2.3.1 spase://ISWI/NumericalData/SipleExperiment/VLF/PT0.00004S Siple Experiment broadband VLF data https://doi.org/10.48322/44y4-4j02 2021-06-14T22:37:42Z The Siple Station experiment ran from 1973-1988, during which time a long horizontal ELF transmitter was erected over a thick ice sheet in Antarctica, described by Raghuram et al [1974]. The transmitter broadcast tones and frequency ramps to probe the magnetosphere’s excitation and response to injected ELF/VLF signals, including amplification and triggered emissions from wave-particle interactions, along with natural signals like whistlers and chorus. Receivers were setup at Siple station (75.93 deg. S, 84.25 deg. W geographic, corresponding to an invariant latitude of 60.4 deg. S, at L = 4.2), and near the geomagnetic conjugate point (first at Roberval, Quebec, Canada (48.52 deg. N, 72.23 deg. W) and in 1986 near Lake Mistissini, Canada (50.42 deg. N, 73.87 deg. W)). Complete results of the Siple station experiment are summarized in Helliwell [1988] but analysis work on this dataset continued well after the experiment ended. These data were originally stored on Ampex magnetic tapes, then converted over to a digitized format with some error correction applied as described by Li et al [2014]. The sampling rate of these data are 25 kHz. The filename naming convention is: XXYYMMDDHHMMSS_ACC.mat where XX - Station ID YY - Year MM - Month DD - Day HH - Hour MM - Minute SS - Second A - Sampling rate. 0 for 100 kHz sampled data (VLF), 1 for 1 MHz sampled data (LF), 2 for 25 kHz sampled data (Siple station experiment). CC - 00 for N/S channel, 01 for E/W channel DATA USAGE POLICY The data in the WALDO database have been collected by Stanford University, the Georgia Institute of Technology, and the University of Colorado Denver. Funding has been provided by the United States government under various basic science research grants over many years. To maximize the benefit of those investments, WALDO data are released without restriction, and can be freely analyzed or published. The curators of WALDO are Morris Cohen (Georgia Tech) and Mark Golkowski (CU-Denver). We request that the following acknowledgement be added in any publication using data from WALDO "VLF data are provided by the WALDO database (https://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." If extensive amounts of WALDO data are used in a publication, the curators request, but do not require, to be contacted to discuss the possibility of joint authorship, with the WALDO curators providing help analyzing and interpreting the large dataset. Helliwell, Robert A.; Katsufrakis, John P.; Li, J. D.; Spasojevic, M.; Harid, V.; Cohen, Morris B.; Golkowski, Mark; Inan, Umran S.. 2020-01-01T00:00:00 Worldwide Archive of Low frequency Data and Observations (WALDO) spase://SMWG/Person/Morris.Cohen ArchiveSpecialist Worldwide Archive of Low-Frequency Data and Observations (WALDO) https://waldo.world spase://SMWG/Repository/WALDO Worldwide Archive of Low-Frequency Data and Observations (WALDO) Broadband Data https://waldo.world/broadband-data/ MATLAB_4 VLF data are provided by the WALDO database (https://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. spase://SMWG/Instrument/SipleExperiment/VLF Waves.Passive 1973-01-01T00:00:00 1988-01-01T00:00:00 Earth.NearSurface Earth.NearSurface.Ionosphere start_year Temporal start_month Temporal start_day Temporal start_hour Temporal start_minute Temporal start_second Temporal latitude Positional longitude Positional altitude Positional Fs Sampling rate of the data, 25 kHz. PT0.000001S PT0.00001S Other gps_quality DataQuality adc_channel_number Other adc_sn Other adc_type Other antenna_bearings Orientation antenna_description InstrumentMode cal_factor Other computer_sn Other gps_sn Other hardware_description InstrumentMode is_broadband InstrumentMode station_description Other station_name Other VERSION Other data Electromagnetic ACMagneticField RadioFrequency 0.3 50 kHz