SPASE Resource Description

spase://JAXA/NumericalData/Geotail/LEP/EDB/PT12S

ResourceName

Geotail Editor-B 12 second Low-Energy Particles

ReleaseDate

2021-04-27 17:52:35Z

Description

12-second Editor-B 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

	Role	Person
1.	PrincipalInvestigator	spase://SMWG/Person/Yoshifumi.Saito
2.	Scientist	spase://SMWG/Person/Donald.H.Fairfield
3.	MetadataContact	spase://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/EDB.PT12S

spase://VSPO/NumericalData/Geotail/LEP/EDB/PT12S

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/edb12sec_lep/

AccessURL

Name

HTTPS from SPDF

URL

https://spdf.gsfc.nasa.gov/pub/data/geotail/lep/edb12sec_lep/

Description

In CDF via HTTP from SPDF

AccessURL

Name

CDAWeb

URL

https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=GE_EDB12SEC_LEP&index=sp_phys

ProductKey

GE_EDB12SEC_LEP

Format

CDF

Encoding

None

AccessDirectoryTemplate

https://cdaweb.gsfc.nasa.gov/pub/data/geotail/lep/edb12sec_lep/$Y

AccessFilenameTemplate

ge_edb12sec_lep_$Y$m$d_$v.cdf

Acknowledgement

Data provider Y. Saito at JAXA, Japan and CDAWeb.

RepositoryID

spase://SMWG/Repository/NASA/GSFC/SPDF

Availability

Online

AccessRights

Open

AccessURL

Name

CDAWeb Programmatic Data Access

URL

https://cdaweb.gsfc.nasa.gov/WS/cdasr/1/dataviews/sp_phys/datasets/GE_EDB12SEC_LEP/clientLibraryExample/

Style

WebService

ProductKey

GE_EDB12SEC_LEP

Description

Access to this data from common programming environments. Note: this AccessInformation element was added by HDPWS.

Format

Binary

Acknowledgement

Data provider Y. Saito at JAXA, Japan and CDAWeb.

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_EDB12SEC_LEP

Description

Web Service to this product using the HAPI interface.

Format

CSV

Acknowledgement

Data provider Y. Saito at JAXA, Japan and CDAWeb.

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."

spase://SMWG/Instrument/Geotail/LEP

ThermalPlasma

TimeSpan

StartDate

1993-10-05 10:09:45

StopDate

2006-12-31 23:59:17

Cadence

PT12S

Heliosphere.NearEarth

Earth.Magnetosheath

Earth.Magnetosphere

Earth.Magnetosphere.Magnetotail

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.

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

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

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

Name

Sensor

ParameterKey

Sensor

Description

Name of the instrument sensor measuring data.

FillValue

-1.0E31

Support

SupportQuantity

Other

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

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

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

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

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

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

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

Geotail Editor-B 12 second Low-Energy Particles

Details

NumericalData