO/NumericalData/THEMIS/E/SCM/PT0.125S
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
FTPS from SPDF (not with most browsers)
URL
Description

NASA/GSFC CDAWeb ftp access to the data.

AccessURL
Name
HTTPS from SPDF
URL
Description

In CDF via HTTP from SPDF

AccessURL
Name
CDAWeb
URL
ProductKey
THE_L2_SCM
Description

Access to ASCII, CDF, and plots via NASA/GSFC CDAWeb

Format
CDF
Encoding
None
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
THEMIS L2 SCM data at UC Berkeley
URL
Description

CDF data files for download, organized by date.

Format
CDF
Encoding
None
ProcessingLevel
Calibrated
ProviderProcessingLevel
Level 2
ProviderVersion
v1
InstrumentIDs
MeasurementType
MagneticField
TemporalDescription
TimeSpan
StartDate
2007-02-24 00:00:00Z
RelativeStopDate
-P7D
Cadence
PT0.125S
ObservedRegion
Heliosphere.NearEarth
ObservedRegion
Earth.Magnetosphere.Magnetotail
ObservedRegion
Earth.Magnetosphere.Main
ObservedRegion
Earth.Magnetosheath
Caveats
See THEMIS website for caveats
Parameter #1
Name
Fast-Survey Magnetic Field Magnitude
ParameterKey
the_scf_btotal
Description

Total B-field magnitude from SCF data (fast-survey, 1/8 sec time resolution).

Cadence
PT0.125S
Units
nT
UnitsConversion
1e-9>T
ValidMin
0.0
ValidMax
25000.0
FillValue
NaN
Field
Qualifier
Total
Qualifier
Magnitude
FieldQuantity
Magnetic
Parameter #2
Name
Fast-Survey Magnetic Field Vector (GSE)
ParameterKey
the_scf_gse
Description

B-Field vector from fast survey mode (1/8 sec time resolution) in GSE Coordinates.

Cadence
PT0.125S
Units
nT
UnitsConversion
1e-9>T
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
Structure
Size
3
Element
Name
Bx SCF-E
Qualifier
Component.I
Index
1
ValidMin
-25000.0
ValidMax
25000.0
FillValue
NaN
Element
Name
By SCF-E
Qualifier
Component.J
Index
2
ValidMin
-25000.0
ValidMax
25000.0
FillValue
NaN
Element
Name
Bz SCF-E
Qualifier
Component.K
Index
3
ValidMin
-25000.0
ValidMax
25000.0
FillValue
NaN
Field
Qualifier
Vector
FieldQuantity
Magnetic
Parameter #3
Name
Fast-Survey Magnetic Field Vector (GSM)
ParameterKey
the_scf_gsm
Description

B-Field vector from fast survey mode (1/8 sec time resolution) in GSM Coordinates.

Cadence
PT0.125S
Units
nT
UnitsConversion
1e-9>T
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSM
Structure
Size
3
Element
Name
Bx SCF-E
Qualifier
Component.I
Index
1
ValidMin
-25000.0
ValidMax
25000.0
FillValue
NaN
Element
Name
By SCF-E
Qualifier
Component.J
Index
2
ValidMin
-25000.0
ValidMax
25000.0
FillValue
NaN
Element
Name
Bz SCF-E
Qualifier
Component.K
Index
3
ValidMin
-25000.0
ValidMax
25000.0
FillValue
NaN
Field
Qualifier
Vector
FieldQuantity
Magnetic
Parameter #4
Name
Fast-Survey Magnetic Field Vector (DSL)
ParameterKey
the_scf_dsl
Description

B-Field vector from fast survey mode (1/8 sec time resolution) in DSL (despun spacecraft) coordinates.

Cadence
PT0.125S
Units
nT
UnitsConversion
1e-9>T
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
SR2
Structure
Size
3
Element
Name
Bx SCF-E
Qualifier
Component.I
Index
1
ValidMin
-25000.0
ValidMax
25000.0
FillValue
NaN
Element
Name
By SCF-E
Qualifier
Component.J
Index
2
ValidMin
-25000.0
ValidMax
25000.0
FillValue
NaN
Element
Name
Bz SCF-E
Qualifier
Component.K
Index
3
ValidMin
-25000.0
ValidMax
25000.0
FillValue
NaN
Field
Qualifier
Vector
FieldQuantity
Magnetic
Parameter #5
Name
Fast-Survey Time
ParameterKey
the_scf_time
Description

Fast-survey mode data timestamp, UTC, in seconds since 01-Jan-1970 00:00:00.

Caveats
Not including leap seconds
Cadence
PT0.125S
Units
s
ValidMin
0.0
ValidMax
5.0E9
FillValue
NaN
Support
SupportQuantity
Temporal
Parameter #6
Name
Particle-Burst Magnetic Field Magnitude
ParameterKey
the_scp_btotal
Description

Total B-Field magnitude from SCP data(particle burst, 1/128 second time resolution).

Units
nT
UnitsConversion
1e-9>T
ValidMin
0.0
ValidMax
25000.0
FillValue
NaN
Field
Qualifier
Total
Qualifier
Magnitude
FieldQuantity
Magnetic
Parameter #7
Name
Particle-Burst Magnetic Field Vector (GSE)
ParameterKey
the_scp_gse
Description

B-Field vector from particle burst mode (1/128 second time resolution) in GSE coordinates.

Cadence
PT0.0078125S
Units
nT
UnitsConversion
1e-9>T
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
Structure
Size
3
Element
Name
Bx SCP-E
Qualifier
Component.I
Index
1
ValidMin
-25000.0
ValidMax
25000.0
FillValue
NaN
Element
Name
By SCP-E
Qualifier
Component.J
Index
2
ValidMin
-25000.0
ValidMax
25000.0
FillValue
NaN
Element
Name
Bz SCP-E
Qualifier
Component.K
Index
3
ValidMin
-25000.0
ValidMax
25000.0
FillValue
NaN
Field
Qualifier
Vector
FieldQuantity
Magnetic
Parameter #8
Name
Particle-Burst Magnetic Field Vector (GSM)
ParameterKey
the_scp_gsm
Description

B-Field vector from particle burst mode (1/128 second time resolution) in GSM coordinates.

Cadence
PT0.0078125S
Units
nT
UnitsConversion
1e-9>T
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSM
Structure
Size
3
Element
Name
Bx SCP-E
Qualifier
Component.I
Index
1
ValidMin
-25000.0
ValidMax
25000.0
FillValue
NaN
Element
Name
By SCP-E
Qualifier
Component.J
Index
2
ValidMin
-25000.0
ValidMax
25000.0
FillValue
NaN
Element
Name
Bz SCP-E
Qualifier
Component.K
Index
3
ValidMin
-25000.0
ValidMax
25000.0
FillValue
NaN
Field
Qualifier
Vector
FieldQuantity
Magnetic
Parameter #9
Name
Particle-Burst Magnetic Field Vector (DSL)
ParameterKey
the_scp_dsl
Description

B-Field vector from particle burst mode (1/128 second time resolution) in DSL (despun spacecraft) coordinates.

Cadence
PT0.0078125S
Units
nT
UnitsConversion
1e-9>T
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
SR2
Structure
Size
3
Element
Name
Bx SCP-E
Qualifier
Component.I
Index
1
ValidMin
-25000.0
ValidMax
25000.0
FillValue
NaN
Element
Name
By SCP-E
Qualifier
Component.J
Index
2
ValidMin
-25000.0
ValidMax
25000.0
FillValue
NaN
Element
Name
Bz SCP-E
Qualifier
Component.K
Index
3
ValidMin
-25000.0
ValidMax
25000.0
FillValue
NaN
Field
Qualifier
Vector
FieldQuantity
Magnetic
Parameter #10
Name
Particle-Burst Time
ParameterKey
the_scp_time
Description

Particle Burst mode timestamp (1/128 second resolution), UTC, in seconds since 01-Jan-1970 00:00:00.

Caveats
Not including leap seconds
Cadence
PT0.0078125S
Units
s
ValidMin
0.0
ValidMax
5.0E9
FillValue
NaN
Support
SupportQuantity
Temporal
Parameter #11
Name
Wave-Burst Magnetic field Magnitude
ParameterKey
the_scw_btotal
Description

Total B-Field magnitude from SCW data(wave burst mode, 1/8192 second time resolution).

Cadence
PT0.0001220703125S
Units
nT
UnitsConversion
1e-9>T
ValidMin
0.0
ValidMax
25000.0
FillValue
NaN
Field
Qualifier
Total
Qualifier
Magnitude
FieldQuantity
Magnetic
Parameter #12
Name
Wave-Burst Magnetic Field Vector (GSE)
ParameterKey
the_scw_gse
Description

B-Field vector from wave burst mode(1/8192 second time resolution) in GSE coordinates.

Cadence
PT0.0001220703125S
Units
nT
UnitsConversion
1e-9>T
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
Structure
Size
3
Element
Name
Bx SCW-E
Qualifier
Component.I
Index
1
ValidMin
-25000.0
ValidMax
25000.0
FillValue
NaN
Element
Name
By SCW-E
Qualifier
Component.J
Index
2
ValidMin
-25000.0
ValidMax
25000.0
FillValue
NaN
Element
Name
Bz SCW-E
Qualifier
Component.K
Index
3
ValidMin
-25000.0
ValidMax
25000.0
FillValue
NaN
Field
Qualifier
Vector
FieldQuantity
Magnetic
Parameter #13
Name
Wave-Burst Magnetic Field Vector (GSM)
ParameterKey
the_scw_gsm
Description

B-Field vector from wave burst mode(1/8192 second time resolution) in GSM coordinates.

Cadence
PT0.0001220703125S
Units
nT
UnitsConversion
1e-9>T
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSM
Structure
Size
3
Element
Name
Bx SCW-E
Qualifier
Component.I
Index
1
ValidMin
-25000.0
ValidMax
25000.0
FillValue
NaN
Element
Name
By SCW-E
Qualifier
Component.J
Index
2
ValidMin
-25000.0
ValidMax
25000.0
FillValue
NaN
Element
Name
Bz SCW-E
Qualifier
Component.K
Index
3
ValidMin
-25000.0
ValidMax
25000.0
FillValue
NaN
Field
Qualifier
Vector
FieldQuantity
Magnetic
Parameter #14
Name
Wave-Burst Magnetic Field Vector (DSL)
ParameterKey
the_scw_dsl
Description

B-Field vector from wave burst mode(1/8192 second time resolution) in DSL (despun spacecraft) coordinates.

Cadence
PT0.0001220703125S
Units
nT
UnitsConversion
1e-9>T
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
SR2
Structure
Size
3
Element
Name
Bx SCW-E
Qualifier
Component.I
Index
1
ValidMin
-25000.0
ValidMax
25000.0
FillValue
NaN
Element
Name
By SCW-E
Qualifier
Component.J
Index
2
ValidMin
-25000.0
ValidMax
25000.0
FillValue
NaN
Element
Name
Bz SCW-E
Qualifier
Component.K
Index
3
ValidMin
-25000.0
ValidMax
25000.0
FillValue
NaN
Field
Qualifier
Vector
FieldQuantity
Magnetic
Parameter #15
Name
Wave-Burst Time
ParameterKey
the_scw_time
Description

Wave Burst mode timestamp (1/8192 second resolution), UTC, in seconds since 01-Jan-1970 00:00:00

Caveats
Not including leap seconds
Cadence
PT0.0001220703125S
Units
s
ValidMin
0.0
ValidMax
5.0E9
FillValue
NaN
Support
SupportQuantity
Temporal