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L. Svalgaard's Interplanetary Sector Boundary Crossing List

Leif Svalgaard (2022). L. Svalgaard's Interplanetary Sector Boundary Crossing List [Data set]. Leif Svalgaard, Stanford University. https://doi.org/10.48322/b9m5-f869.

Note: Proper references, including those in BibTex or other formats, should include the "Accessed on date" as shown above to identify the version of the resource being cited in a given publication.

ResourceID
spase://NASA/Catalog/OMNI/Sector_Boundary_Crossing

Description

This list of interplanetary sector boundary crossings has been compiled by Leif Svalgaard from ground magnetometer data and in situ interplanetary magnetic field observations Identification of the boundaries . For each crossing, the day of crossing, the direction of
crossing (+to- or -to+) and the durations (in whole days) of single-polarity intervals on either side of the crossing are given.

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Details

Version:2.7.2

MetadataRightsList

Rights
SchemeURI
https://spdx.org/licenses/
RightsIdentifierScheme
SPDX
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:2.7.2

Catalog

ResourceID
spase://NASA/Catalog/OMNI/Sector_Boundary_Crossing
NamingAuthority
NASA
ResourceType
Catalog
ResourceHeader
ResourceName
L. Svalgaard's Interplanetary Sector Boundary Crossing List
DOI
https://doi.org/10.48322/b9m5-f869
ReleaseDate
2026-02-02 13:10:26Z
RevisionHistory
RevisionEvent
ReleaseDate
2023-05-11 12:34:56.789
Note
Updated to SPASE Version 2.5.0 if needed, Added DOI information, JMW
RevisionEvent
ReleaseDate
2026-02-02 13:10:26Z
Note
Added MetadataRightsList. Added ResourceType and NamingAuthority. Updated to 2.7.1. Changed http to https in top-level schemaLocation attribute. Fixed version number separator in top-level schemaLocation attribute. ZCB
RevisionEvent
ReleaseDate
2026-07-23 19:09:33
Note
The directory was changed. The broken links was replaced - access URL. Description updated. Time span changed. Contact end day added, parameters added, repository added, instrument added (OYU)
Description

This list of interplanetary sector boundary crossings has been compiled by Leif Svalgaard from ground magnetometer data and in situ interplanetary magnetic field observations Identification of the boundaries . For each crossing, the day of crossing, the direction of
crossing (+to- or -to+) and the durations (in whole days) of single-polarity intervals on either side of the crossing are given.

Acknowledgement
Leif Svalgaard for creating and maintaining this event list
PublicationInfo
Authors
Leif Svalgaard
PublicationDate
2022-01-01 00:00:00
PublishedBy
Leif Svalgaard, Stanford University
Contacts
RolePersonStartDateStopDateNote
1.DataProducerspase://SMWG/Person/Leif.Svalgaard2024-07-09T00:00:00Leif Svalgaard passed away on 10.11.2025
2.MetadataContactspase://SMWG/Person/Olga.Y.Uritskaya
PriorIDs
spase://VSPO/Catalog/Svalgaard_SB_List
spase://VSPO/Catalog/Svalgaard/Sector.Boundary.Crossing
spase://NASA/Catalog/Svalgaard/Sector.Boundary.Crossing
AccessInformation
RepositoryID
spase://SMWG/Repository/WSO
AccessURL
Name
Sector boundary crossing list
URL
http://wso.stanford.edu/SB/SB.html
Format
Text
InstrumentIDs
spase://SMWG/Instrument/OMNI
PhenomenonType
SectorBoundaryCrossing
TimeSpan
StartDate
1926-01-29 00:00:00
StopDate
2024-07-09 00:00:00
Parameter #1
Name
- , +
Description

Polarity indicators

Support
SupportQuantity
Other
Parameter #2
Name
Date
Support
SupportQuantity
Temporal
Parameter #3
Name
The quantity of days before boundary crossing
Support
SupportQuantity
Other
Parameter #4
Name
The quantity of days after boundary crossing
Support
SupportQuantity
Other