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ABOVE Level-2 Amplitude and Phase of VLF transmitter signals at Fort Smith (fsmi)

ResourceID
spase://CSA/NumericalData/GO-ABOVE/VLF/L2/FortSmith/PT1M

Description
Amplitude and phase for narrowband transmitters at ABOVE site Fort Smith, Manitoba, Lat: 59.99, Lon: -111.84. The Array for Broadband Observations of VLF/ELF Emissions (ABOVE) Level-2 CDF files of Amplitude, Phase and Bearing at 1 minute resolution for seven VLF transmitters as observed from each station of the ABOVE array. The VLF transmitters observed are: NDK (LaMoure, North Dakota, 46.37 N, 98.33 W, 25.2 kHz) NAA (Cutler, Maine, 44.64 N, 67.29 W, 24.0 kHz), NLK (Seattle, Washington, 48.20 N 121.92 W, 24.8 kHz) NWC (Exmouth, Western Australia, 21.82 S, 114.16 E, 19.8 kHz) NPM (Lualualei, Hawaii, 21.42 N, 158.15 W, 21.4 kHz) NRK (Keflavik, Iceland, 63.85 N, 22.45 W, 37.5 kHz) WWVB (Fort Collins, Colorado, 40.68 N, 105.05 W, 60 kHz) GO-ABOVE is a ground‐based array of VLF radio receivers located across Canada and run as a part of the Canadian Space Agency's Geospace Observatory (GO). The ABOVE instruments are situated in two north‐south chains in Alberta and Manitoba, through the region roughly from L = 3 through L = 8. The ABOVE instruments monitor electromagnetic waves in a frequency range from 100 Hz to 75 kHz, covering chorus and hiss emissions as well as U.S. Navy transmitters near 25 kHz. The absolute timing accuracy is 10 ns, from GPS.

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NumericalData

ResourceID
spase://CSA/NumericalData/GO-ABOVE/VLF/L2/FortSmith/PT1M
ResourceHeader
ResourceName
ABOVE Level-2 Amplitude and Phase of VLF transmitter signals at Fort Smith (fsmi)
ReleaseDate
2023-06-21 17:04:35
RevisionHistory
RevisionEvent
ReleaseDate
2022-10-25 11:50:20
Note
Added Name field to the AccessURL and modified RepositoryID
RevisionEvent
ReleaseDate
2022-12-27 11:50:20
Note
Added Parameter Key and modified Parameter Names and Descriptions
Description
Amplitude and phase for narrowband transmitters at ABOVE site Fort Smith, Manitoba, Lat: 59.99, Lon: -111.84. The Array for Broadband Observations of VLF/ELF Emissions (ABOVE) Level-2 CDF files of Amplitude, Phase and Bearing at 1 minute resolution for seven VLF transmitters as observed from each station of the ABOVE array. The VLF transmitters observed are: NDK (LaMoure, North Dakota, 46.37 N, 98.33 W, 25.2 kHz) NAA (Cutler, Maine, 44.64 N, 67.29 W, 24.0 kHz), NLK (Seattle, Washington, 48.20 N 121.92 W, 24.8 kHz) NWC (Exmouth, Western Australia, 21.82 S, 114.16 E, 19.8 kHz) NPM (Lualualei, Hawaii, 21.42 N, 158.15 W, 21.4 kHz) NRK (Keflavik, Iceland, 63.85 N, 22.45 W, 37.5 kHz) WWVB (Fort Collins, Colorado, 40.68 N, 105.05 W, 60 kHz) GO-ABOVE is a ground‐based array of VLF radio receivers located across Canada and run as a part of the Canadian Space Agency's Geospace Observatory (GO). The ABOVE instruments are situated in two north‐south chains in Alberta and Manitoba, through the region roughly from L = 3 through L = 8. The ABOVE instruments monitor electromagnetic waves in a frequency range from 100 Hz to 75 kHz, covering chorus and hiss emissions as well as U.S. Navy transmitters near 25 kHz. The absolute timing accuracy is 10 ns, from GPS.
Acknowledgement
Please include the following in any publications using this data: Infrastructure funding for ABOVE is provided by the Canada Foundation for Innovation and the province of Alberta. ABOVE data used in this work was collected with the support of the Canadian Space Agency Geospace Observatory (GO Canada) contribution initiative.
Contacts
Role Person StartDate StopDate Note
1. PrincipalInvestigator spase://SMWG/Person/C.M.Cully
2. MetadataContact spase://SMWG/Person/Leonard.N.Garcia

AccessInformation
RepositoryID
spase://CSA/Repository/UCalgary
AccessURL
Name
GO-ABOVE CDFs from University of Calgary Space Physics Data Page
URL
https://data.phys.ucalgary.ca/sort_by_instrument/vlf/GO-Canada_ABOVE/CDF/
Description
Directory tree to access Level-1 and Level-2 CDF data.
Format
CDF
InstrumentIDs
spase://SMWG/Instrument/FortSmith/VLF
MeasurementType
Waves.Passive
TemporalDescription
TimeSpan
StartDate
2014-08-13 18:00:00
StopDate
2019-10-01 05:45:00
Cadence
PT1M
SpectralRange
RadioFrequency
ObservedRegion
Earth.NearSurface.Ionosphere
Parameter #1
Name
Epoch
Support
SupportQuantity
Temporal
Parameter #2
Name
Phase ndk-fsmi
ParameterKey
abv_phase_fsmi_ndk
Description
Phase of VLF transmitter NDK observed at fsmi. Phases for upper (space) and lower (mark) frequencies have been combined. Phase is calculated along direction of maximum amplitude.
Units
radians
Field
Qualifier
PhaseAngle
FieldQuantity
Magnetic
Parameter #3
Name
Amplitude ndk-fsmi
ParameterKey
abv_amp_fsmi_ndk
Description
Amplitude of VLF transmitter NDK observed at fsmi. Amplitude is calculated separately for North-South and East-West antennas.
Units
ADC units
Field
Qualifier
Average
FieldQuantity
Magnetic
Parameter #4
Name
Bearing ndk-fsmi
ParameterKey
abv_bearing_fsmi_ndk
Description
Bearing to VLF transmitter NDK observed at fsmi. Bearing direction is based on amplitudes from the 2 antennas and always between 0 (N/S) and 90 (E/W) degrees.
Units
degrees
Field
Qualifier
DirectionAngle
FieldQuantity
Magnetic
Parameter #5
Name
Phase naa-fsmi
ParameterKey
abv_phase_fsmi_naa
Description
Phase of VLF transmitter NAA observed at fsmi. Phases for upper (space) and lower (mark) frequencies have been combined. Phase is calculated along direction of maximum amplitude.
Units
radians
Field
Qualifier
PhaseAngle
FieldQuantity
Magnetic
Parameter #6
Name
Amplitude naa-fsmi
ParameterKey
abv_amp_fsmi_naa
Description
Amplitude of VLF transmitter NAA observed at fsmi. Amplitude is calculated separately for North-South and East-West antennas.
Units
ADC units
Field
Qualifier
Average
FieldQuantity
Magnetic
Parameter #7
Name
Bearing naa-fsmi
ParameterKey
abv_bearing_fsmi_naa
Description
Bearing to VLF transmitter NAA observed at fsmi. Bearing direction is based on amplitudes from the 2 antennas and always between 0 (N/S) and 90 (E/W) degrees.
Units
degrees
Field
Qualifier
DirectionAngle
FieldQuantity
Magnetic
Parameter #8
Name
Phase nlk-fsmi
ParameterKey
abv_phase_fsmi_nlk
Description
Phase of VLF transmitter NLK observed at fsmi. Phases for upper (space) and lower (mark) frequencies have been combined. Phase is calculated along direction of maximum amplitude.
Units
radians
Field
Qualifier
PhaseAngle
FieldQuantity
Magnetic
Parameter #9
Name
Amplitude nlk-fsmi
ParameterKey
abv_amp_fsmi_nlk
Description
Amplitude of VLF transmitter NLK observed at fsmi. Amplitude is calculated separately for North-South and East-West antennas.
Units
ADC units
Field
Qualifier
Average
FieldQuantity
Magnetic
Parameter #10
Name
Bearing nlk-fsmi
ParameterKey
abv_bearing_fsmi_nlk
Description
Bearing to VLF transmitter NLK observed at fsmi. Bearing direction is based on amplitudes from the 2 antennas and always between 0 (N/S) and 90 (E/W) degrees.
Units
degrees
Field
Qualifier
DirectionAngle
FieldQuantity
Magnetic
Parameter #11
Name
Phase nwc-fsmi
ParameterKey
abv_phase_fsmi_nwc
Description
Phase of VLF transmitter NWC observed at fsmi. Phases for upper (space) and lower (mark) frequencies have been combined. Phase is calculated along direction of maximum amplitude.
Units
radians
Field
Qualifier
PhaseAngle
FieldQuantity
Magnetic
Parameter #12
Name
Amplitude nwc-fsmi
ParameterKey
abv_amp_fsmi_nwc
Description
Amplitude of VLF transmitter NWC observed at fsmi. Amplitude is calculated separately for North-South and East-West antennas.
Units
ADC units
Field
Qualifier
Average
FieldQuantity
Magnetic
Parameter #13
Name
Bearing nwc-fsmi
ParameterKey
abv_bearing_fsmi_nwc
Description
Bearing to VLF transmitter NWC observed at fsmi. Bearing direction is based on amplitudes from the 2 antennas and always between 0 (N/S) and 90 (E/W) degrees.
Units
degrees
Field
Qualifier
DirectionAngle
FieldQuantity
Magnetic
Parameter #14
Name
Phase npm-fsmi
ParameterKey
abv_phase_fsmi_npm
Description
Phase of VLF transmitter NPM observed at fsmi. Phases for upper (space) and lower (mark) frequencies have been combined. Phase is calculated along direction of maximum amplitude.
Units
radians
Field
Qualifier
PhaseAngle
FieldQuantity
Magnetic
Parameter #15
Name
Amplitude npm-fsmi
ParameterKey
abv_amp_fsmi_npm
Description
Amplitude of VLF transmitter NPM observed at fsmi. Amplitude is calculated separately for North-South and East-West antennas.
Units
ADC units
Field
Qualifier
Average
FieldQuantity
Magnetic
Parameter #16
Name
Bearing npm-fsmi
ParameterKey
abv_bearing_fsmi_npm
Description
Bearing to VLF transmitter NPM observed at fsmi. Bearing direction is based on amplitudes from the 2 antennas and always between 0 (N/S) and 90 (E/W) degrees.
Units
degrees
Field
Qualifier
DirectionAngle
FieldQuantity
Magnetic
Parameter #17
Name
Phase nrk-fsmi
ParameterKey
abv_phase_fsmi_nrk
Description
Phase of VLF transmitter NRK observed at fsmi. Phases for upper (space) and lower (mark) frequencies have been combined. Phase is calculated along direction of maximum amplitude.
Units
radians
Field
Qualifier
PhaseAngle
FieldQuantity
Magnetic
Parameter #18
Name
Amplitude nrk-fsmi
ParameterKey
abv_amp_fsmi_nrk
Description
Amplitude of VLF transmitter NRK observed at fsmi. Amplitude is calculated separately for North-South and East-West antennas.
Units
ADC units
Field
Qualifier
Average
FieldQuantity
Magnetic
Parameter #19
Name
Bearing nrk-fsmi
ParameterKey
abv_bearing_fsmi_nrk
Description
Bearing to VLF transmitter NRK observed at fsmi. Bearing direction is based on amplitudes from the 2 antennas and always between 0 (N/S) and 90 (E/W) degrees.
Units
degrees
Field
Qualifier
DirectionAngle
FieldQuantity
Magnetic
Parameter #20
Name
Phase wwvb-fsmi
ParameterKey
abv_phase_fsmi_wwvb
Description
Phase of VLF transmitter WWVB observed at fsmi. Phases for upper (space) and lower (mark) frequencies have been combined. Phase is calculated along direction of maximum amplitude.
Units
radians
Field
Qualifier
PhaseAngle
FieldQuantity
Magnetic
Parameter #21
Name
Amplitude wwvb-fsmi
ParameterKey
abv_amp_fsmi_wwvb
Description
Amplitude of VLF transmitter WWVB observed at fsmi. Amplitude is calculated separately for North-South and East-West antennas.
Units
ADC units
Field
Qualifier
Average
FieldQuantity
Magnetic
Parameter #22
Name
Bearing wwvb-fsmi
ParameterKey
abv_bearing_fsmi_wwvb
Description
Bearing to VLF transmitter WWVB observed at fsmi. Bearing direction is based on amplitudes from the 2 antennas and always between 0 (N/S) and 90 (E/W) degrees.
Units
degrees
Field
Qualifier
DirectionAngle
FieldQuantity
Magnetic
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Last Updated: 2023-06-21