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Geotail Editor-A 12 second Low-Energy Particles

ResourceID
spase://JAXA/NumericalData/Geotail/LEP/EDA/PT12S

Description

12-second Editor-A low-energy particle data from the Geotail spacecraft.

        Editor-A data are only acquired with the real-time operation in Usuda Deep Space Center (UDSC),Japan, while the Editor-B data are 24-hours continuouslyrecorded in the onboard tape recorders and are dumpedover the NASA/JPL Deep Space Network (DSN) stations.

        The ion energy analyzer (LEP-EAi) has two energy scan mode: RAM-A (60 eV to 40 keV) and RAM-B (5 keV to 40 keV). RAM-B is selected to protect the very sensitive detector from intense low energy fluxes that are usually seen in the solar wind and magnetosheath. The energy scan mode is automatically selected onboard depending on incoming ion fluxes. At present, only the ion moments in the RAM-A mode are listed for the LEP-EAi data.

        The ion moment data of the solar wind analyzer (LEP-SW) should be used only qualitatively. The LEP-SW ion moments are listed when the energy scan mode of LEP-EAi is RAM-B.

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Details

Version:2.3.0

NumericalData

ResourceID
spase://JAXA/NumericalData/Geotail/LEP/EDA/PT12S
ResourceHeader
ResourceName
Geotail Editor-A 12 second Low-Energy Particles
ReleaseDate
2021-04-27 17:52:35Z
Description

12-second Editor-A low-energy particle data from the Geotail spacecraft.

        Editor-A data are only acquired with the real-time operation in Usuda Deep Space Center (UDSC),Japan, while the Editor-B data are 24-hours continuouslyrecorded in the onboard tape recorders and are dumpedover the NASA/JPL Deep Space Network (DSN) stations.

        The ion energy analyzer (LEP-EAi) has two energy scan mode: RAM-A (60 eV to 40 keV) and RAM-B (5 keV to 40 keV). RAM-B is selected to protect the very sensitive detector from intense low energy fluxes that are usually seen in the solar wind and magnetosheath. The energy scan mode is automatically selected onboard depending on incoming ion fluxes. At present, only the ion moments in the RAM-A mode are listed for the LEP-EAi data.

        The ion moment data of the solar wind analyzer (LEP-SW) should be used only qualitatively. The LEP-SW ion moments are listed when the energy scan mode of LEP-EAi is RAM-B.
Acknowledgement
In any publications, the use of the Geotail data should be acknowledged, for example, as "Geotail magnetic field data were provided by Y. Saito, JAXA in Japan."
Contacts
RolePersonStartDateStopDateNote
1.PrincipalInvestigatorspase://SMWG/Person/Yoshifumi.Saito
2.Scientistspase://SMWG/Person/Donald.H.Fairfield
3.MetadataContactspase://SMWG/Person/Jan.Merka
InformationURL
Name
The Geotail Low Energy Particle Experiment (LEP)
URL
https://www.darts.isas.ac.jp/stp/geotail/jgg_lep.pdf
Description

Reprint of Mukai, T., S. Machida, Y. Saito, M. Hirahara, T. Terasawa, N. Kaya, T. Obara, M. Ejiri, and A. Nishida, The low energy particle (LEP) experiment onboard the Geotail satellite, J. Geomag. Geoelectr., 46, 669-692, 1994.

PriorIDs
spase://VMO/NumericalData/Geotail/LEP/EDA.PT12S
spase://VSPO/NumericalData/Geotail/LEP/EDA/PT12S
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb
Availability
Online
AccessRights
Open
AccessURL
Name
FTPS from SPDF (not with most browsers)
URL
ftps://spdf.gsfc.nasa.gov/pub/data/geotail/lep/eda12sec_lep/
AccessURL
Name
HTTPS from SPDF
URL
https://spdf.gsfc.nasa.gov/pub/data/geotail/lep/eda12sec_lep/
Description

In CDF via HTTP from SPDF

AccessURL
Name
CDAWeb
URL
https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=GE_EDA12SEC_LEP&index=sp_phys
ProductKey
GE_EDA12SEC_LEP
Format
CDF
Encoding
None
Acknowledgement
Data provider Y. Saito at JAXA, Japan and CDAWeb.
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF
Availability
Online
AccessRights
Open
AccessURL
Name
CDAWeb HAPI Server
URL
https://cdaweb.gsfc.nasa.gov/hapi
Style
HAPI
ProductKey
GE_EDA12SEC_LEP
Description

Web Service to this product using the HAPI interface.

Format
CSV
Acknowledgement
Data provider Y. Saito at JAXA, Japan and CDAWeb.
AccessInformation
RepositoryID
spase://SMWG/Repository/DARTS
Availability
Online
AccessRights
Open
AccessURL
Name
DARTS/Geotail
URL
https://www.darts.isas.ac.jp/stp/geotail/
Description

Data ARchives and Transmission System (DARTS) is a versatile space science data archive for astrophysics, solar physics, and solar-terrestrial physics. DARTS primarily consists of the data acquired by Japanese scientific satellites and spacecrafts. DARTS is developed and maintained by the Center of Science-satellite Operation and Data Archive (C-SODA) at ISAS/JAXA.

Format
Text
Encoding
ASCII
Acknowledgement
In any publications, the use of the Geotail data should be acknowledged, for example, as "Geotail magnetic field data were provided by Y. Saito through DARTS at Institute of Space and Astronautical Science, JAXA in Japan."
InstrumentIDs
spase://SMWG/Instrument/Geotail/LEP
MeasurementType
ThermalPlasma
TemporalDescription
TimeSpan
StartDate
1993-09-14 13:45:08
StopDate
2006-12-30 13:30:52
Cadence
PT12S
ObservedRegion
Heliosphere.NearEarth
ObservedRegion
Earth.Magnetosheath
ObservedRegion
Earth.Magnetosphere
ObservedRegion
Earth.Magnetosphere.Magnetotail
Caveats
Please use the Editor-A LEP dataset prior to the Editor-B LEP dataset since plasma moments in the Editor-A data are more reliable. (Plasma moments inthe Editor-B are calculated onboard.) The ion moment data of the solar wind analyzer (LEP-SW) should be used only qualitatively.
Parameter #1
Name
Time Line
ParameterKey
Epoch
Description

Number of milliseconds since the CDF epoch

Units
ms
UnitsConversion
1e-3>s
ValidMin
12-Nov-1994 00:00:00.000
ValidMax
31-Dec-2020 00:00:00.000
FillValue
-1.0E31
Support
SupportQuantity
Temporal
Parameter #2
Name
Ion density
ParameterKey
Ni
Description

Ion density

Caveats
Qualitative use only if Energy Scan Code = 2, i.e. if the energy scan mode is RAM-B/SW.
Units
cm^-3
UnitsConversion
1e-6>m-3
ValidMin
0.0
FillValue
-1.0E31
Particle
ParticleType
Proton
ParticleType
AlphaParticle
ParticleType
Ion
Qualifier
Moment
ParticleQuantity
NumberDensity
EnergyRange
Low
60
High
38150
Units
eV
Parameter #3
Name
Ion temperature
ParameterKey
T
Description

Ion temperature in satellite coordinates

Caveats
Qualitative use only if Energy Scan Code = 2, i.e. if the energy scan mode is RAM-B/SW.
Units
eV
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
SC
Structure
Size
2
Element
Name
Ti,yy
Index
1
ValidMin
-10
ValidMax
10000
FillValue
-1.0E31
Element
Name
Ti,zz
Index
2
ValidMin
-10
ValidMax
10000
FillValue
-1.0E31
Particle
ParticleType
Proton
ParticleType
AlphaParticle
ParticleType
Ion
Qualifier
Moment
Qualifier
Parallel
Qualifier
Perpendicular
ParticleQuantity
Temperature
EnergyRange
Low
60
High
38150
Units
eV
Parameter #4
Name
Sensor
ParameterKey
Sensor
Description

Name of the instrument sensor measuring data.

FillValue
-1.0E31
Support
SupportQuantity
Other
Parameter #5
Name
Mode
ParameterKey
scan_code
Description

Energy scan code/mode:

        *  1 = sensor EA = energy scan mode RAM-A
        *  2 = sensor SW = energy scan mode RAM-B
ValidMin
1
ValidMax
2
Support
SupportQuantity
Other
Parameter #6
Name
Ion velocity (GSE)
ParameterKey
VGSE
Description

Ion velocity in GSE coordinates

Caveats
Qualitative use only if Energy Scan Code = 2, i.e. if the energy scan mode is RAM-B/SW.
Units
km/s
UnitsConversion
1e3>m/s
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
Structure
Size
3
Element
Name
Vxi (GSE)
Qualifier
Component.I
Index
1
ValidMin
-2000
ValidMax
2000
FillValue
-1.0E31
Element
Name
Vyi (GSE)
Qualifier
Component.J
Index
2
ValidMin
-2000
ValidMax
2000
FillValue
-1.0E31
Element
Name
Vzi (GSE)
Qualifier
Component.K
Index
3
ValidMin
-2000
ValidMax
2000
FillValue
-1.0E31
Particle
ParticleType
Proton
ParticleType
AlphaParticle
ParticleType
Ion
Qualifier
Moment
ParticleQuantity
FlowVelocity
EnergyRange
Low
60
High
38150
Units
eV
Parameter #7
Name
Geotail position (GSE)
ParameterKey
XYZGSE
Description

Geotail position in GSE cartesian coordinates

Caveats
1 Re = 6371.2 km
Units
Re
UnitsConversion
6.3712e6>m
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSE
Structure
Size
3
Element
Name
X (GSE)
Qualifier
Component.I
Index
1
ValidMin
-500.0
ValidMax
500.0
FillValue
-1.0E31
Element
Name
Y (GSE)
Qualifier
Component.J
Index
2
ValidMin
-500.0
ValidMax
500.0
FillValue
-1.0E31
Element
Name
Z (GSE)
Qualifier
Component.K
Index
3
ValidMin
-500.0
ValidMax
500.0
FillValue
-1.0E31
Support
Qualifier
Vector
SupportQuantity
Positional
Parameter #8
Name
Ion velocity (GSM)
ParameterKey
VGSM
Description

Ion velocity in GSM coordinates

Caveats
Qualitative use only if Energy Scan Code = 2, i.e. if the energy scan mode is RAM-B/SW.
Units
km/s
UnitsConversion
1e3>m/s
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSM
Structure
Size
3
Element
Name
Vxi (GSM)
Qualifier
Component.I
Index
1
ValidMin
-2000
ValidMax
2000
FillValue
-1.0E31
Element
Name
Vyi (GSM)
Qualifier
Component.J
Index
2
ValidMin
-2000
ValidMax
2000
FillValue
-1.0E31
Element
Name
Vzi (GSM)
Qualifier
Component.K
Index
3
ValidMin
-2000
ValidMax
2000
FillValue
-1.0E31
Particle
ParticleType
Proton
ParticleType
AlphaParticle
ParticleType
Ion
Qualifier
Moment
ParticleQuantity
FlowVelocity
EnergyRange
Low
60
High
38150
Units
eV
Parameter #9
Name
Geotail position (GSM)
ParameterKey
XYZGSM
Description

Geotail position in GSM cartesian coordinates

Caveats
1 Re = 6371.2 km
Units
Re
UnitsConversion
6.3712e6>m
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GSM
Structure
Size
3
Element
Name
X (GSM)
Qualifier
Component.I
Index
1
ValidMin
-500.0
ValidMax
500.0
FillValue
-1.0E31
Element
Name
Y (GSM)
Qualifier
Component.J
Index
2
ValidMin
-500.0
ValidMax
500.0
FillValue
-1.0E31
Element
Name
Z (GSM)
Qualifier
Component.K
Index
3
ValidMin
-500.0
ValidMax
500.0
FillValue
-1.0E31
Support
Qualifier
Vector
SupportQuantity
Positional
Parameter #10
Name
Ion velocity (SM)
ParameterKey
VSM
Description

Ion velocity in SM coordinates

Caveats
Qualitative use only if Energy Scan Code = 2, i.e. if the energy scan mode is RAM-B/SW.
Units
km/s
UnitsConversion
1e3>m/s
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
SM
Structure
Size
3
Element
Name
Vxi (SM)
Qualifier
Component.I
Index
1
ValidMin
-2000
ValidMax
2000
FillValue
-1.0E31
Element
Name
Vyi (SM)
Qualifier
Component.J
Index
2
ValidMin
-2000
ValidMax
2000
FillValue
-1.0E31
Element
Name
Vzi (SM)
Qualifier
Component.K
Index
3
ValidMin
-2000
ValidMax
2000
FillValue
-1.0E31
Particle
ParticleType
Proton
ParticleType
AlphaParticle
ParticleType
Ion
Qualifier
Moment
ParticleQuantity
FlowVelocity
EnergyRange
Low
60
High
38150
Units
eV
Parameter #11
Name
Geotail position (SM)
ParameterKey
XYZSM
Description

Geotail position in SM cartesian coordinates

Caveats
1 Re = 6371.2 km
Units
Re
UnitsConversion
6.3712e6>m
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
SM
Structure
Size
3
Element
Name
X (SM)
Qualifier
Component.I
Index
1
ValidMin
-500.0
ValidMax
500.0
FillValue
-1.0E31
Element
Name
Y (SM)
Qualifier
Component.J
Index
2
ValidMin
-500.0
ValidMax
500.0
FillValue
-1.0E31
Element
Name
Z (SM)
Qualifier
Component.K
Index
3
ValidMin
-500.0
ValidMax
500.0
FillValue
-1.0E31
Support
Qualifier
Vector
SupportQuantity
Positional