Version:2.2.9
NumericalData
ResourceID
spase://NASA/NumericalData/IMP7/LEPEDEA/PT120S
ResourceHeader
ResourceName
IMP 7 LANL 2-m plasma data
ReleaseDate
2020-07-07 21:14:38Z
Description
IMP 7 LANL 2-min solar wind plasma parameter data, including temperature anisotropy and alpha/proton ratio
Contacts
PriorIDs
spase://VSPO/NumericalData/P_IMP7_HDR_LANL_2MIN
spase://VMO/NumericalData/IMP7/LANL/PT120S
spase://VSPO/NumericalData/IMP7/LEPEDEA/PT120S
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
AccessURL
Name
FTPS from SPDF (not with most browsers)
URL
AccessURL
Name
HTTPS from SPDF
URL
Description
In CDF via HTTP from SPDF
Format
Text
Acknowledgement
National Aeronautics and Space Administration; National Space Science Data Center and Space Physics Data Facility, Dr John Gosling
ProcessingLevel
Calibrated
ProviderResourceName
Los Alamos National Laboratory IMP-7 Solar Plasma Electrostatic Analyzer data
ProviderProcessingLevel
Calibrated
InstrumentIDs
MeasurementType
ThermalPlasma
TemporalDescription
TimeSpan
StartDate
1972-10-06 00:00:00
StopDate
1978-09-30 00:00:00
Cadence
PT120S
ObservedRegion
Heliosphere.NearEarth
ObservedRegion
Earth.Magnetosphere
ObservedRegion
Earth.NearSurface
Parameter #1
Name
Spacecraft Identification
ParameterKey
Column_1
Description
String identifying the spacecraft. In this dataset it should be IMP7.
Cadence
PT120S
Support
Parameter #2
Name
Universal Time
ParameterKey
Column_2 Column_3 Column_4
Description
The three universal time columns from left to right are: year month day (yymmdd), seconds of the day, and hour minute second (hhmmss).
Cadence
PT120S
Structure
Size
3
Description
Universal Time expressed in two columns yymmdd and hhmms.
Element
Name
Year Month Day (yymmdd)
Index
1
ParameterKey
Column_2
Element
Name
Seconds of the day
Index
2
ParameterKey
Column_3
Units
seconds
Element
Name
Hour Minute Second (hhmmss)
Index
3
ParameterKey
Column_4
Support
Parameter #3
Name
IMP7 Spacecraft Position Vector in Solar Ecliptic coordinates
ParameterKey
Column_5 Column_6 Column_7
Description
Location of the spacecraft in solar ecliptic coordinates in units of kilometers and degrees.
Cadence
PT120S
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
SE
Structure
Size
3
Element
Name
Radius
Qualifier
Component.I
Index
1
ParameterKey
column_5
Units
km
Element
Name
SELat
Qualifier
Component.J
Index
2
ParameterKey
column_6
Units
degrees
Element
Name
SELong
Qualifier
Component.K
Index
3
ParameterKey
column_7
Units
degrees
Support
SupportQuantity
Positional
Parameter #4
Name
IMP7 Density
ParameterKey
Column_8
Description
IMP7 density values in units of #/cm^3.
Cadence
PT120S
Units
#/cm^3
Particle
ParticleType
Proton
Qualifier
Magnitude
ParticleQuantity
NumberDensity
Parameter #5
Name
IMP7 Flow Speed
ParameterKey
Column_9
Description
IMP7 speed values in units of km/s.
Cadence
PT120S
Units
km/s
Particle
ParticleType
Proton
Qualifier
Magnitude
ParticleQuantity
FlowSpeed
Parameter #6
Name
IMP7 Flow Azimuth
ParameterKey
Column_10
Description
IMP7 flow azimuth direction in units of degrees.
Cadence
PT120S
Units
degrees
Particle
ParticleType
Proton
Qualifier
Magnitude
ParticleQuantity
ArrivalDirection
Parameter #7
Name
Proton Parallel Temperature
ParameterKey
Column_11
Description
Proton temprature in the parallel direction in units of Kelvin.
Cadence
PT120S
Units
K
Particle
ParticleType
Proton
Qualifier
Parallel
ParticleQuantity
Temperature
Parameter #8
Name
Proton Perpendicular Temperature
ParameterKey
Column_12
Description
Proton temprature in the perpendicular direction in units of Kelvin.
Cadence
PT120S
Units
K
Particle
ParticleType
Proton
Qualifier
Perpendicular
ParticleQuantity
Temperature
Parameter #9
Name
Pressure Tensor Symmetry Axis, AZ
ParameterKey
Column_13
Description
Pressure tensor symmetry axis in units of degrees.
Cadence
PT120S
Units
degrees
Particle
ParticleType
Proton
Qualifier
DirectionAngle
ParticleQuantity
Pressure
Parameter #10
Name
Alpha proton ratio
ParameterKey
Column_14
Description
Ratio of alphas to protons.
Cadence
PT120S
Particle
ParticleType
AlphaParticle
ParticleType
Proton
Qualifier
Ratio
ParticleQuantity
NumberDensity
Parameter #11
Name
Flow Speed AP
ParameterKey
Column_15
Description
Relative flow speed of alphas to protons in units of km/s.
Cadence
PT120S
Units
km/s
Particle
ParticleType
AlphaParticle
ParticleType
Proton
Qualifier
Magnitude
ParticleQuantity
FlowSpeed
Parameter #12
Name
Flow Azimuth AP
ParameterKey
Column_16
Description
Relative Flow Angle of alphas to protons in units of degrees.
Cadence
PT120S
Units
degrees
Particle
ParticleType
AlphaParticle
ParticleType
Proton
Qualifier
Magnitude
ParticleQuantity
ArrivalDirection
Parameter #13
Name
Alpha proton temperature ratio
ParameterKey
Column_17
Description
Ratio of the temperature of the alphas to the temperature of the protons.
Cadence
PT120S
Particle
ParticleType
AlphaParticle
ParticleType
Proton
Qualifier
Ratio
ParticleQuantity
Temperature
Parameter #14
Name
Alpha Temperature Anisotropy
ParameterKey
Column_18
Description
Alpha temperature anisotropy of perpendicular temperature to parallel temperature.
Cadence
PT120S
Particle
ParticleType
AlphaParticle
Qualifier
Anisotropy
ParticleQuantity
Temperature
Parameter #15
Name
Alpha Pressure Tensor Symmetry Axis, AZ
ParameterKey
Column_19
Description
Alpha pressure tensor symmetry axis in units of degrees.
Cadence
PT120S
Units
degrees
Particle
ParticleType
AlphaParticle
Qualifier
DirectionAngle
ParticleQuantity
Pressure