2.5.0 spase://CSA/NumericalData/GO-ABOVE/VLF/L2/IslandLake/PT1M ABOVE Level-2 Amplitude and Phase of VLF transmitter signals at Island Lake (isll) 2023-06-21T17:04:35 2022-10-25T11:50:20 Added Name field to the AccessURL and modified RepositoryID 2022-12-27T11:50:20 Added Parameter Key and modified Parameter Names and Descriptions Amplitude and phase for narrowband transmitters at ABOVE site Island Lake, Manitoba, Lat: 53.85, Lon: -94.66. 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. 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. spase://SMWG/Person/C.M.Cully PrincipalInvestigator spase://SMWG/Person/Leonard.N.Garcia MetadataContact spase://CSA/Repository/UCalgary GO-ABOVE CDFs from University of Calgary Space Physics Data Page https://data.phys.ucalgary.ca/sort_by_instrument/vlf/GO-Canada_ABOVE/CDF/ Directory tree to access Level-1 and Level-2 CDF data. CDF spase://SMWG/Instrument/IslandLake/VLF Waves.Passive 2014-08-13T18:00:00 2019-10-01T05:45:00 PT1M RadioFrequency Earth.NearSurface.Ionosphere Epoch Temporal Phase ndk-isll abv_phase_isll_ndk Phase of VLF transmitter NDK observed at isll. Phases for upper (space) and lower (mark) frequencies have been combined. Phase is calculated along direction of maximum amplitude. radians PhaseAngle Magnetic Amplitude ndk-isll abv_amp_isll_ndk Amplitude of VLF transmitter NDK observed at isll. Amplitude is calculated separately for North-South and East-West antennas. ADC units Average Magnetic Bearing ndk-isll abv_bearing_isll_ndk Bearing to VLF transmitter NDK observed at isll. Bearing direction is based on amplitudes from the 2 antennas and always between 0 (N/S) and 90 (E/W) degrees. degrees DirectionAngle Magnetic Phase naa-isll abv_phase_isll_naa Phase of VLF transmitter NAA observed at isll. Phases for upper (space) and lower (mark) frequencies have been combined. Phase is calculated along direction of maximum amplitude. radians PhaseAngle Magnetic Amplitude naa-isll abv_amp_isll_naa Amplitude of VLF transmitter NAA observed at isll. Amplitude is calculated separately for North-South and East-West antennas. ADC units Average Magnetic Bearing naa-isll abv_bearing_isll_naa Bearing to VLF transmitter NAA observed at isll. Bearing direction is based on amplitudes from the 2 antennas and always between 0 (N/S) and 90 (E/W) degrees. degrees DirectionAngle Magnetic Phase nlk-isll abv_phase_isll_nlk Phase of VLF transmitter NLK observed at isll. Phases for upper (space) and lower (mark) frequencies have been combined. Phase is calculated along direction of maximum amplitude. radians PhaseAngle Magnetic Amplitude nlk-isll abv_amp_isll_nlk Amplitude of VLF transmitter NLK observed at isll. Amplitude is calculated separately for North-South and East-West antennas. ADC units Average Magnetic Bearing nlk-isll abv_bearing_isll_nlk Bearing to VLF transmitter NLK observed at isll. Bearing direction is based on amplitudes from the 2 antennas and always between 0 (N/S) and 90 (E/W) degrees. degrees DirectionAngle Magnetic Phase nwc-isll abv_phase_isll_nwc Phase of VLF transmitter NWC observed at isll. Phases for upper (space) and lower (mark) frequencies have been combined. Phase is calculated along direction of maximum amplitude. radians PhaseAngle Magnetic Amplitude nwc-isll abv_amp_isll_nwc Amplitude of VLF transmitter NWC observed at isll. Amplitude is calculated separately for North-South and East-West antennas. ADC units Average Magnetic Bearing nwc-isll abv_bearing_isll_nwc Bearing to VLF transmitter NWC observed at isll. Bearing direction is based on amplitudes from the 2 antennas and always between 0 (N/S) and 90 (E/W) degrees. degrees DirectionAngle Magnetic Phase npm-isll abv_phase_isll_npm Phase of VLF transmitter NPM observed at isll. Phases for upper (space) and lower (mark) frequencies have been combined. Phase is calculated along direction of maximum amplitude. radians PhaseAngle Magnetic Amplitude npm-isll abv_amp_isll_npm Amplitude of VLF transmitter NPM observed at isll. Amplitude is calculated separately for North-South and East-West antennas. ADC units Average Magnetic Bearing npm-isll abv_bearing_isll_npm Bearing to VLF transmitter NPM observed at isll. Bearing direction is based on amplitudes from the 2 antennas and always between 0 (N/S) and 90 (E/W) degrees. degrees DirectionAngle Magnetic Phase nrk-isll abv_phase_isll_nrk Phase of VLF transmitter NRK observed at isll. Phases for upper (space) and lower (mark) frequencies have been combined. Phase is calculated along direction of maximum amplitude. radians PhaseAngle Magnetic Amplitude nrk-isll abv_amp_isll_nrk Amplitude of VLF transmitter NRK observed at isll. Amplitude is calculated separately for North-South and East-West antennas. ADC units Average Magnetic Bearing nrk-isll abv_bearing_isll_nrk Bearing to VLF transmitter NRK observed at isll. Bearing direction is based on amplitudes from the 2 antennas and always between 0 (N/S) and 90 (E/W) degrees. degrees DirectionAngle Magnetic Phase wwvb-isll abv_phase_isll_wwvb Phase of VLF transmitter WWVB observed at isll. Phases for upper (space) and lower (mark) frequencies have been combined. Phase is calculated along direction of maximum amplitude. radians PhaseAngle Magnetic Amplitude wwvb-isll abv_amp_isll_wwvb Amplitude of VLF transmitter WWVB observed at isll. Amplitude is calculated separately for North-South and East-West antennas. ADC units Average Magnetic Bearing wwvb-isll abv_bearing_isll_wwvb Bearing to VLF transmitter WWVB observed at isll. Bearing direction is based on amplitudes from the 2 antennas and always between 0 (N/S) and 90 (E/W) degrees. degrees DirectionAngle Magnetic