spase-metadata.org SPASE landing pages.

NASA THEMIS GBO Yellow Knife Station

ResourceID
spase://SMWG/Observatory/THEMIS/Ground/UCLA-GBO/YKNF

Description

Yellowknife (YKNF) station is located in Yellowknife, NT, Canada. YKNF is part of the UCLA GBO Network.

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Station CharacteristicsValueUnits
Magnetic Latitude69.37degrees
Magnetic Longitude302.64degrees
Magnetic Declination20.71degrees
UT of Magnetic Midnight08:21HH:MM

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Magnetic coordinates obtained by calculation using the CGM online calculator with IGRF 2008 at altitude of 0 km. Magnetic declination obtained using CGM online calculator with IGRF 2007.

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Details

Version:2.7.1

Observatory

ResourceID
spase://SMWG/Observatory/THEMIS/Ground/UCLA-GBO/YKNF
ResourceHeader
ResourceName
NASA THEMIS GBO Yellow Knife Station
AlternateName
YKNF
ReleaseDate
2026-07-20 16:25:30Z
RevisionHistory
RevisionEvent
ReleaseDate
2022-02-20 12:34:56.789
Note
THEMIS Ground Observatories: Delete obsolete www-spc.igpp.ucla.edu Information URL, Resource Header Description reformated, Replace spurious YKNF information present in the NRSQ description. Metadata submitted by L.F. Bargatze on 2022-02-14, reviewed by LFB
RevisionEvent
ReleaseDate
2026-02-06 12:34:56.789
Note
Revised Information UTL. JMW
RevisionEvent
ReleaseDate
2026-07-20 16:25:30Z
Note
Added HelioData InformationURL, Updated to SPASE Version 2.7.1. JWL
Description

Yellowknife (YKNF) station is located in Yellowknife, NT, Canada. YKNF is part of the UCLA GBO Network.

+--------------------------------------------+

Station CharacteristicsValueUnits
Magnetic Latitude69.37degrees
Magnetic Longitude302.64degrees
Magnetic Declination20.71degrees
UT of Magnetic Midnight08:21HH:MM

+--------------------------------------------+

Magnetic coordinates obtained by calculation using the CGM online calculator with IGRF 2008 at altitude of 0 km. Magnetic declination obtained using CGM online calculator with IGRF 2007.

Acknowledgement
We acknowledge NASA contract NAS5-02099 and V. Angelopoulos for use of data from the THEMIS Mission. Specifically: S. Mende and C. T. Russell for use of the GMAG data.
Contacts
RolePersonStartDateStopDateNote
1.PrincipalInvestigatorspase://SMWG/Person/Vassilis.Angelopoulos
2.CoInvestigatorspase://SMWG/Person/Christopher.T.Russell
3.CoInvestigatorspase://SMWG/Person/Stephen.B.Mende
4.MetadataContactspase://SMWG/Person/Lee.Frost.Bargatze
5.MetadataContactspase://SMWG/Person/Lee.Frost.Bargatze
InformationURL
Name
THEMIS Ground Based Observatory System Design
URL
https://link.springer.com/article/10.1007/s11214-007-9294-z
Description

Harris et al., Dec. 2007; In depth description of GBO design.

InformationURL
Name
THEMIS Web Site
URL
http://themis.ssl.berkeley.edu/instrument_gmags.shtml
Description

Description of GMAGS on THEMIS web site

InformationURL
Name
HelioData
URL
https://helio.data.nasa.gov/mission/THEMIS_Ground_UCLA-GBO_YKNF
Description

The HelioData mission page provides an overview of the mission and more, such as all SPASE dataset records associated with it.

Association
AssociationID
spase://SMWG/Observatory/WDC/Yellowknife
AssociationType
Other
PriorIDs
spase://SMWG/Observatory/THEMIS-Ground/UCLA-GBO/YKNF
ObservatoryGroupID
spase://SMWG/Observatory/THEMIS/Ground/UCLA-GBO
Location
ObservatoryRegion
Earth.Surface
CoordinateSystemName
WGS84
Latitude
62.52
Longitude
245.96
OperatingSpan
StartDate
2008-03-11 00:00:00
Note
Start Date taken as the start of the day, that ia 00:00:00 UT, for the first CDF data file under the https://spdf.gsfc.nasa.gov/pub/data/themis/thg/l2/mag/ data tree.