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

ResourceID
spase://VSPO/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://VSPO/NumericalData/THEMIS/E/SCM/PT0.125S
ResourceHeader
ResourceName
THEMIS-E: Search Coil Magnetometer 1/8s, 1/128s and 1/8192s Data
ReleaseDate
2019-08-05 15:03:35Z
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
http://themis.ssl.berkeley.edu/index.shtml
Description

The THEMIS project home page.

InformationURL
Name
THEMIS Data Policy and Credits
URL
http://themis.ssl.berkeley.edu/roadrules.shtml
Description

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

PriorIDs
spase://VMO/NumericalData/THEMIS/E/SCM/PT0.125S
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb
Availability
Online
AccessRights
Open
AccessURL
Name
FTP access to files at SPDF
URL
ftps://spdf.gsfc.nasa.gov/pub/data/themis/the/l2/scm/
Description

NASA/GSFC CDAWeb ftp access to the data.

AccessURL
Name
HTTP access to files at SPDF
URL
https://spdf.gsfc.nasa.gov/pub/data/themis/the/l2/scm/
Description

In CDF via HTTP from SPDF

AccessURL
Name
CDAWeb
URL
https://cdaweb.sci.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=THE_L2_SCM&index=sp_phys
ProductKey
THE_L2_SCM
Description

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

Format
CDF
Encoding
None
AccessInformation
RepositoryID
spase://SMWG/Repository/UCB/THEMIS
Availability
Online
AccessRights
Open
AccessURL
Name
THEMIS L2 SCM data at UC Berkeley
URL
http://themis.ssl.berkeley.edu/data/themis/the/l2/scm/
Description

CDF data files for download, organized by date.

Format
CDF
Encoding
None
ProcessingLevel
Calibrated
ProviderProcessingLevel
Level 2
ProviderVersion
v1
InstrumentIDs
spase://SMWG/Instrument/THEMIS/E/SCM
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).

Caveats
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.

Caveats
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.

Caveats
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.

Caveats
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).

Caveats
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.

Caveats
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.

Caveats
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.

Caveats
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