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ISEE 3 Isotopic Abundance Ratios

(2025). ISEE 3 Isotopic Abundance Ratios [Data set]. Space Physics Data Facility.

ResourceID
spase://NASA/NumericalData/ISEE3/IsotAbun

Description

This data product consists of a single ASCII file
containing values and their uncertainties for 32 abundance ratios of
various pairs of isotopes of 13 chemical elements (C, O, Ne, Mg, Al,
Si, Ti, V, Cr, Mn, Fe, Co, Ni). Between this data product and a
companion catalog with isotopic fractions, isotopic composition
information is given for 21 chemical elements. The ratios are based
on 1978-1981 observations of ~50-500 MeV/n cosmic rays by the U.
Chicago cosmic ray experiment on ISEE 3. Each of the ratios is
linked in the ASCII file to the publication where its derivation is
discussed.

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Details

Version:2.7.1

MetadataRightsList

Rights
SchemeURI
https://spdx.org/licenses/
RightsIdentifierScheme
SPDX
RightsIdentifier
CC0-1.0
RightsURI
https://spdx.org/licenses/CC0-1.0.html
RightsName
Creative Commons Zero v1.0 Universal
Note
CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions

Version:2.7.1

NumericalData

ResourceID
spase://NASA/NumericalData/ISEE3/IsotAbun
NamingAuthority
NASA
ResourceType
NumericalData
ResourceHeader
ResourceName
ISEE 3 Isotopic Abundance Ratios
ReleaseDate
2025-12-04 13:29:38Z
RevisionHistory
RevisionEvent
ReleaseDate
2025-05-15 18:39:11Z
Note
Only known prior ReleaseDate of the metadata
RevisionEvent
ReleaseDate
2025-11-14 16:02:25Z
Note
Added PublicationInfo. Added ResourceType and NamingAuthority. ZCB
RevisionEvent
ReleaseDate
2025-12-04 13:29:38Z
Note
Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB
Description

This data product consists of a single ASCII file
containing values and their uncertainties for 32 abundance ratios of
various pairs of isotopes of 13 chemical elements (C, O, Ne, Mg, Al,
Si, Ti, V, Cr, Mn, Fe, Co, Ni). Between this data product and a
companion catalog with isotopic fractions, isotopic composition
information is given for 21 chemical elements. The ratios are based
on 1978-1981 observations of ~50-500 MeV/n cosmic rays by the U.
Chicago cosmic ray experiment on ISEE 3. Each of the ratios is
linked in the ASCII file to the publication where its derivation is
discussed.

Acknowledgement
Please acknowledge the author(s) of the relevant publication(s) as mentioned above, and acknowledge Mark Wiedenbeck, the ISEE 3 instrument Principal Investigator.
PublicationInfo
Authors
Wiedenbeck, Mark E.
PublicationDate
2025-11-14 16:02:25Z
PublishedBy
Space Physics Data Facility
Contacts
RolePersonStartDateStopDateNote
1.PrincipalInvestigatorspase://SMWG/Person/Mark.E.Wiedenbeck
InformationURL
Name
subdirectory holding ISEE 3 cosmic ray data
URL
https://spdf.gsfc.nasa.gov/pub/data/isee/isee3/energetic_particles_cr/cr_composition/
PriorIDs
spase://VEPO/NumericalData/ISEE3/IsotAbun
spase://VSPO/NumericalData/ISEE3/IsotAbun
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF
Availability
Online
AccessRights
Open
RightsList
Rights
SchemeURI
https://spdx.org/licenses/
RightsIdentifierScheme
SPDX
RightsIdentifier
CC0-1.0
RightsURI
https://spdx.org/licenses/CC0-1.0.html
RightsName
Creative Commons Zero v1.0 Universal
Note
CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products
AccessURL
Name
FTPS from SPDF (not with most browsers)
URL
ftps://spdf.gsfc.nasa.gov/pub/data/isee/isee3/energetic_particles_cr/cr_composition/table3.txt
AccessURL
Name
HTTPS from SPDF
URL
https://spdf.gsfc.nasa.gov/pub/data/isee/isee3/energetic_particles_cr/cr_composition/table3.txt
Description

In CDF via HTTP from SPDF

Format
Text
DataExtent
Quantity
3
Units
KB
Acknowledgement
Please acknowledge the author(s) of the relevant publication(s) as mentioned above, and acknowledge Mark Wiedenbeck, the ISEE 3 instrument Principal Investigator.
InstrumentIDs
spase://SMWG/Instrument/ISEE3/HECR
MeasurementType
EnergeticParticles
MeasurementType
IonComposition
TemporalDescription
TimeSpan
StartDate
1978-08-18 00:00:00
StopDate
1981-04-30 00:00:00
Note
This is span of data used in deriving 32-month averaged ratios
Cadence
P32M
ObservedRegion
Heliosphere.NearEarth