Data for the seismological studies on the 2017 MW5.5 Pohang earthquake

<strong># written by J.-U. Woo</strong><br> Data includes [1] cut seismogram provided from the Korea Meteorological Administration (KMA), Korea Institute of Geoscience and Mineral Resources (KIGAM), and Korea Hydro &amp; Nuclear Power (KHNP), [2] an example of waveform cross-correlation, [3] phase arrival times, [4] cross-correlation measurements, and [5-7] three earthquake catalogs (1-3). <strong>Suggested citation:</strong><br> <strong>1</strong>. J.‐U. Woo, M. Kim, D.‐H. Sheen, T.‐S. Kang, J. Rhie, F. Grigoli, W.L. Ellsworth, D. Giardini, 2019, An In‐Depth Seismological Analysis Revealing a Causal Link Between the 2017 M_W 5.5 Pohang Earthquake and EGS Project, JGR solid earth, doi:10.1029/2019JB018368. <strong>Further suggested citations:</strong> <strong>2</strong>. W.L. Ellsworth, D. Giardini, J. Townend, S. Ge, and T. Shimamoto, 2019, Triggering of the Pohang, Korea, Earthquake (Mw 5.5) by Enhanced Geothermal System Stimulation. Seismological Research Letters, 90(5), 1844-1858. <strong>3</strong>. K.-K. Lee, W.L. Ellsworth, D. Giardini, J. Townend, S. Ge, T. Shimamoto, I.-W. Yeo, T.-S. Kang, J. Rhie, D.-H. Sheen, C. Chang, J.-U. Woo, C. Langenbruch, 2019, Managing injection-induced seismic risks. Science, 364(6442), 730-732. <strong>4</strong>. C. Langenbruch, W. L. Ellsworth, J.-U. Woo and D. J. Wald, 2020, Value at Induced Risk: Injection-induced seismic risk from low-probability, high-impact events. Geophysical Research Letters, 47, e2019GL085878. http://doi.org/10.1029/2019GL085878. <strong>Descriptions:</strong><br> [1] Cut seismogram ("wf_cut.gz"): Each sac file is named as "(station name).(event ID of catalog1).(component; E/N/Z).sac".<br> - Zero-padding may be applied to some waveforms.<br> [2] An example of waveform cross-correlation ("wf_cc.gz"): See the README.txt in "wf_cc.gz" for details<br> [3] Phase arrival times ("phphase.txt"):<br> - First column: event ID of catalog1<br> - Second column: station name<br> - Third column: yyyymmddHHMMDD (year, month, day of month, hour, minute)<br> - Fourth and fifth columns: P-wave arrivals in second (N/A: non available)<br> - Sixth and seventh columns: S-wave arrivals in second (N/A: non available)<br> [4] Waveform cross-correlation data ("phcc.txt"):<br> - First column: event 1 ID<br> - Second column: event 2 ID<br> - Third column: station name<br> - Fourth column: arrival time difference between event 1 and event2. The arrival time differences should be added to the arrivals of the event 2 to make maximum cross-correlation coefficients. See the details in [2].<br> - Fifth column: waveform cross-correlation coefficient after alignment<br> - Sixth column: two letters for component (E/N/Z) &amp; phase(P/S), repectively<br> [5] Earthquake catalog 1 ("catalog1.txt") for initial locations<br> [6] Earthquake catalog 2 ("catalog2.txt") for final locations<br> [7] Earthquake catalog 3 ("catalog3.txt") regarding to the determined focal mechanisms