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IMP 8 MAG 15.36s Magnetic Field Measurements

ResourceID
spase://NASA/NumericalData/IMP8/MAG/PT15.36S

Description

IMP 8 magnetic field measurements from tri-axis magnetometer.
Time resolution is 15.36 second. Data are based on a 2010 data reprocessing
by the PI team. Parameter details below are based on the version of the data
in CDAWeb.

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Details

Version:2.2.9

NumericalData

ResourceID
spase://NASA/NumericalData/IMP8/MAG/PT15.36S
ResourceHeader
ResourceName
IMP 8 MAG 15.36s Magnetic Field Measurements
ReleaseDate
2020-07-07 21:14:39Z
Description

IMP 8 magnetic field measurements from tri-axis magnetometer.
Time resolution is 15.36 second. Data are based on a 2010 data reprocessing
by the PI team. Parameter details below are based on the version of the data
in CDAWeb.

Acknowledgement
User will acknowledge the IMP-8 magnetometer team, and the data access path used, in any publication resulting from the use of these data.
Contacts
RolePerson
1.PrincipalInvestigatorspase://SMWG/Person/Adam.Szabo
InformationURL
Name
IMP-8 Magnetometer Experiment Home Page
URL
https://wind.nasa.gov/imp8/
Description

A web site hosting instrument information and providing
access to the data

PriorIDs
spase://VMO/NumericalData/IMP8/MAG/PT15.36S
spase://VSPO/NumericalData/IMP8/MAG/PT15.36S
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF
Availability
Online
AccessRights
Open
AccessURL
Name
FTPS from SPDF (not with most browsers)
URL
ftps://spdf.gsfc.nasa.gov/pub/data/imp/imp8/mag/
Description

An ftp repository hosting 15s magnetic field data from IMP-8.

AccessURL
Name
HTTPS from SPDF
URL
https://spdf.gsfc.nasa.gov/pub/data/imp/imp8/mag/
Description

In CDF via HTTP from SPDF

Format
CDF
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF
Availability
Online
AccessRights
Open
AccessURL
Name
CDAWeb
URL
https://cdaweb.sci.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=I8_15SEC_MAG&index=sp_phys
ProductKey
I8_15SEC_MAG
Description

Subset, plot and list data via CDAWeb

AccessURL
Name
FTPBrowser
URL
https://omniweb.sci.gsfc.nasa.gov/ftpbrowser/imp_mag15s.html
Description

Subset, plot and list data via FTPBrowser

Format
Text
ProviderResourceName
IMP8 MAG15
ProviderProcessingLevel
Level 2
ProviderVersion
3
InstrumentIDs
spase://SMWG/Instrument/IMP8/MAG
MeasurementType
MagneticField
TemporalDescription
TimeSpan
StartDate
1973-10-30 15:00:32Z
StopDate
2000-06-10 15:09:18.720Z
Note
Instrument stopped working on 2000-06-10.
Cadence
PT15.36S
ObservedRegion
Heliosphere.NearEarth
ObservedRegion
Earth.Magnetosheath
ObservedRegion
Earth.Magnetosphere.Magnetotail
Caveats
The time resolution (cadence) is not constant. The time tag corresponds to the last 1.28s measurement in the 15.36s average. Since the data is on average 70% complete, this is quite often different from 15.36 seconds from the previous time tag. On average, however, it should be about 15.36 seconds.
Keywords
Magnetic field
Parameter #1
Name
Epoch
ParameterKey
Epoch
Description

Epoch of the data point (last data in the 15.36-second average)

Cadence
PT15.36S
Units
Milliseconds
ValidMin
01-Jan-1973 00:00:00.000
ValidMax
31-Dec-2000 00:00:00.000
FillValue
-1.0e+31
Support
SupportQuantity
Temporal
Parameter #2
Name
Number of Sequences
ParameterKey
N_Sequences
Description

The number of vectors used in the data average is 4 times this value.

Cadence
PT15.36S
ValidMin
0
ValidMax
999
FillValue
-2147483648
Support
SupportQuantity
Other
Parameter #3
Name
Spacecraft Position GSE
ParameterKey
SC_Pos_GSE
Description

Spacecraft position in GSE coordinates

Cadence
PT15.36S
Units
Re
UnitsConversion
6.378e6>m
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
Structure
Size
3
Element
Name
Xgse
Qualifier
Component.I
Index
1
Element
Name
Ygse
Qualifier
Component.J
Index
2
Element
Name
Zgse
Qualifier
Component.K
Index
3
ValidMin
-50.0
ValidMax
50.0
FillValue
-1.0e+31
Support
SupportQuantity
Positional
Parameter #4
Name
Spacecraft Position GSM
ParameterKey
SC_Pos_GSM
Description

Spacecraft position in GSM coordinates

Cadence
PT15.36S
Units
Re
UnitsConversion
6.378e6>m
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSM
Structure
Size
3
Element
Name
Xgsm
Qualifier
Component.I
Index
1
Element
Name
Ygsm
Qualifier
Component.J
Index
2
Element
Name
Zgsm
Qualifier
Component.K
Index
3
ValidMin
-50.0
ValidMax
50.0
FillValue
-1.0e+31
Support
SupportQuantity
Positional
Parameter #5
Name
B magnitude
ParameterKey
F1_Average_B_15s
Description

Magnitude of the magnetic field

Cadence
PT15.36S
Units
nT
UnitsConversion
1e-9>T
ValidMin
0.0
ValidMax
100.0
FillValue
-1.0e+31
Field
Qualifier
Average
Qualifier
Magnitude
FieldQuantity
Magnetic
Parameter #6
Name
B vector GSE
ParameterKey
B_Vector_GSE
Description

Magnetic field vector in GSE coordinates

Cadence
PT15.36S
Units
nT
UnitsConversion
1e-9>T
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
Structure
Size
3
Element
Name
Bx GSE
Qualifier
Component.I
Index
1
Element
Name
By GSE
Qualifier
Component.J
Index
2
Element
Name
Bz GSE
Qualifier
Component.K
Index
3
ValidMin
-100.0
ValidMax
100.0
FillValue
-1.0e+31
Field
Qualifier
Vector
Qualifier
Average
FieldQuantity
Magnetic
Parameter #7
Name
B vector GSM
ParameterKey
B_Vector_GSM
Description

Magnetic field vector in GSM coordinates

Cadence
PT15.36S
Units
nT
UnitsConversion
1e-9>T
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSM
Structure
Size
3
Element
Name
Bx GSM
Qualifier
Component.I
Index
1
Element
Name
By GSM
Qualifier
Component.J
Index
2
Element
Name
Bz GSM
Qualifier
Component.K
Index
3
ValidMin
-100.0
ValidMax
100.0
FillValue
-1.0e+31
Field
Qualifier
Vector
Qualifier
Average
FieldQuantity
Magnetic
Parameter #8
Name
B Diagonal Variances
ParameterKey
B_jj_Variances
Description

Matrix containing magnetic field variances; diagonal elements Bxx, Byy, Bzz in GSE coordinates

Cadence
PT15.36S
Units
nT^2
UnitsConversion
1e-18>T^2
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
Structure
Size
3
Element
Name
Bxx GSE
Index
1
Element
Name
Byy GSE
Index
2
Element
Name
Bzz GSE
Index
3
ValidMin
0.0
ValidMax
5000.0
FillValue
-1.0e+31
Field
Qualifier
Variance
FieldQuantity
Magnetic
Parameter #9
Name
B off-diagonal variances
ParameterKey
B_jk_Variances
Description

Matrix containing magnetic field variances; off-diagonal elements Byx, Bzx, Bzy in GSE coordinates

Cadence
PT15.36S
Units
nT^2
UnitsConversion
1e-18>T^2
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
Structure
Size
3
Element
Name
Byx GSE
Index
1
Element
Name
Bzx GSE
Index
2
Element
Name
Bzy GSE
Qualifier
Component.K
Index
3
ValidMin
-5000.0
ValidMax
5000.0
FillValue
-1.0e+31
Field
Qualifier
Variance
FieldQuantity
Magnetic