This PANERU_readme20241111.txt file was generated on 20241111 by Kaylee Alexander ------------------- GENERAL INFORMATION ------------------- 1. Title of Dataset: Current Densities and Geoelectric Fields Calculated from a Brute Force FDTD Model and FDTD-Calculated Based Partial Transfer Function Method 2. Author Information Principal Investigator Contact Information Name: Prashanna Sharma Paneru Institution: Department of Electrical and Computer Engineering, University of Utah Address: Merrill Engineering Building, Room 1222 50 S Central Campus Dr., Salt Lake City, UT 84112 Email: u1330933@umail.utah.edu ORCID: 0000-0001-7931-5635 3. Date of data collection (single date, range, approximate date) 20240101 to 20241108 4. Geographic location of data collection (where was data collected?): Salt Lake City, Utah, USA 5. Information about funding sources that supported the collection of the data: Project funded by NASA under proposal numbers 19-LWS19_2-0013, 80NSSC20K1779. -------------------------- SHARING/ACCESS INFORMATION -------------------------- 1. Licenses/restrictions placed on the data: Public Domain – This data is free of copyright restrictions (e.g. government sponsored data). 2. Links to publications that cite or use the data: N/A 3. Links to other publicly accessible locations of the data: N/A 4. Links/relationships to ancillary data sets: N/A 5. Was data derived from another source? Yes If yes, list source(s): Kelbert, A., Bedrosian, P. A. & Murphy, B. S. The first 3D conductivity model of the contiguous United States: Reflections on geologic structure and application to induction hazards in Geomagnetically Induced Currents from the Sun to the Power Grid 127–151 (wiley, 2019). doi:10.1002/9781119434412.ch8. https://supermag.jhuapl.edu/line/?fidelity=low&start=1989-03-13T00%3A00%3A00.000Z&interval=20%3A00&tab=plot&stations=NEW 6. Recommended citation for the data: Prashanna Sharma Paneru. 2024. "Current Densities and Geoelectric Fields Calculated from a Brute Force FDTD Model and FDTD-Calculated Based Partial Transfer Function Method." The Hive: University of Utah Research Data Repository. https://doi.org/10.7278/S5d-ev5n-d1v5. --------------------- DATA & FILE OVERVIEW --------------------- 1. File List A. Filename: 20241111_ComparisionExEy_Prashanna.txt Short description: Comparison of the geoelectric field results obtained using the partial transfer function approach vs. a much longer brute-force FDTD simulation. B. Filename: 20241111_CurrentDensities_Prashanna.txt Short description: Source values Jx, Jx(After HPF), Jy, and Jy(After HPF). C. Filename: 20241111_DensityComponentsHPF_Prashanna.txt Short description: Ionospheric current densities calculated after passing it through a HPF and implementing ten minutes of a cubic polynomial at the beginning and end of the waveform to achieve a smooth onset and termination. D. Filename: 20241111_FDTD-ImpulseResponses_Prashanna.txt Short description: Values of FDTD-calculated Impulse responses(Ex component and Ey component) and their Spectrums value too. E. Filename: 20241111_GeoelectricField-8hrs_Prashanna.txt Short description: Geoelectric fields (Ex and Ey) calculated using the eight hours of current densities. F. Filename: 20241111_InterpolatedSmooth_Prashanna.txt Short description: Values such as Jx Time Waveform, Jx Spectrum, Jy Time waveform, and Jy Spectrum. 2. Relationship between files: These datasets were used to generate figures in Prashanna S. Paneru, Jamesina J. Simpson, and Mark B. Moldwin, "A methodology for Generating Hours of Geoelectric Field Data from an FDTD-Calculated Partial Transfer Function." (Publication forthcoming). 20241111_ComparisionExEy_Prashanna.txt is the data for figure 7; 20241111_CurrentDensities_Prashanna.txt is the data for figure 4; 20241111_DensityComponentsHPF_Prashanna.txt is the data for figure 8; 20241111_FDTD-ImpulseResponses_Prashanna.txt is the data for figure 6; 20241111_GeoelectricField-8hrs_Prashanna.txt is the data for figure 9; and 20241111_InterpolatedSmooth_Prashanna.txt is the data for figure 5. 3. Additional related data collected that was not included in the current data package: N/A 4. Are there multiple versions of the dataset? No -------------------------- METHODOLOGICAL INFORMATION -------------------------- 1. Description of methods used for collection/generation of data: The simulation data was obtained from the FDTD simulations. The ground conductivity data is obtained from Anna Kelbert from USGS and the magnetometer stations data are obtained from SUPERMAG website. 2. Methods for processing the data: The data obtained from simulations are post-processed using MATLAB (MATLABR2021a) for plotting the figures in the paper. 3. Instrument- or software-specific information needed to interpret the data: N/A - Data are provided in a nonproprietary format. 4. Standards and calibration information, if appropriate: N/A 5. Environmental/experimental conditions: N/A 6. Describe any quality-assurance procedures performed on the data: N/A 7. People involved with sample collection, processing, analysis and/or submission: N/A ----------------------------------------- DATA-SPECIFIC INFORMATION FOR: 20241111_ComparisionExEy_Prashanna.txt ----------------------------------------- 1. Number of variables: 4 2. Number of cases/rows: 78 3. Variable List A. Name: Ex New Approach Description: The electrical field components in x direction calculated by the new FDTD-calculated partial transfer function method. B. Name: Ex Brute Force Description: The electrical field components in x direction calculated by the Brute force FDTD model. C. Name: Ey New Approach Description: The electrical field components in y direction calculated by the new FDTD-calculated partial transfer function method. D. Name: Ey Brute Force Description: The electrical field components in y direction calculated by the Brute force FDTD model. 4. Missing data codes: N/A 5. Specialized formats of other abbreviations used: N/A ----------------------------------------- DATA-SPECIFIC INFORMATION FOR: 20241111_CurrentDensities_Prashanna.txt ----------------------------------------- 1. Number of variables: 4 2. Number of cases/rows: 60 3. Variable List A. Name: Jx Description: The current densities in the x direction.        B. Name: Jx(After HPF) Description: The current densities in the x direction, which is obtained after passing it to a high pass filter. C. Name: Jy Description: The current densities in the y direction. C. Name: Jy(After HPF) Description: The current densities in the y direction, which are obtained after passing it to a high pass filter. 4. Missing data codes: N/A 5. Specialized formats of other abbreviations used: N/A ----------------------------------------- DATA-SPECIFIC INFORMATION FOR: 20241111_DensityComponentsHPF_Prashanna.txt ----------------------------------------- 1. Number of variables: 2 2. Number of cases/rows: 500 3. Variable List A. Name: Jx Description: The current densities in the x direction. B. Name: Jy Description: The current densities in the y direction. 4. Missing data codes: N/A 5. Specialized formats of other abbreviations used: N/A ----------------------------------------- DATA-SPECIFIC INFORMATION FOR: 20241111_FDTD-ImpulseResponses_Prashanna.txt ----------------------------------------- 1. Number of variables: 4 2. Number of cases/rows: 78 3. Variable List A. Name: FDTD-calculated Impulse responses Ex component Description: FDTD-calculated Impulse responses electric field components in the x direction. B. Name: FDTD-calculated Impulse responses Ey component Description: FDTD-calculated Impulse responses electric field components in the y direction. C. Name: Spectrums Ex component Description: The frequency domain spectrum of the Ex component. D. Name: Spectrums Ey component Description: The frequency domain spectrum of the Ey component. 4. Missing data codes: N/A 5. Specialized formats of other abbreviations used: N/A ----------------------------------------- DATA-SPECIFIC INFORMATION FOR: 20241111_GeoelectricField-8hrs_Prashanna.txt ----------------------------------------- 1. Number of variables: 2 2. Number of cases/rows: 500 3. Variable List A. Name: Ex Description: Electric field component in the x direction from the partial transfer function method.        B. Name: Ey Description: Electric field component in the y direction from the partial transfer function method. 4. Missing data codes: N/A 5. Specialized formats of other abbreviations used: N/A ----------------------------------------- DATA-SPECIFIC INFORMATION FOR: 20241111_InterpolatedSmooth_Prashanna.txt ----------------------------------------- 1. Number of variables: 4 2. Number of cases/rows: 78 3. Variable List A. Name: Jx Time Waveform Description: The current densities in the x direction. B. Name: Jx Spectrum Description: The frequency domain spectrum of the Jx component. C. Name: Jy Time Waveform Description: The current densities in the y direction. D. Name: Jy Spectrum Description: The frequency domain spectrum of the Jy component. 4. Missing data codes: N/A 5. Specialized formats of other abbreviations used: N/A