Author-submitted data information
| ID | 504 |
| Title | Single- and two-station Pn amplitude data obtained from multiple data sources |
| Creator | Geng Yang |
| Subject | Seismic Pn waveforms |
| Publisher | Xiukuan Zhao |
| Description | To explore the crustal Pn-wave attenuation in the Iranian Plateau, we collected the vertical components waveforms of 594 crustal earthquakes occurring in and around the Iranian Plateau between October 2013 and September 2020 with magnitudes between 4.3 and 6.5 and performed a Pn attenuation tomography based on the single- and two-station Pn amplitude data. We sampled Pn waveforms in a 0.7 km/s group velocity window around the IASP91 first arrival time, calculated the Fourier spectra, and corrected for noises using the pre-P recordings. A signal-to-noise ratio (SNR) of 2.0 was used as a criterion for Pn data selection, and the amplitudes of the Pn signal were then obtained after removing the noise. The two-station Pn amplitude ratios were calculated for the roughly aligned triples of the event and station-pair. The resulting single-station amplitudes and two-station amplitude ratios were provided in this Data Repository. |
| Contributor | Ling Chen, Lian-Feng Zhao, Xiao-Bi Xie, Zhen-Xing Yao |
| Date | October 2013 - September 2020 |
| Type | The Pn amplitudes were sampled at 42 frequencies distributed log-evenly between 0.5 and 20.0 Hz, and therefore the spectral Pn amplitude data were provided in 42 separate files, with each file corresponding to one frequency indicated by the double-digit number in the name of the file. All Pn amplitude data, including single-station amplitudes and two-station amplitude ratios, were stored in the ASCII Sott.*.b.dat files. The correspondence between the frequency and the double-digit number can be looked up in the file ‘frequency.txt’. The sott.*.b.dat files consist of header lines and data lines. Zero value in 5th column indicates that the current line is the header line for single-station data, with the first two columns being the longitude and latitude of the recorded event, 3rd column being the number of lines of the following data and 4th column the sequence number of the recorded event. The header lines for single-station data are immediately followed by lines of single-station data, with the columns successively being the longitude and latitude of the recording station, Pn amplitude, geometric spreading term, ‘0’(meaningless) and sequence number of the recording station. Zero value in the 4th column indicates that the current line is the header line for two-station data, with the first two columns being the longitude and latitude of the recording station, 3rd column being the number of lines of the following data and 5th column the sequence number of the recording station. The header lines for two-station data are immediately followed by lines of two-station data, with the columns successively being the longitude and latitude of the in-between station, the inter-station ratio of Pn amplitude, geometric spreading term, ‘0’(meaningless) and sequence number of the in-between station. |
| Format | ASCII format with suffixes as .dat |
| URL | http://www.geophys.ac.cn/ArticleData/20230415PnQmodel.zip |
| DOI | 10.12197/2023GA005 |
| Source | |
| Language | eng |
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| Rights | Incorporated Research Institutions for Seismology Data Management Center, German Research Centre for Geoscience (GFZ), International Seismological Centre (ISC), International Federation of Digital Seismograph Networks (FDSN), China-Iran Geological and Geophysical Survey in the Iranian Plateau (CIGSIP), and Institute of Geology and Geophysics, Chinese Academy of Sciences. |