WDC for Geophysics, Beijing(中国地球物理学科中心)

Author-submitted data information

ID 309
Title Seismic waveforms and P-wave receiver function data from the study of seismic anisotropy and mantle flow in central Myanmar
Creator Enbo Fan
Subject Three-component waveforms and P-wave receiver function waveforms
Publisher Xiukuan Zhao
Description To gain insights into the previously poorly-understood mantle dynamics and deformation characteristics of the plate boundary system beneath central Myanmar, we apply the shear wave splitting technique to both XKS and local S-waves, and combine the splitting measurements with observations of crustal anisotropy using P‐to‐S conversions at the Moho, to investigate the spatial distribution of anisotropy using seismic data collected from 71 broadband stations under the China-Myanmar Geophysical Survey in the Myanmar Orogen (CMGSMO) project between 06/2016 and 01/2018 (http://www.seislab.cn/shownews.asp?column_id=310). For splitting analysis using PKS, SKKS, and PKS phases, we obtained a total of 678 pairs of Quality A or B XKS parameters from 82 events.
The three-component waveforms are stored with a sampling rate of 20 Hz. XKS and local S time window used to compute the splitting parameters was initially set between A(AMARKER) and F(FMARKER). The receiver function data with sampling rate of 20 Hz were cut within the time window. A bandpass filter of 1.25-12.5 seconds was applied.
The three-component waveforms files are stored in the directories as: ~/ Teleseismic/ phase/ EQYYDDDHHMM/ station.z (e.g., ~/ Teleseismic/ SKS/ EQ161921344/ M40xxx_MM.z). For splitting analysis using S-waves, we obtained 20 pairs of well-defined SWS parameters from 9 events with a focal depth ranging from 50 to 160 km. The three-component waveforms files are stored in the directories as: ~/ LocalS/ EQYYDDDHHMM/ station.z (e.g., ~/ LocalS/ EQ161950354/ N05xxx_UM.z). For receiver functions analysis at stations M09 or N16, the receiver functions files are stored in the directories as: ~/RFs/station/stationYYDDDHHMM.eqr (e.g., ~/RFs/M09xxx_MM161731712.eqr).
Earthquake information can be found on the USGS website
https://earthquake.usgs.gov/earthquakes/search/. A list of local earthquakes can be found under ~/LocalS/catalog.txt.
Contributor Enbo Fan, Yumei He, Yinshuang Ai, Stephen S. Gao, Kelly H. Liu, Mingming Jiang, Guangbing Hou, Chit Thet Mon, Myo Thant, and Kyaing Sein
Date June 2016 - January 2018
Type *.z, *.n, *.e components for shear wave splitting analysis and *.eqr for P-RFs are stored in SAC format. These standard SAC format files can be read directly using SAC, ObsPy, MATLAB, et al. Necessary information, such as locations of the station (STLA: latitude; STLO: longitude) and earthquake (EVLA, EVLO, EVDP), sampling rate (DELTA), number of sampling points (NTPS), has been stored in the head list of each file.
Format SAC format can be read directly using SAC, ObsPy, MATLAB, et al.
URL http://www.geophys.ac.cn/ArticleData/20210903SeismicDataByFan.zip
DOI 10.12197/2021GA010
Language eng
Rights Institute of Geology and Geophysics, Chinese Academy of Sciences