{ "Spase": { "xmlns": "http://www.spase-group.org/data/schema", "xmlns:xsi": "http://www.w3.org/2001/XMLSchema-instance", "xsi:schemaLocation": "http://www.spase-group.org/data/schema http://www.spase-group.org/data/schema/spase-2_3_1.xsd", "Version": "2.3.1", "NumericalData": { "ResourceID": "spase://GBO/NumericalData/AWESOME/LF/PT0.000001S", "ResourceHeader": { "ResourceName": "AWESOME receiver system broadband VLF/LF data", "DOI": "https://doi.org/10.48322/fwte-dv13", "ReleaseDate": "2020-09-28T21:24:52Z", "Description": "\n The Low Frequency Atmospheric Weather Electromagnetic\n System for Observation, Modeling, and Education, or LF AWESOME is a\n high-sensitivity radio receiver for the frequency band 0.5-470 kHz.\n The receiver is an upgraded version of the VLF AWESOME, which\n provided high sensitivity broadband radio\n measurements of natural lightning emissions, transmitting beacons,\n and radio emissions from the near-Earth space environment. The\n expanded capabilities of LF AWESOME allow detection of radio\n atmospherics from lightning strokes at \n global distances and multiple traverses a round the world. It also\n allows monitoring of transmitting beacons in the LF/MF band at\n thousands of km distance.\n \n Most of the data is collected on two air-core loop\n antennas, oriented orthogonal, to collect the two horizontal\n components of the magnetic field. The north-south, or N/S antenna\n is sensitive mostly to waves arriving from the north of from the\n south direction, meaning it picks up the magnetic field component\n in the east-west direction. The other antenna is the east-west\n antenna, which is the opposite. \n\n Broadband data contain direct samples of the receiver output, usually\n at 100 kHz or 1 MHz sampling frequency. These files essentially\n contain everything that the receiver records, entirely\n uncompressed. The files are very large, for instance just one\n minute of VLF data will produce a ~12 MB file for each antenna\n channel. This adds up to 35 GB per day if you have two antenna\n channels.", "Acknowledgement": "\n DATA USAGE POLICY\nThe data in the WALDO database have been collected by Stanford\nUniversity, the Georgia Institute of Technology, and the University of\nColorado Denver. Funding has been provided by the United States\ngovernment under various basic science research grants over many\nyears. \n\nTo maximize the benefit of those investments, WALDO data are released\nwithout restriction, and can be freely analyzed or published. \n\nThe curators of WALDO are Morris Cohen (Georgia Tech) and Mark\nGolkowski (CU-Denver). We request that the following acknowledgement\nbe added in any publication using data from WALDO \n\n\"VLF data are provided by the WALDO database (http://waldo.world),\noperated jointly by the Georgia Institute of Technology, and the\nUniversity of Colorado Denver, using data collected from those\ninstitutions as well as Stanford University, and has been supported by\nvarious US government grants from the NSF, NASA, and the Department of\nDefense.\" \n\nIf extensive amounts of WALDO data are used in a publication, the\ncurators request, but do not require, to be contacted to discuss the\npossibility of joint authorship, with the WALDO curators providing\nhelp analyzing and interpreting the large dataset. \n ", "PublicationInfo": { "Authors": "Morris B. Cohen", "PublicationDate": "2020-01-01T00:00:00Z", "PublishedBy": "Worldwide Archive of Low frequency Data and Observations (WALDO)" }, "Contact": { "PersonID": "spase://SMWG/Person/Morris.Cohen", "Role": "ArchiveSpecialist" }, "InformationURL": { "Name": "Worldwide Archive of Low-Frequency Data and Observations (WALDO)", "URL": "http://waldo.world" } }, "AccessInformation": { "RepositoryID": "spase://SMWG/Repository/WALDO", "AccessURL": { "Name": "Worldwide Archive of Low-Frequency Data and Observations (WALDO) Bbroadband Data", "URL": "http://waldo.world/broadband-data/" }, "Format": "MATLAB_4", "Acknowledgement": "VLF data are provided by the WALDO database (http://waldo.world), operated jointly by the Georgia Institute of Technology, and the University of Colorado Denver, using data collected from those institutions as well as Stanford University, and has been supported by various US government grants from the NSF, NASA, and the Department of Defense." }, "InstrumentID": "spase://SMWG/Instrument/AWESOME/LF", "MeasurementType": "Waves.Passive", "TemporalDescription": { "TimeSpan": { "StartDate": "2012-05-09T17:00:00", "RelativeStopDate": "-P3Y" } }, "ObservedRegion": [ "Earth.NearSurface", "Earth.NearSurface.Ionosphere" ], "Parameter": [ { "Name": "start_year", "Support": { "SupportQuantity": "Temporal" } }, { "Name": "start_month", "Support": { "SupportQuantity": "Temporal" } }, { "Name": "start_day", "Support": { "SupportQuantity": "Temporal" } }, { "Name": "start_hour", "Support": { "SupportQuantity": "Temporal" } }, { "Name": "start_minute", "Support": { "SupportQuantity": "Temporal" } }, { "Name": "start_second", "Support": { "SupportQuantity": "Temporal" } }, { "Name": "latitude", "Support": { "SupportQuantity": "Positional" } }, { "Name": "longitude", "Support": { "SupportQuantity": "Positional" } }, { "Name": "altitude", "Support": { "SupportQuantity": "Positional" } }, { "Name": "Fs", "Description": "Sampling rate of the data, usually 100 kHz or 1 MHz. ", "CadenceMin": "PT0.000001S", "CadenceMax": "PT0.00001S", "Support": { "SupportQuantity": "Other" } }, { "Name": "gps_quality", "Support": { "SupportQuantity": "DataQuality" } }, { "Name": "adc_channel_number", "Support": { "SupportQuantity": "Other" } }, { "Name": "adc_sn", "Support": { "SupportQuantity": "Other" } }, { "Name": "adc_type", "Support": { "SupportQuantity": "Other" } }, { "Name": "antenna_bearings", "Support": { "SupportQuantity": "Orientation" } }, { "Name": "antenna_description", "Support": { "SupportQuantity": "InstrumentMode" } }, { "Name": "cal_factor", "Support": { "SupportQuantity": "Other" } }, { "Name": "computer_sn", "Support": { "SupportQuantity": "Other" } }, { "Name": "gps_sn", "Support": { "SupportQuantity": "Other" } }, { "Name": "hardware_description", "Support": { "SupportQuantity": "InstrumentMode" } }, { "Name": "is_broadband", "Support": { "SupportQuantity": "InstrumentMode" } }, { "Name": "station_description", "Support": { "SupportQuantity": "Other" } }, { "Name": "station_name", "Support": { "SupportQuantity": "Other" } }, { "Name": "VERSION", "Support": { "SupportQuantity": "Other" } }, { "Name": "data", "Wave": { "WaveType": "Electromagnetic", "WaveQuantity": "ACMagneticField", "FrequencyRange": { "SpectralRange": "RadioFrequency", "Low": "0.3", "High": "470", "Units": "kHz" } } } ] } } }