Author-submitted data information
| ID | 621 |
| Title | Receiver Functions Data for Crustal Structure Investigation of Fossil Suture Zones in the eastern Central Asian Orogenic Belt |
| Creator | Dong-Xue Pan |
| Subject | Seismic receiver function waveform data; Seismic waveform data |
| Publisher | Xiukuan Zhao |
| Description | Aiming at the tectonic characteristics of fossil suture zones and the tectonic evolution of the Paleo-Asian Ocean in the eastern Central Asian Orogenic Belt (CAOB), we integrate seismic data from new dense short-period stations with five broadband stations in the eastern CAOB to conduct P-Receiver Function (RF) study. The seismic stations belong to two sections: (1) 420 short-period seismic stations, with an inter-station spacing of approximately 600 m, deployed across the southwestern segment of the CAOB between July 28 and August 28, 2021, (2) four NECESSArray broadband stations and the Xilinhot permanent station, positioned in proximity to the short-period array. These broadband observations were collected from September 2009 to August 2011 and from January 2011 to February 2016, respectively. For conventional Receiver Function (con-RF) analysis of all stations, we first acquired the teleseismic waveforms from earthquakes with magnitudes greater than 5.0 and epicentral distances between 30° and 90°. The data were band-pass filtered between 0.05 and 5.0 Hz after removing the instrument response, mean, trend, and taper. The three-component waveforms were rotated to radial, transverse, and vertical (R, T, Z) components, windowed around the theoretical first P-arrivals (-5 sec to 50 sec for short-period stations and -10 sec to -50 sec for broadband stations). P-wave RFs with a Gaussian coefficient of 3.5 were derived using time-domain iterative deconvolution. Following preprocessing and manual screening, a total of 3731 high-quality RFs from short-period dense stations, 1636 from the Xilinhot permanent station, and 1407 from the NECESSArray stations were obtained. The pre-processing of Coherent Receiver Function (CRF) is identical to that of conventional RF, except for the deconvolution process used to obtain the RFs. But the data were band-pass filtered between 0.1 and 1.0 Hz after removing the instrument response. The signal-to-noise ratio (SNR) is calculated by selecting the seis-mic data 15 s before and after the first P-wave arrival, and the data with R and Z component SNR higher than 2.0 are selected for deconvolution processing. A moving window with an interval of 6 km (subarray size 10) was used. For each sub-array, 50 CPUs were employed to run the McMC inversion, sampling the model space simultaneously and independently. Each CPU performed 15,000 iterations, with the first 5,000 iter-ations updating the model and the iterative results were retained every 10th in the last 10,000 itera-tions. The best inversion results were ultimately selected to calculate the receiver functions for the 5 seconds before and 10 seconds after the P-wave arrival. |
| Contributor | Xin Wang, Qi-Fu Chen, Wen-Liang Xu |
| Date | Dense short-period array between July 28 and August 28, 2021; Xilinhot permanent broadband station (XLT) between January 2011 and February 2016; Four NECESSArray mobile broadband stations between September 2009 and August 2011. |
| Type | The conventional Receiver Functions of dense short-period stations are stored with a sampling rate of 25 Hz and a length of 55 sec (-5 sec to 50 sec); The Coherent Receiver Functions (CRF) of dense short-period stations are stored with a sampling rate of 50 Hz and a length of 15 sec (-5 sec to 10 sec); The tra-RFs of broadband stations are stored with a sampling rate of 20 Hz and a length of 60 sec (-10 sec to 50 sec); The time zero refers to the direct P-wave; The seismic waveform data used for CRF are stored with a sampling rate of 50 Hz and a length of 250 sec (-50 sec to 200 sec). |
| Format | *_R.sac or *BHR.saci for radial RFs, *_T.sac or *BHT.saci for tangential RFs, stack_* for stacked RFs，* SHR and *SHZ for the Z and R components of seismic waveform data used for calculating CRF. (Standard SAC format, can be read directly using sac, Obspy, MATLAB, et al.) |
| URL | http://www.geophys.ac.cn/ArticleData/20241029RFs_for_CAOB.zip |
| DOI | 10.12197/2024GA022 |
| Source | |
| Language | eng |
| Relation | |
| Coverage | |
| Rights | Institute of Geology and Geophysics, Chinese Academy of Sciences |